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  <xsd:element id="atni_ContractWithCustomerLiabilityCurrentCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress" name="ContractWithCustomerLiabilityCurrentCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <xsd:element id="atni_ContractWithCustomerLiabilityNonCurrentCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress" name="ContractWithCustomerLiabilityNonCurrentCumulativeCatchUpAdjustmentToRevenueChangeInMeasureOfProgress" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <xsd:element id="atni_PercentageOfChangeInContractWithCustomerLiabilityCurrent" name="PercentageOfChangeInContractWithCustomerLiabilityCurrent" nillable="true" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="atni_PercentageOfChangeInContractWithCustomerLiabilityNonCurrent" name="PercentageOfChangeInContractWithCustomerLiabilityNonCurrent" nillable="true" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="atni_AdvancePaymentsAndDepositsCurrent" name="AdvancePaymentsAndDepositsCurrent" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <xsd:element id="atni_TotalFinanceLeaseCost" name="TotalFinanceLeaseCost" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <xsd:element id="atni_TotalOperatingLeaseCost" name="TotalOperatingLeaseCost" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <xsd:element id="atni_ReceivableCreditFacilityMember" name="ReceivableCreditFacilityMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="atni_SeniorSecuredDelayedDrawTermLoanMember" name="SeniorSecuredDelayedDrawTermLoanMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="atni_CommunicationServicesMember" name="CommunicationServicesMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="atni_OtherRevenueMember" name="OtherRevenueMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="atni_MobilityMember" name="MobilityMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="atni_FixedMember" name="FixedMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="atni_CarrierServicesMember" name="CarrierServicesMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="atni_OtherCommunicationServicesMember" name="OtherCommunicationServicesMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="atni_ManagedServicesMember" name="ManagedServicesMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="atni_ConstructionServicesMember" name="ConstructionServicesMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="atni_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour" name="LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <xsd:element id="atni_AlaskaCommunicationsSystemsGroupInc.Member" name="AlaskaCommunicationsSystemsGroupInc.Member" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="atni_RuralDigitalOpportunityFundPhaseIAuctionMember" name="RuralDigitalOpportunityFundPhaseIAuctionMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="atni_CustomerReceivableCurrent" name="CustomerReceivableCurrent" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" />
  <xsd:element id="atni_CustomerReceivableNoncurrent" name="CustomerReceivableNoncurrent" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" />
  <xsd:element id="atni_CustomerReceivableCreditFacilityCurrentMaturities" name="CustomerReceivableCreditFacilityCurrentMaturities" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <xsd:element id="atni_CustomerReceivableCreditFacilityExcludingCurrentMaturities" name="CustomerReceivableCreditFacilityExcludingCurrentMaturities" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <xsd:element id="atni_IncreaseDecreaseInCustomerReceivable" name="IncreaseDecreaseInCustomerReceivable" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <xsd:element id="atni_ReimbursableCapitalExpenditures" name="ReimbursableCapitalExpenditures" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <xsd:element id="atni_CustomerReceivable" name="CustomerReceivable" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" />
  <xsd:element id="atni_FirstnetAgreementMember" name="FirstnetAgreementMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="atni_FinanceLeaseLiabilityToBePaidAfterYearFour" name="FinanceLeaseLiabilityToBePaidAfterYearFour" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <xsd:element id="atni_LeaseLiabilityCurrent" name="LeaseLiabilityCurrent" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <xsd:element id="atni_LeaseLiabilityNoncurrent" name="LeaseLiabilityNoncurrent" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <xsd:element id="atni_PercentageOfPerformanceObligationsToBeSatisfied" name="PercentageOfPerformanceObligationsToBeSatisfied" nillable="true" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="atni_AlaskaCreditFacilityMember" name="AlaskaCreditFacilityMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="atni_DebtInstrumentTrailingPeriodOfConsolidatedEBITD" name="DebtInstrumentTrailingPeriodOfConsolidatedEBITD" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="atni_DebtInstrumentMaximumConsolidatedNetTotalLeverageRatio" name="DebtInstrumentMaximumConsolidatedNetTotalLeverageRatio" nillable="true" type="xbrli:pureItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="atni_DebtInstrumentMinimumConsolidatedFixedChargeCoverageRatio" name="DebtInstrumentMinimumConsolidatedFixedChargeCoverageRatio" nillable="true" type="xbrli:pureItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="atni_AlaskaIncrementalTermLoanFacilityMember" name="AlaskaIncrementalTermLoanFacilityMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="atni_MobilityBusinessMember" name="MobilityBusinessMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="atni_MobilityConsumerMember" name="MobilityConsumerMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="atni_FixedBusinessMember" name="FixedBusinessMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="atni_FixedConsumerMember" name="FixedConsumerMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="atni_DeemedDividend" name="DeemedDividend" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <xsd:element id="atni_RedeemablePreferredUnitsMember" name="RedeemablePreferredUnitsMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="atni_RedeemableCommonUnitsMember" name="RedeemableCommonUnitsMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="atni_RedeemableEquityFairValueDisclosure" name="RedeemableEquityFairValueDisclosure" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <xsd:element id="atni_RedeemableCommonEquityMember" name="RedeemableCommonEquityMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="atni_ConnectAmericaFundPhaseIiProgramMember" name="ConnectAmericaFundPhaseIiProgramMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="atni_OtherProgramsMember" name="OtherProgramsMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="atni_TemporaryEquityDeemedDividend" name="TemporaryEquityDeemedDividend" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <xsd:element name="NetworkAssetMember" id="atni_NetworkAssetMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="LessorOperatingLeasePaymentToBeReceivedAfterYearFour" id="atni_LessorOperatingLeasePaymentToBeReceivedAfterYearFour" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="FinanceLeaseVariableCosts" id="atni_FinanceLeaseVariableCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="GrantFundsCumulativeAwards" id="atni_GrantFundsCumulativeAwards" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="AlloyIncMember" id="atni_AlloyIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="InvestmentWithoutReadilyDeterminableFairValueMember" id="atni_InvestmentWithoutReadilyDeterminableFairValueMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="InvestmentsRollForwardAbstract" id="atni_InvestmentsRollForwardAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="RemoveAndReplaceProgramMember" id="atni_RemoveAndReplaceProgramMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ReimbursementOfCostAmountAllocated" id="atni_ReimbursementOfCostAmountAllocated" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="UniversalServiceFundAndConnectAmericaFundPhaseTwoRuralDigitalOpportunitiesFundAndOtherMember" id="atni_UniversalServiceFundAndConnectAmericaFundPhaseTwoRuralDigitalOpportunitiesFundAndOtherMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ScheduleOfGrantFundsTableTextBlock" id="atni_ScheduleOfGrantFundsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="NetworkConnectivityForEligibleCommunitiesMember" id="atni_NetworkConnectivityForEligibleCommunitiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="SacredWindTermDebtMember" id="atni_SacredWindTermDebtMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="TelecomMember" id="atni_TelecomMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DividendsDeclaredNotYetPaid" id="atni_DividendsDeclaredNotYetPaid" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="ReimbursementReceivable" id="atni_ReimbursementReceivable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="LongTermDebtMaturityAfterYearFour" id="atni_LongTermDebtMaturityAfterYearFour" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="CustomerReceivableCreditFacilityMember" id="atni_CustomerReceivableCreditFacilityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DebtExcludingCustomerReceivableCreditFacilityMember" id="atni_DebtExcludingCustomerReceivableCreditFacilityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AmountsAccruedForNonReimbursableCapitalExpenditures" id="atni_AmountsAccruedForNonReimbursableCapitalExpenditures" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="TwoThousandTwentyThreeCobankCreditFacilityMember" id="atni_TwoThousandTwentyThreeCobankCreditFacilityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="TwoThousandTwentyThreeCobankRevolvingLoanMember" id="atni_TwoThousandTwentyThreeCobankRevolvingLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="TwoThousandTwentyThreeCobankTermLoanMember" id="atni_TwoThousandTwentyThreeCobankTermLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AmountAccruedForReimbursableCapitalExpendituresFromGovernmentCapitalPrograms" id="atni_AmountAccruedForReimbursableCapitalExpendituresFromGovernmentCapitalPrograms" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="DebtQuarterlyPaymentDecember312023June302025Member" id="atni_DebtQuarterlyPaymentDecember312023June302025Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DebtQuarterlyPaymentSeptember302025June302026Member" id="atni_DebtQuarterlyPaymentSeptember302025June302026Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DebtQuarterlyPaymentSeptember302026June302029Member" id="atni_DebtQuarterlyPaymentSeptember302026June302029Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="TribalBroadbandConnectivityProgramAndRuralDevelopmentBroadbandReconnectProgramMember" id="atni_TribalBroadbandConnectivityProgramAndRuralDevelopmentBroadbandReconnectProgramMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ReimbursementOfCostsIncurredPeriod" id="atni_ReimbursementOfCostsIncurredPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="RuralHealthCareMember" id="atni_RuralHealthCareMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="InterestRateSwapOneMember" id="atni_InterestRateSwapOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="InterestRateSwapTwoMember" id="atni_InterestRateSwapTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="EmployeeBenefitInvestmentsMember" id="atni_EmployeeBenefitInvestmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="GrantFundsSpentOnConstructionObligation" id="atni_GrantFundsSpentOnConstructionObligation" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="CapitalAmountMember" id="atni_CapitalAmountMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="OperatingAmountMember" id="atni_OperatingAmountMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="GovernmentGrantAmountSpentToDate" id="atni_GovernmentGrantAmountSpentToDate" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="GovernmentGrantAmountSpent" id="atni_GovernmentGrantAmountSpent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="GovernmentGrantTotalReimbursements" id="atni_GovernmentGrantTotalReimbursements" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="GovernmentGrantReimbursementsReceived" id="atni_GovernmentGrantReimbursementsReceived" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="IncreaseDecreaseInAccountsReceivableAndReplaceAndRemoveProgramReceivable" id="atni_IncreaseDecreaseInAccountsReceivableAndReplaceAndRemoveProgramReceivable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="EnhancedAlternativeConnectAmericaCostModelProgramEAcamMember" id="atni_EnhancedAlternativeConnectAmericaCostModelProgramEAcamMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="GrantReceivableInYear2038Member" id="atni_GrantReceivableInYear2038Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AlaskaCreditFacility2024Member" id="atni_AlaskaCreditFacility2024Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DebtInstrumentFromFourthQuarterOf2026ToThirdQuarter2027Member" id="atni_DebtInstrumentFromFourthQuarterOf2026ToThirdQuarter2027Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DebtInstrumentFromFourthQuarterOf2027ToSecondQuarter2029Member" id="atni_DebtInstrumentFromFourthQuarterOf2027ToSecondQuarter2029Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DebtInstrumentFromThirdQuarterOf2028Member" id="atni_DebtInstrumentFromThirdQuarterOf2028Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="GrantReceivableFromJanuary2025ThroughDecember2028Member" id="atni_GrantReceivableFromJanuary2025ThroughDecember2028Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AlaskaConnectFundMember" id="atni_AlaskaConnectFundMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="GrantsExpectedToBeReceivedPerYear" id="atni_GrantsExpectedToBeReceivedPerYear" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="GrantFundsAwardedAnnually" id="atni_GrantFundsAwardedAnnually" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="CostReimbursementAmountFunded" id="atni_CostReimbursementAmountFunded" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="UnrecognizedTaxBenefitsShortfallOfStockOption" id="atni_UnrecognizedTaxBenefitsShortfallOfStockOption" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="IdbCreditFacility2025Member" id="atni_IdbCreditFacility2025Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DebtQuarterlyPaymentJune222031ToDecember222034Member" id="atni_DebtQuarterlyPaymentJune222031ToDecember222034Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DebtQuarterlyPaymentJune222027ToDecember222030Member" id="atni_DebtQuarterlyPaymentJune222027ToDecember222030Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PrepaymentFeePercentage" id="atni_PrepaymentFeePercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ScenarioPeriodAfterSecondAnniversaryMember" id="atni_ScenarioPeriodAfterSecondAnniversaryMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="GovernmentSupportAgreementsMember" id="atni_GovernmentSupportAgreementsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="OtherGovernmentSupportProgramsMember" id="atni_OtherGovernmentSupportProgramsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="RestructuringConsultingCosts" id="atni_RestructuringConsultingCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="OneviDebtMember" id="atni_OneviDebtMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="IdbTermLoan2025Member" id="atni_IdbTermLoan2025Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AssetsClassifiedAsHeldForSale" id="atni_AssetsClassifiedAsHeldForSale" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="ConnectAmericaFundPhaseIiProgramAndAlaskaConnectFundMember" id="atni_ConnectAmericaFundPhaseIiProgramAndAlaskaConnectFundMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PaymentOnFirstToThirdYearMember" id="atni_PaymentOnFirstToThirdYearMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PaymentOnFourthToSixthYearMember" id="atni_PaymentOnFourthToSixthYearMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PaymentOnSeventhToEighthYearMember" id="atni_PaymentOnSeventhToEighthYearMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PaymentOnNinthYearMember" id="atni_PaymentOnNinthYearMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DebtInstrumentAnnualPrincipalPaymentPercentage" id="atni_DebtInstrumentAnnualPrincipalPaymentPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="ProceedsFromPrepaymentsByCustomers" id="atni_ProceedsFromPrepaymentsByCustomers" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="GovernmentAssistanceAdditionalPeriodRequested" id="atni_GovernmentAssistanceAdditionalPeriodRequested" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="TransactionAgreementWithEipHoldingsMember" id="atni_TransactionAgreementWithEipHoldingsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NumberOfTowerPortfoliosAgreedToSell" id="atni_NumberOfTowerPortfoliosAgreedToSell" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="TerminationFees" id="atni_TerminationFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="AggregateConsiderationForSaleMaximum" id="atni_AggregateConsiderationForSaleMaximum" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="Reorganization2026Member" id="atni_Reorganization2026Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="GrantReceivableThrough2029Member" id="atni_GrantReceivableThrough2029Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ScenarioPeriodEndingDecember2026Member" id="atni_ScenarioPeriodEndingDecember2026Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ScenarioPeriodEndingDecember2027Member" id="atni_ScenarioPeriodEndingDecember2027Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ScenarioPeriodEndingDecember2028Member" id="atni_ScenarioPeriodEndingDecember2028Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DebtInstrumentFromThirdQuarterOf2027Member" id="atni_DebtInstrumentFromThirdQuarterOf2027Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="LiabilitiesClassifiedAsHeldForSale" id="atni_LiabilitiesClassifiedAsHeldForSale" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="TowerPortfolioMember" id="atni_TowerPortfolioMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DisposalGroupIncludingDiscontinuedOperationOperatingLeaseRightOfUseAssetsNoncurrent" id="atni_DisposalGroupIncludingDiscontinuedOperationOperatingLeaseRightOfUseAssetsNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="DisposalGroupIncludingDiscontinuedOperationLeaseLiabilitiesCurrent" id="atni_DisposalGroupIncludingDiscontinuedOperationLeaseLiabilitiesCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="DisposalGroupIncludingDiscontinuedOperationLeaseLiabilitiesNoncurrent" id="atni_DisposalGroupIncludingDiscontinuedOperationLeaseLiabilitiesNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="DisposalGroupIncludingDiscontinuedOperationAssetsLiabilitiesNet" id="atni_DisposalGroupIncludingDiscontinuedOperationAssetsLiabilitiesNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="InitialClosingMember" id="atni_InitialClosingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="SubsequentClosingMember" id="atni_SubsequentClosingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DisposalGroupIncludingDiscontinuedOperationPostClosingPercentageOfPortfolioSites" id="atni_DisposalGroupIncludingDiscontinuedOperationPostClosingPercentageOfPortfolioSites" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EquityMethodInvestmentImpairmentAmount" id="atni_EquityMethodInvestmentImpairmentAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="IndiaSolarInvestmentMember" id="atni_IndiaSolarInvestmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="GovernmentGrantAmountReclassified" id="atni_GovernmentGrantAmountReclassified" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="CapitalExpendituresFromGovernmentCapitalProgramsNotProbable" id="atni_CapitalExpendituresFromGovernmentCapitalProgramsNotProbable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="TemporaryEquityHistoricalCostAmount" id="atni_TemporaryEquityHistoricalCostAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="ContingentConsiderationMember" id="atni_ContingentConsiderationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ScenarioPeriodUpToFirstAnniversaryMember" id="atni_ScenarioPeriodUpToFirstAnniversaryMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ScenarioPeriodUpToSecondAnniversaryMember" id="atni_ScenarioPeriodUpToSecondAnniversaryMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
</xsd:schema>
