Customers whose combined amounts of accounts receivable and contract assets, net, exceeded 10% of total combined accounts receivable and contract assets, net as of July 26, 2025 or January 25, 2025 were as follows (dollars in millions):


	July 26, 2025			January 25, 2025
	Amount		% of Total	Amount		% of Total
AT&T Inc.	$	201.0	12.3%	$	127.7	9.4%
Charter Communications	$	234.0	14.3%	$	158.9	11.7%
Lumen Technologies	$	255.4	15.6%	$	287.1	21.1%

Our customer base is highly concentrated. Customers whose contract revenues exceeded 10% of total contract revenues during the three and six months ended July 26, 2025 or July 27, 2024, as well as total contract revenues from all other customers combined, were as follows (dollars in millions):


	For the Three Months Ended						For the Six Months Ended
	July 26, 2025			July 27, 2024			July 26, 2025			July 27, 2024
	Amount		% of Total	Amount		% of Total	Amount		% of Total	Amount		% of Total
AT&T Inc.	$	373.0	27.1%	$	210.2	17.5%	$	698.1	26.5%	$	425.7	18.2%
Lumen Technologies	155.4		11.3	163.7		13.6	280.6		10.6	320.5		13.7

Total other customers combined	849.5		61.6	829.2		68.9	1,657.9		62.9	1,599.3		68.1
Total contract revenues	$	1,377.9	100.0%	$	1,203.1	100.0%	$	2,636.6	100.0%	$	2,345.5	100.0%

Total contract revenues by customer type during the three and six months ended July 26, 2025 and July 27, 2024 were as follows (dollars in millions):


	For the Three Months Ended						For the Six Months Ended
	July 26, 2025			July 27, 2024			July 26, 2025			July 27, 2024
	Amount		% of Total	Amount		% of Total	Amount		% of Total	Amount		% of Total
Telecommunications	$	1,269.1	92.1%	$	1,086.2	90.3%	$	2,418.0	91.7%	$	2,113.0	90.0%
Underground facility locating	84.1		6.1	82.1		6.8	166.4		6.3	163.1		7.0
Electrical and gas utilities and other	24.7		1.8	34.8		2.9	52.2		2.0	69.4		3.0
Total contract revenues	$	1,377.9	100.0%	$	1,203.1	100.0%	$	2,636.6	100.0%	$	2,345.5	100.0%