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Customer Concentration and Revenue Information (Tables)
 3 Months Ended
Apr. 29, 2023
Risks and Uncertainties [Abstract]  
Schedule that Represents A Significant Portion of the Company’s Customer Base and Each Over 10% of Total Revenue
Customers whose combined amounts of accounts receivable and contract assets, net, exceeded 10% of total combined accounts receivable and contract assets, net, as of April 29, 2023 or January 28, 2023 were as follows (dollars in millions):

April 29, 2023January 28, 2023
Amount% of TotalAmount% of Total
Lumen Technologies$245.8 20.1%$189.3 17.4%
Frontier Communications Corporation$192.1 15.7%$153.2 14.0%
AT&T Inc.$135.0 11.0%$136.2 12.5%
Comcast Corporation$122.5 10.0%$125.2 11.5%
Customers whose contract revenues exceeded 10% of total contract revenues during the three months ended April 29, 2023 or April 30, 2022, as well as total contract revenues from all other customers combined, were as follows (dollars in millions):
For the Three Months Ended
April 29, 2023April 30, 2022
Amount% of TotalAmount% of Total
AT&T Inc.$224.4 21.5%$237.4 27.1%
Lumen Technologies136.4 13.0102.8 11.7
Comcast Corporation120.6 11.5111.3 12.7
Total other customers combined564.1 54.0424.848.5
Total contract revenues$1,045.5 100.0%$876.3 100.0%
Total contract revenues by customer type during the three months ended April 29, 2023 and April 30, 2022 were as follows (dollars in millions):
For the Three Months Ended
April 29, 2023April 30, 2022
Amount% of TotalAmount% of Total
Telecommunications$938.2 89.7%$778.9 88.9%
Underground facility locating73.0 7.070.9 8.1
Electrical and gas utilities and other34.3 3.326.5 3.0
Total contract revenues$1,045.5 100.0%$876.3 100.0%