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Duncan, OK

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
580-251 A DNCNOKMADS0  9533 SOUTHWESTERN BELL 536      
580-251 0   5813 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 536      
580-251 1   5813 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 536      
580-251 2   9533 SOUTHWESTERN BELL 536      
580-251 3   9533 SOUTHWESTERN BELL 536      
580-251 4   9533 SOUTHWESTERN BELL 536      
580-251 5   9533 SOUTHWESTERN BELL 536      
580-251 6   9533 SOUTHWESTERN BELL 536   2016-09-06   
580-251 7   9533 SOUTHWESTERN BELL 536      
580-251 8   9533 SOUTHWESTERN BELL 536      
580-251 9   9533 SOUTHWESTERN BELL 536      
580-252 A DNCNOKMADS0  9533 SOUTHWESTERN BELL 536      
580-252 0   9533 SOUTHWESTERN BELL 536      
580-252 1   9533 SOUTHWESTERN BELL 536      
580-252 2   9533 SOUTHWESTERN BELL 536      
580-252 3   9533 SOUTHWESTERN BELL 536      
580-252 4   9533 SOUTHWESTERN BELL 536      
580-252 5   9533 SOUTHWESTERN BELL 536      
580-252 6   9533 SOUTHWESTERN BELL 536      
580-252 7   145J TERRA NOVA TELECOM INC. 536   2023-11-15   
580-252 8   9533 SOUTHWESTERN BELL 536      
580-252 9   9533 SOUTHWESTERN BELL 536      
580-255 A DNCNOKMADS0  9533 SOUTHWESTERN BELL 536      
580-467 A ENIDOKKI0MD  6272 UNITED STATES CELLULAR - OK 536      
580-467 0   6272 UNITED STATES CELLULAR - OK 536      
580-467 1   6272 UNITED STATES CELLULAR - OK 536      
580-467 2   6272 UNITED STATES CELLULAR - OK 536      
580-467 3   6272 UNITED STATES CELLULAR - OK 536      
580-467 4   6272 UNITED STATES CELLULAR - OK 536      
580-467 5   6272 UNITED STATES CELLULAR - OK 536      
580-467 6   6272 UNITED STATES CELLULAR - OK 536      
580-467 7   6272 UNITED STATES CELLULAR - OK 536      
580-467 8   6272 UNITED STATES CELLULAR - OK 536      
580-467 9   258F WICHITA ONLINE, INC. - OK 536   2014-12-18   
580-470 A DNCNOKMADS0  9533 SOUTHWESTERN BELL 536      
580-470 0   9533 SOUTHWESTERN BELL 536      
580-470 1   9533 SOUTHWESTERN BELL 536      
580-470 2   9533 SOUTHWESTERN BELL 536      
580-470 3   9533 SOUTHWESTERN BELL 536      
580-470 4   9533 SOUTHWESTERN BELL 536      
580-470 5   5813 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 536      
580-470 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 536   2016-08-19   
580-470 7   9533 SOUTHWESTERN BELL 536      
580-470 8   9533 SOUTHWESTERN BELL 536      
580-470 9   9533 SOUTHWESTERN BELL 536      
580-475 A DNCNOKMADS0  9533 SOUTHWESTERN BELL 536      
580-475 0   9533 SOUTHWESTERN BELL 536      
580-475 1   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 536   2014-05-29   
580-475 2   5813 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 536   2007-03-30   
580-475 3   9533 SOUTHWESTERN BELL 536      

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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