Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 956 [Rate centres in NPA 956] [Dial plan for NPA 956]

NXX: 761

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
956-761 A Port Isabel TX PTISTXSPRS0  9533 SOUTHWESTERN BELL 568      
956-761 0 Port Isabel TX PTISTXSPRS0  9533 SOUTHWESTERN BELL 568      
956-761 1 Port Isabel TX PTISTXSPRS0  9533 SOUTHWESTERN BELL 568      
956-761 2 Port Isabel TX PTISTXSPRS0  9533 SOUTHWESTERN BELL 568      
956-761 3 Port Isabel TX PTISTXSPRS0  9533 SOUTHWESTERN BELL 568      
956-761 4 Port Isabel TX PTISTXSPRS0  9533 SOUTHWESTERN BELL 568      
956-761 5 Port Isabel TX PTISTXSPRS0  9533 SOUTHWESTERN BELL 568      
956-761 6 Port Isabel TX PTISTXSPRS0  9533 SOUTHWESTERN BELL 568      
956-761 7 Port Isabel TX PTISTXSPRS0  9533 SOUTHWESTERN BELL 568      
956-761 8 Port Isabel TX PTISTXSPRS0  9533 SOUTHWESTERN BELL 568      
956-761 9 Port Isabel TX   515J IP HORIZON LLC 568   2025-05-04   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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