Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 650 [Rate centres in NPA 650] [Dial plan for NPA 650]

NXX: 638

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
650-638 A San Mateo CA SNMTCA11DS0  9740 PACIFIC BELL 722      
650-638 0 San Mateo CA SNMTCA11DS0  9740 PACIFIC BELL 722      
650-638 1 San Mateo CA SNMTCA11DS0  9740 PACIFIC BELL 722      
650-638 2 San Mateo CA SNMTCA11DS0  9740 PACIFIC BELL 722      
650-638 3 San Mateo CA SNMTCA11DS0  9740 PACIFIC BELL 722      
650-638 4 San Mateo CA SNMTCA11DS0  9740 PACIFIC BELL 722      
650-638 5 San Mateo CA SNMTCA11DS0  9740 PACIFIC BELL 722      
650-638 6 San Mateo CA SNMTCA11DS0  9740 PACIFIC BELL 722      
650-638 7 San Mateo CA SNMTCA11DS0  9740 PACIFIC BELL 722      
650-638 8 San Mateo CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2019-02-07   
650-638 9 San Mateo CA SNMTCA11DS0  9740 PACIFIC BELL 722      

Last updated: Sun, 28 Feb 2021 19:06:05 UTC

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