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: 577

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
650-577 A San Mateo CA SNMTCA11DS1  9740 PACIFIC BELL 722      
650-577 0 San Mateo CA SNMTCA11DS1  9740 PACIFIC BELL 722      
650-577 1 San Mateo CA SNMTCA11DS1  9740 PACIFIC BELL 722      
650-577 2 San Mateo CA SNMTCA11DS1  9740 PACIFIC BELL 722      
650-577 3 San Mateo CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722   2008-12-08   
650-577 4 San Mateo CA SNMTCA11DS1  9740 PACIFIC BELL 722      
650-577 5 San Mateo CA SNMTCA11DS1  9740 PACIFIC BELL 722      
650-577 6 San Mateo CA SNMTCA11DS1  9740 PACIFIC BELL 722      
650-577 7 San Mateo CA SNMTCA11DS1  9740 PACIFIC BELL 722      
650-577 8 San Mateo CA SNMTCA11DS1  9740 PACIFIC BELL 722      
650-577 9 San Mateo CA SNMTCA11DS1  9740 PACIFIC BELL 722      

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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