Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: SNMTCA11DS1

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
650-341 A San Mateo CA 9740 PACIFIC BELL 722      
650-345 A San Mateo CA 9740 PACIFIC BELL 722      
650-349 A San Mateo CA 9740 PACIFIC BELL 722      
650-356 A San Mateo CA 9740 PACIFIC BELL 722      
650-356 0 San Mateo CA 9740 PACIFIC BELL 722      
650-356 1 San Mateo CA 9740 PACIFIC BELL 722      
650-356 2 San Mateo CA 9740 PACIFIC BELL 722      
650-356 3 San Mateo CA 9740 PACIFIC BELL 722      
650-356 4 San Mateo CA 9740 PACIFIC BELL 722      
650-356 5 San Mateo CA 9740 PACIFIC BELL 722      
650-356 6 San Mateo CA 9740 PACIFIC BELL 722      
650-356 7 San Mateo CA 9740 PACIFIC BELL 722      
650-356 9 San Mateo CA 9740 PACIFIC BELL 722      
650-357 A San Mateo CA 9740 PACIFIC BELL 722      
650-358 A San Mateo CA 9740 PACIFIC BELL 722      
650-372 A San Mateo CA 9740 PACIFIC BELL 722      
650-372 0 San Mateo CA 9740 PACIFIC BELL 722      
650-372 1 San Mateo CA 9740 PACIFIC BELL 722      
650-372 2 San Mateo CA 9740 PACIFIC BELL 722      
650-372 3 San Mateo CA 9740 PACIFIC BELL 722      
650-372 4 San Mateo CA 9740 PACIFIC BELL 722      
650-372 6 San Mateo CA 9740 PACIFIC BELL 722      
650-372 7 San Mateo CA 9740 PACIFIC BELL 722      
650-372 9 San Mateo CA 9740 PACIFIC BELL 722      
650-377 A San Mateo CA 9740 PACIFIC BELL 722      
650-377 0 San Mateo CA 9740 PACIFIC BELL 722      
650-377 1 San Mateo CA 9740 PACIFIC BELL 722      
650-377 2 San Mateo CA 9740 PACIFIC BELL 722      
650-377 3 San Mateo CA 9740 PACIFIC BELL 722      
650-377 4 San Mateo CA 9740 PACIFIC BELL 722      
650-377 5 San Mateo CA 9740 PACIFIC BELL 722      
650-378 A San Mateo CA 9740 PACIFIC BELL 722      
650-522 A San Mateo CA 9740 PACIFIC BELL 722      
650-522 1 San Mateo CA 9740 PACIFIC BELL 722      
650-522 2 San Mateo CA 9740 PACIFIC BELL 722      
650-522 4 San Mateo CA 9740 PACIFIC BELL 722      
650-522 5 San Mateo CA 9740 PACIFIC BELL 722      
650-522 6 San Mateo CA 9740 PACIFIC BELL 722      
650-522 7 San Mateo CA 9740 PACIFIC BELL 722      
650-522 8 San Mateo CA 9740 PACIFIC BELL 722      
650-522 9 San Mateo CA 9740 PACIFIC BELL 722      
650-524 A San Mateo CA 9740 PACIFIC BELL 722      
650-524 0 San Mateo CA 9740 PACIFIC BELL 722      
650-524 1 San Mateo CA 9740 PACIFIC BELL 722      
650-524 2 San Mateo CA 9740 PACIFIC BELL 722      
650-524 3 San Mateo CA 9740 PACIFIC BELL 722      
650-524 4 San Mateo CA 9740 PACIFIC BELL 722      
650-524 6 San Mateo CA 9740 PACIFIC BELL 722      
650-524 7 San Mateo CA 9740 PACIFIC BELL 722      
650-524 8 San Mateo CA 9740 PACIFIC BELL 722      

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Last updated: Thu, 04 Aug 2022 23:14:42 UTC

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