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.

NPA: 650 [Rate centres in NPA 650] [Dial plan for NPA 650]

NXX: 544

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
650-544 A San Mateo CA   6529 T-MOBILE USA, INC. 722      
650-544 0 San Mateo CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
650-544 1 San Mateo CA   5562 METROPCS, INC. 722      
650-544 2 San Mateo CA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
650-544 3 San Mateo CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
650-544 4 San Mateo CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
650-544 5 San Mateo CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
650-544 6 San Mateo CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
650-544 7 San Mateo CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
650-544 8 San Mateo CA   5562 METROPCS, INC. 722      
650-544 9 San Mateo CA   5562 METROPCS, INC. 722      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.