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: 442 [Rate centres in NPA 442] [Dial plan for NPA 442]

NXX: 515

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
442-515 A San Marcos CA SNDGCA0255Z  073H TELNYX LLC 732      
442-515 0 San Marcos CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732      
442-515 1 San Marcos CA SNDGCA0255Z  073H TELNYX LLC 732      
442-515 2 San Marcos CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732      
442-515 3 San Marcos CA SNDGCA0268Z  318J COMCAST IP PHONE, LLC 732      
442-515 4 San Marcos CA SNDACAGLDS2  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 732      
442-515 5 San Marcos CA ESCNCAKYGT0  6529 T-MOBILE USA, INC. 732      
442-515 6 San Marcos CA SNDGCA02XSZ  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 732      
442-515 7 San Marcos CA ESCNCAKYGT0  6529 T-MOBILE USA, INC. 732      
442-515 8 San Marcos CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732      
442-515 9 San Marcos CA ESCNCAKYGT0  6529 T-MOBILE USA, INC. 732      

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.