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: 856 [Rate centres in NPA 856] [Dial plan for NPA 856]

NXX: 577

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
856-577 A Collingswood NJ CMDNNJCECM2  6664 SPRINT SPECTRUM, L.P. 222      
856-577 0 Collingswood NJ CMDNNJCECM2  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 222      
856-577 1 Collingswood NJ CMDNNJCECM2  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 222      
856-577 2 Collingswood NJ CMDNNJCECM2  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 222      
856-577 3 Collingswood NJ CMDNNJCECM2  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 222      
856-577 4 Collingswood NJ CMDNNJCECM2  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 222      
856-577 5 Collingswood NJ CMDNNJCECM2  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 222      
856-577 6 Collingswood NJ CMDNNJCECM2  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 222      
856-577 7 Collingswood NJ CMDNNJCECM2  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 222      
856-577 8 Collingswood NJ CMDNNJCECM2  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 222      
856-577 9 Collingswood NJ CMDNNJCECM2  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 222      

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.