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: 267 [Rate centres in NPA 267] [Dial plan for NPA 267]

NXX: 552

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
267-552 A Philadelphia Suburban Zone 42 PA   4007 LEVEL 3 COMMUNICATIONS, LLC - PA 228   2025-04-05   
267-552 3 Philadelphia Suburban Zone 42 PA PHLAPAFGD0S  4007 LEVEL 3 COMMUNICATIONS, LLC - PA 228      
267-552 4 Philadelphia Suburban Zone 42 PA PHLAPAFGD2S  547E ONVOY, LLC - PA 228   2023-06-24   
267-552 5 Philadelphia Suburban Zone 42 PA   3806 CORE COMMUNICATIONS, INC. - PA 228   2018-06-04   
267-552 6 Philadelphia Suburban Zone 42 PA PHLAPAMKXSX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 228   2006-09-14   
267-552 7 Philadelphia Suburban Zone 42 PA   3806 CORE COMMUNICATIONS, INC. - PA 228   2018-06-04   
267-552 8 Philadelphia Suburban Zone 42 PA PHLAPAFGXCX  073H TELNYX LLC 228   2017-06-21   
267-552 9 Philadelphia Suburban Zone 42 PA   515J IP HORIZON LLC 228   2016-05-21   

Last updated: Sat, 04 Jul 2026 13:07:56 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.