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: 667 [Rate centres in NPA 667] [Dial plan for NPA 667]

NXX: 661

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-661 A Snow Hill MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242      
667-661 0 Snow Hill MD SLBRMDSBXUX  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 242   2024-09-19   
667-661 2 Snow Hill MD SLBRMDSBXLX  318J COMCAST IP PHONE, LLC 242   2023-04-01   
667-661 3 Snow Hill MD SLBRMDSBX0X  624H ONVOY SPECTRUM, LLC 242   2022-03-13   
667-661 4 Snow Hill MD SLBRMDSBX0X  624H ONVOY SPECTRUM, LLC 242   2022-03-13   
667-661 5 Snow Hill MD SLBRMDSBX0X  624H ONVOY SPECTRUM, LLC 242   2021-05-27   
667-661 6 Snow Hill MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2019-12-11   
667-661 7 Snow Hill MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2019-12-11   
667-661 8 Snow Hill MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2021-07-12   
667-661 9 Snow Hill MD SLBRMDSBXFX  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 242   2022-04-15   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.