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: 577

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-577 A Elkton MD BLTQMD01AMD  965H FRACTEL, LLC 238      
667-577 0 Elkton MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2021-01-09   
667-577 1 Elkton MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2021-01-09   
667-577 2 Elkton MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2021-10-07   
667-577 3 Elkton MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2021-10-07   
667-577 4 Elkton MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2023-08-10   
667-577 6 Elkton MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-03-04   
667-577 7 Elkton MD BLTQMD01AMD  965H FRACTEL, LLC 238   2020-09-12   
667-577 8 Elkton MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-03-04   
667-577 9 Elkton MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-03-04   

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.