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: 301 [Rate centres in NPA 301] [Dial plan for NPA 301]

NXX:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-708 A Laurel (Baltimore LATA) MD HNVAMDBHRS0  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238   2011-11-17   
301-708 0 Laurel (Baltimore LATA) MD   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
301-708 1 Laurel (Baltimore LATA) MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-11-18   
301-708 2 Laurel (Baltimore LATA) MD   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
301-708 3 Laurel (Baltimore LATA) MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2020-09-12   
301-708 4 Laurel (Baltimore LATA) MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2014-09-01   
301-708 5 Laurel (Baltimore LATA) MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-12-16   
301-708 6 Laurel (Baltimore LATA) MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-12-16   
301-708 7 Laurel (Baltimore LATA) MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2014-09-01   
301-708 8 Laurel (Baltimore LATA) MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-11-18   
301-708 9 Laurel (Baltimore LATA) MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-11-18   

Last updated: Thu, 10 Sep 2020 02:15:24 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.