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: 240 [Rate centres in NPA 240] [Dial plan for NPA 240]

NXX: 222

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-222 A Waldorf MD HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-222 0 Waldorf MD BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-09-02   
240-222 1 Waldorf MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-08-09   
240-222 2 Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2005-06-02   
240-222 3 Waldorf MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2005-07-25   
240-222 4 Waldorf MD HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-222 5 Waldorf MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-08-09   
240-222 6 Waldorf MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-06-11   
240-222 7 Waldorf MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-06-11   
240-222 8 Waldorf MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-06-11   
240-222 9 Waldorf MD HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.