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.

Switch: BLTOMDXIDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
443-218 A Worthington MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-266 A Glenwood MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-291 A Hampstead MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-293 A Westminster MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-294 A West River MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-296 A Waterloo MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-299 A Fallston MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-302 A Crofton MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-303 A Aberdeen MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 236      
443-304 A Arbutus MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-305 A Armiger-Gibson Island MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-307 A Bel Air MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-312 A Brooklyn Park-Linthicum MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-313 A Fork MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-315 A Catonsville MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-316 A Woodlawn MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-317 A Chase MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-320 A Baltimore MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-390 A Churchville MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-391 A Cockeysville MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-393 A Columbia MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-396 A Odenton MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-399 A Dundalk MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-405 A Randallstown MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-420 A Ellicott City MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-490 A Edgewood MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-491 A Parkton MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-492 A Elkridge MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-494 A Millersville MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-495 A Parkville MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-499 A Jarrettsville MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-501 A Pikesville MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-505 A Essex MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-516 A Sykesville MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-517 A Glen Burnie MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-519 A Towson MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-590 A Reisterstown MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-594 A Sparrows Point MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-595 A Sparks-Glencoe MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-597 A Severna Park MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-598 A Sherwood Forest MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-599 A Severn MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-951 A Annapolis MD 6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.