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: PARLMDPADS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
301-970 A Washington Zone 14 (Baltimore LATA) MD 9212 VERIZON MARYLAND, INC. 238      
301-970 2 Washington Zone 14 (Baltimore LATA) MD 9212 VERIZON MARYLAND, INC. 238      
301-970 5 Washington Zone 14 (Baltimore LATA) MD 9212 VERIZON MARYLAND, INC. 238      
410-224 A Annapolis MD 9212 VERIZON MARYLAND, INC. 238      
410-266 A Annapolis MD 9212 VERIZON MARYLAND, INC. 238      
410-571 A Annapolis MD 9212 VERIZON MARYLAND, INC. 238      
410-571 0 Annapolis MD 9212 VERIZON MARYLAND, INC. 238      
410-571 1 Annapolis MD 9212 VERIZON MARYLAND, INC. 238      
410-571 2 Annapolis MD 9212 VERIZON MARYLAND, INC. 238      
410-571 6 Annapolis MD 9212 VERIZON MARYLAND, INC. 238      
410-571 7 Annapolis MD 9212 VERIZON MARYLAND, INC. 238      
410-571 8 Annapolis MD 9212 VERIZON MARYLAND, INC. 238      
410-571 9 Annapolis MD 9212 VERIZON MARYLAND, INC. 238      
410-573 A Annapolis MD 9212 VERIZON MARYLAND, INC. 238      
410-841 A Severna Park MD 9212 VERIZON MARYLAND, INC. 238      
410-841 1 Severna Park MD 9212 VERIZON MARYLAND, INC. 238      
410-841 2 Severna Park MD 9212 VERIZON MARYLAND, INC. 238      
410-841 3 Severna Park MD 9212 VERIZON MARYLAND, INC. 238      
410-841 5 Severna Park MD 9212 VERIZON MARYLAND, INC. 238      
410-841 6 Severna Park MD 9212 VERIZON MARYLAND, INC. 238      
410-841 7 Severna Park MD 9212 VERIZON MARYLAND, INC. 238      
410-849 A Sherwood Forest MD 9212 VERIZON MARYLAND, INC. 238      
410-849 2 Sherwood Forest MD 9212 VERIZON MARYLAND, INC. 238      
410-849 3 Sherwood Forest MD 9212 VERIZON MARYLAND, INC. 238      
410-849 5 Sherwood Forest MD 9212 VERIZON MARYLAND, INC. 238      
410-849 8 Sherwood Forest MD 9212 VERIZON MARYLAND, INC. 238      
410-897 A Annapolis MD 9212 VERIZON MARYLAND, INC. 238      
410-897 0 Annapolis MD 9212 VERIZON MARYLAND, INC. 238      
410-897 1 Annapolis MD 9212 VERIZON MARYLAND, INC. 238      
410-897 3 Annapolis MD 9212 VERIZON MARYLAND, INC. 238      
410-897 4 Annapolis MD 9212 VERIZON MARYLAND, INC. 238      
410-897 5 Annapolis MD 9212 VERIZON MARYLAND, INC. 238      
410-897 6 Annapolis MD 9212 VERIZON MARYLAND, INC. 238      
410-897 8 Annapolis MD 9212 VERIZON MARYLAND, INC. 238      
410-897 9 Annapolis MD 9212 VERIZON MARYLAND, INC. 238      
410-946 A Severna Park MD 9212 VERIZON MARYLAND, INC. 238      
410-946 3 Severna Park MD 9212 VERIZON MARYLAND, INC. 238      
410-946 5 Severna Park MD 9212 VERIZON MARYLAND, INC. 238      

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.