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: GTBGMDGBPS0

Remotes:

Switch Switch name Switch type
CHCHMDBERP0    RP 

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
240-276 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
240-276 0 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236   2004-06-25   
240-276 1 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236   2004-06-25   
240-276 2 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236   2004-06-25   
240-276 3 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236   2004-06-25   
240-276 4 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236   2004-06-25   
240-276 5 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236   2004-06-25   
240-386 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
240-386 2 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
240-386 3 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
240-386 4 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
240-386 5 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
240-386 6 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
240-631 A Gaithersburg MD 9212 VERIZON MARYLAND, INC. 236      
240-632 A Gaithersburg MD 9212 VERIZON MARYLAND, INC. 236      
240-683 A Gaithersburg MD 9212 VERIZON MARYLAND, INC. 236      
301-208 A Gaithersburg MD 9212 VERIZON MARYLAND, INC. 236      
301-212 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-212 1 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-212 2 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-212 3 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-212 4 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-212 5 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-212 6 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-212 7 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-212 8 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-212 9 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-216 A Gaithersburg MD 9212 VERIZON MARYLAND, INC. 236      
301-240 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-258 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-330 A Gaithersburg MD 9212 VERIZON MARYLAND, INC. 236      
301-355 A Gaithersburg MD 9212 VERIZON MARYLAND, INC. 236      
301-355 5 Gaithersburg MD 9212 VERIZON MARYLAND, INC. 236   2007-09-04   
301-355 6 Gaithersburg MD 9212 VERIZON MARYLAND, INC. 236   2007-09-04   
301-355 7 Gaithersburg MD 9212 VERIZON MARYLAND, INC. 236   2007-09-04   
301-407 4 Gaithersburg MD 9212 VERIZON MARYLAND, INC. 236   2003-05-10   
301-417 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-417 0 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-417 1 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-417 2 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-417 6 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-417 7 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-417 9 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-444 7 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236   2004-06-10   
301-519 A Gaithersburg MD 9212 VERIZON MARYLAND, INC. 236      
301-527 A Gaithersburg MD 9212 VERIZON MARYLAND, INC. 236      
301-548 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-590 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-590 0 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-590 1 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      

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Last updated: Sun, 07 Feb 2021 01:52:50 UTC

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