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.

OCN: 9212 VERIZON MARYLAND, INC.

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
667-233 7 Baltimore MD   238   2015-03-15   
667-233 8 Baltimore MD   238   2015-03-15   
667-233 9 Baltimore MD   238   2015-03-15   
667-812 A Waterloo (Washington DC LATA) MD LARLMDDYDS0  236      
667-812 0 Waterloo (Washington DC LATA) MD   236   2015-10-10   
667-812 1 Waterloo (Washington DC LATA) MD   236   2015-10-10   
667-812 2 Waterloo (Washington DC LATA) MD   236   2015-10-10   
667-812 3 Waterloo (Washington DC LATA) MD   236   2015-10-10   
667-812 4 Waterloo (Washington DC LATA) MD   236   2015-10-10   
667-812 5 Waterloo (Washington DC LATA) MD   236   2015-10-10   
667-812 6 Waterloo (Washington DC LATA) MD   236   2015-10-10   
667-812 7 Waterloo (Washington DC LATA) MD   236   2015-10-10   
667-812 8 Waterloo (Washington DC LATA) MD   236   2015-10-10   
667-812 9 Waterloo (Washington DC LATA) MD   236   2015-10-10   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81

Last updated: Sun, 28 Feb 2021 19:06:05 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.