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: 7421 AT&T LOCAL

<< 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 82 83 84 85 86 87 88 89 90 91 92 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
973-820 A Newark NJ MRTWNJMRNMD  224      
973-820 0 Newark NJ MRTWNJMRNMD  224      
973-820 2 Newark NJ MRTWNJMRNMD  224      
973-820 9 Newark NJ MRTWNJMRNMD  224      
978-226 2 Tyngsboro MA FRMNMAWAGMD  128   2002-03-11   
978-230 4 Leominster MA FRMNMAWAEMD  128   2002-11-25   
978-261 A Sudbury MA FRMNMAWADS0  128      
978-261 9 Sudbury MA FRMNMAWADS0  128      
978-272 5 Groton MA FRMNMAWADS0  128   2006-07-08   
978-357 4 North Reading MA FRMNMAWARMD  128   2003-11-30   
978-399 7 Westford MA FRMNMAWAGMD  128      
978-412 3 Ipswich MA FRMNMAWARMD  128   2003-12-17   
978-449 2 Groton MA FRMNMAWADS0  128      
978-449 3 Groton MA FRMNMAWADS0  128      
978-489 A Acton MA FRMNMAWADS0  128      
978-489 0 Acton MA FRMNMAWADS0  128      
978-489 1 Acton MA FRMNMAWADS0  128      
978-489 2 Acton MA FRMNMAWADS0  128      
978-491 4 Gloucester MA CMBRMA01DS4  128   2003-11-30   
978-494 A Andover MA FRMNMAWAGMD  128      
978-494 1 Andover MA FRMNMAWAGMD  128      
978-495 A Billerica MA FRMNMAWAGMD  128      
978-495 9 Billerica MA FRMNMAWAGMD  128      
978-522 A Beverly MA FRMNMAWAGMD  128      
978-522 2 Beverly MA FRMNMAWAGMD  128      
978-522 7 Beverly MA FRMNMAWAGMD  128      
978-522 9 Beverly MA FRMNMAWAGMD  128      
978-541 A Athol MA WRCSMACEWMD  128      
978-541 9 Athol MA WRCSMACEWMD  128   2012-08-09   
978-548 A Peabody MA FRMNMAWA4MD  128      
978-548 3 Peabody MA FRMNMAWA4MD  128      
978-598 4 Clinton MA FRMNMAWADS0  128   2003-11-30   
978-637 A Maynard MA FRMNMAWADS1  128      
978-637 9 Maynard MA FRMNMAWADS1  128      
978-645 A Lawrence MA FRMNMAWAGMD  128      
978-645 3 Lawrence MA FRMNMAWAGMD  128      
978-645 4 Lawrence MA FRMNMAWAGMD  128      
978-645 5 Lawrence MA FRMNMAWAGMD  128      
978-677 A Lowell MA FRMNMAWAGMD  128      
978-677 3 Lowell MA FRMNMAWAGMD  128      
978-677 5 Lowell MA FRMNMAWAGMD  128      
978-723 A Maynard MA FRMNMAWADS0  128      
978-723 2 Maynard MA FRMNMAWADS0  128      
978-731 3 Westminster MA FRMNMAWAEMD  128      
978-731 4 Westminster MA FRMNMAWAEMD  128      
978-731 5 Westminster MA FRMNMAWAEMD  128      
978-731 6 Westminster MA FRMNMAWAEMD  128      
978-731 7 Westminster MA FRMNMAWAEMD  128      
978-731 8 Westminster MA FRMNMAWAEMD  128      
978-753 A Wilmington MA FRMNMAWARMD  128      

<< 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 82 83 84 85 86 87 88 89 90 91 92 >>

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.