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
920-637 9 Neenah WI   350      
920-638 A Fond du Lac WI WTJTWIAA1MD  356      
920-638 9 Fond du Lac WI   356      
920-695 A Sturgeon Bay WI GNBYWIATNMD  350      
920-695 9 Sturgeon Bay WI   350   2003-09-21   
925-234 7 Antioch CA   722   2003-02-02   
925-241 3 Dublin-San Ramon CA   722   2002-09-03   
925-272 3 Danville CA   722   2002-08-19   
925-272 6 Danville CA   722   2006-06-16   
925-273 8 Livermore CA   722   2001-10-29   
925-302 4 Bishop Ranch CA   722   2003-06-24   
925-395 A Walnut Creek CA OKLDCA03DS1  722      
925-395 9 Walnut Creek CA   722      
925-566 A Concord CA OKLDCA03DS1  722      
925-566 9 Concord CA   722      
925-965 A Pleasanton CA OKLDCA03DS1  722      
925-965 4 Pleasanton CA   722      
925-965 6 Pleasanton CA   722      
925-965 9 Pleasanton CA   722      
928-221 A Flagstaff AZ PHNXAZMAXPX  666      
928-221 5 Flagstaff AZ   666   2003-12-06   
928-285 A Somerton AZ PHNXAZMAX6Y  666   2012-10-07   
928-285 9 Somerton AZ   666   2012-10-07   
928-295 A Sedona AZ   666      
928-295 9 Sedona AZ   666   2014-10-16   
928-499 A Prescott AZ MESAAZTLAMD  666      
928-499 6 Prescott AZ   666      
928-638 5 Grand Canyon AZ   666   2004-04-30   
928-785 1 Yuma AZ   666   2005-10-07   
931-773 A Shelbyville TN NSVLTNMTDS4  470      
931-773 1 Shelbyville TN   470      
937-242 A Dayton OH DYTNOH15OMD  328      
937-242 4 Dayton OH   328      
937-242 9 Dayton OH   328      
937-248 2 Trotwood OH   328   2003-10-21   
937-306 3 Beavercreek OH   328   2003-10-20   
937-310 4 Bellbrook OH   328   2003-11-25   
937-347 4 Xenia OH   328   2006-04-24   
937-410 A Vandalia OH DYTNOH15X0X  328      
937-410 9 Vandalia OH   328      
937-471 A Springfield OH DYTNOH15OMD  328      
937-471 9 Springfield OH   328      
937-476 4 Dayton OH   328   2009-04-20   
937-506 A Tipp City OH DYTNOH15OMD  328      
937-506 9 Tipp City OH   328      
937-530 A Miamisburg-West Carrollton OH DYTNOH15OMD  328      
937-530 1 Miamisburg-West Carrollton OH   328      
937-552 A Troy OH DYTNOH15OMD  328      
937-552 0 Troy OH   328      
937-840 3 Hillsboro OH   328   2006-02-24   

<< 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, 10 Nov 2019 13:49:34 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.