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: 516C AT&T CORP.

<< 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 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
512-792 9 Austin TX AUSTTXGR25Z  558   2014-10-17   
512-838 6 Austin TX AUSTTXGR25Z  558   2014-07-28   
512-840 0 Austin TX AUSTTXGR25Z  558   2014-10-13   
512-840 1 Austin TX AUSTTXGR25Z  558   2014-10-13   
512-861 5 Austin TX AUSTTXGR25Z  558   2010-08-10   
512-953 5 Austin TX AUSTTXGR25Z  558   2015-04-14   
513-402 4 Monroe OH DYTNOH15WMD  328   2011-01-03   
513-468 3 Trenton OH DYTNOH15WMD  328   2011-01-19   
513-849 2 Middletown OH DYTNOH15WMD  328   2011-01-03   
517-224 9 Potterville MI LNNGMIMNXMZ  346   2011-09-30   
517-235 A Dimondale MI LNNGMIMNXMZ  346      
517-235 7 Dimondale MI LNNGMIMNXMZ  346   2011-02-04   
517-305 6 Clarklake MI LNNGMIMNXMZ  346   2011-09-30   
517-310 A Mulliken MI LNNGMIMNXMZ  346      
517-310 7 Mulliken MI LNNGMIMNXMZ  346   2023-10-31   
517-441 6 Eaton Rapids MI LNNGMIMNXMZ  346   2011-09-30   
517-465 A Albion MI LNNGMIMNXMZ  346      
517-465 7 Albion MI LNNGMIMNXMZ  346   2010-02-04   
517-526 9 Portland MI LNNGMIMNXMZ  346   2011-06-17   
517-539 0 Jackson MI LNNGMIMNXMZ  346   2015-05-11   
517-615 5 Vermontville MI LNNGMIMNXMZ  346   2011-09-30   
517-618 7 Howell MI DTRTMIBASMD  340   2006-06-30   
517-664 0 Lansing MI LNNGMIMNXMZ  346   2016-09-19   
517-684 5 Napoleon MI LNNGMIMNXMZ  346   2011-09-30   
517-708 0 Lansing MI LNNGMIMNXMZ  346   2014-09-08   
517-715 5 Fowlerville MI LNNGMIMNXMZ  346   2011-09-30   
517-721 1 Lansing MI LNNGMIMNXMZ  346      
517-742 A Holt MI LNNGMIMNXMZ  346      
517-742 7 Holt MI LNNGMIMNXMZ  346   2008-10-02   
517-748 A Jackson MI LNNGMIMNXMZ  346      
517-748 7 Jackson MI LNNGMIMNXMZ  346      
517-763 2 Lansing MI LNNGMIMNXMZ  346   2012-12-19   
517-797 6 Hillsdale MI LNNGMIMNXMZ  346   2011-09-30   
517-852 5 Nashville MI LNNGMIMNXMZ  346   2011-09-30   
517-878 3 Leslie MI LNNGMIMNXMZ  346   2013-11-08   
517-883 5 Mason MI LNNGMIMNXMZ  346   2011-09-30   
517-955 5 Dansville MI LNNGMIMNXMZ  346   2011-09-30   
517-983 5 Charlotte MI LNNGMIMNXMZ  346   2011-09-30   
517-995 5 Jonesville MI LNNGMIMNXMZ  346   2011-10-14   
530-212 5 Winters CA SCRMCA01XEZ  726   2011-05-27   
530-213 6 North Tahoe: Brockway DA CA SCRMCA01XEZ  726   2011-05-27   
530-235 7 Dunsmuir CA CHICCA78AMD  724   2011-08-05   
530-276 0 Redding CA CHICCA78AMD  724   2011-06-20   
530-288 5 Camptonville CA SCRMCA01XEZ  726   2011-09-26   
530-292 2 North San Juan CA SCRMCA01XEZ  726   2011-09-26   
530-293 5 Placerville: Kyburz DA CA SCRMCA01XEZ  726   2013-02-17   
530-330 7 Willows CA CHICCA78AMD  724   2012-12-03   
530-334 9 Georgetown CA SCRMCA01XEZ  726   2011-09-26   
530-347 8 Cottonwood CA CHICCA78AMD  724   2013-02-17   
530-359 5 French Gulch CA CHICCA78AMD  724   2025-01-08   

<< 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 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 >>

Last updated: Tue, 31 Mar 2026 13:56:49 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.