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: 508J CENTURYLINK COMMUNICATIONS, LLC

<< 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
423-551 A Chattanooga TN CHTGTNNSX8Z  472      
423-551 7 Chattanooga TN CHTGTNNSX8Z  472   2014-04-22   
423-615 7 Collegedale TN CHTGTNNSX8Z  472   2014-05-06   
423-641 7 Cleveland TN CHTGTNNSX8Z  472   2014-06-06   
423-797 7 Bristol TN JHCYTNXCX1Y  956   2014-04-19   
423-815 7 Whitwell TN CHTGTNNSX8Z  472   2014-05-06   
424-282 7 Redondo CA LSANCAJW2MD  730   2013-03-13   
424-285 7 Beverly Hills CA LSANCAJW2MD  730   2013-03-18   
424-287 6 San Pedro CA LSANCAJW2MD  730   2013-03-18   
424-289 7 Santa Monica: Mar Vista DA CA LSANCAJW2MD  730   2013-03-15   
424-290 7 El Segundo CA LSANCAJW2MD  730   2013-03-18   
424-291 A Santa Monica: Santa Monica DA CA LSANCAJW2MD  730      
424-291 7 Santa Monica: Santa Monica DA CA LSANCAJW2MD  730   2013-03-26   
424-292 A Compton: Gardena DA CA LSANCAJW2MD  730      
424-292 7 Compton: Gardena DA CA LSANCAJW2MD  730   2013-03-26   
424-297 A Hawthorne CA LSANCAJW2MD  730      
424-297 7 Hawthorne CA LSANCAJW2MD  730   2013-03-26   
424-328 A Lomita CA LSANCAJW2MD  730      
424-328 7 Lomita CA LSANCAJW2MD  730   2013-03-27   
424-334 7 Avalon CA LSANCAJW2MD  730   2014-06-27   
424-337 7 Torrance CA LSANCAJW2MD  730   2014-04-09   
424-346 7 Malibu CA LSANCAJW2MD  730   2014-06-27   
424-407 7 West Los Angeles CA LSANCAJW2MD  730   2018-06-08   
424-433 7 Santa Monica: Santa Monica DA CA LSANCAJW2MD  730   2017-01-12   
424-732 4 Inglewood CA LSANCAJW2MD  730   2013-03-18   
425-307 8 Kirkland WA TKWLWALL4MD  674   2021-08-30   
425-341 7 Silver Lake WA TKWLWALL4MD  674   2014-04-08   
425-363 7 North Bend WA TKWLWALL4MD  674   2013-12-27   
425-390 7 Renton WA TKWLWALL4MD  674   2015-06-26   
425-406 A Kirkland WA TKWLWALL4MD  674      
425-406 5 Kirkland WA TKWLWALL4MD  674   2013-12-27   
425-434 3 Snoqualmie Pass WA TKWLWALL4MD  674   2017-09-29   
425-434 4 Snoqualmie Pass WA TKWLWALL4MD  674   2013-12-27   
425-441 2 Fall City WA TKWLWALL4MD  674   2013-12-27   
425-471 6 Bothell WA TKWLWALL4MD  674   2013-12-27   
425-490 0 Fall City WA TKWLWALL4MD  674   2021-08-30   
425-549 6 Carnation WA TKWLWALL4MD  674   2013-12-26   
425-559 6 Bellevue WA TKWLWALL4MD  674   2015-06-26   
425-569 7 Maple Valley WA TKWLWALL4MD  674   2015-06-26   
425-588 2 Kirkland WA TKWLWALL4MD  674   2017-06-09   
425-589 6 Bellevue WA TKWLWALL4MD  674   2017-01-12   
425-610 A Everett WA TKWLWALL4MD  674      
425-610 2 Everett WA TKWLWALL4MD  674   2013-12-05   
425-651 7 Issaquah WA TKWLWALL4MD  674   2015-06-26   
425-697 1 Halls Lake WA TKWLWALL4MD  674   2013-12-27   
425-880 1 Ames Lake WA TKWLWALL4MD  674   2013-12-26   
425-946 0 Carnation WA TKWLWALL4MD  674   2021-09-24   
425-966 0 Snoqualmie Pass WA TKWLWALL4MD  674   2021-09-24   
430-206 A Wolfe City TX FTWQTXFH0MD  552      
430-206 7 Wolfe City TX FTWQTXFH0MD  552   2014-06-21   

<< 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 >>

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.