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 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
956-615 7 Laredo TX   566   2016-11-23   
956-633 7 Santa Rosa TX   568   2016-03-12   
956-653 A Hargill TX HRLNTXHGXFX  568      
956-653 7 Hargill TX   568   2016-07-09   
956-660 A Harlingen TX HRLNTXHGXFX  568      
956-660 7 Harlingen TX   568   2016-02-20   
956-662 7 McAllen TX   568   2016-02-11   
956-671 A San Isidro TX HRLNTXHGXFX  568      
956-671 7 San Isidro TX   568   2016-07-09   
956-773 5 Lasara TX   568   2016-06-08   
956-848 7 Falcon Heights TX   568   2016-06-08   
959-200 A Hartford CT NWLNCTCS6MD  920      
959-200 7 Hartford CT   920   2014-11-09   
959-335 7 Norfolk CT   920   2017-06-22   
970-206 6 Fort Collins CO   656      
970-233 5 Collbran CO   656   2014-11-05   
970-235 7 Estes Park CO   656   2014-05-23   
970-287 7 Silt CO   656   2014-11-18   
970-289 7 Brush CO   656   2014-05-23   
970-293 6 Red Feather Lakes CO   656   2014-11-05   
970-296 7 Fruita CO   656   2014-05-23   
970-340 7 Carbondale CO   656   2014-05-23   
970-341 7 Olathe CO   656   2014-05-23   
970-360 6 Yuma CO   656   2014-11-05   
970-363 5 Fraser CO   656   2014-05-23   
970-394 7 Dolores CO   656   2014-11-05   
970-398 7 Pagosa Springs CO   656   2014-11-05   
970-407 4 Fort Collins CO   656      
970-407 5 Fort Collins CO   656      
970-408 7 Johnstown-Milliken CO   656   2015-05-26   
970-410 7 Kremmling CO   656   2014-11-19   
970-414 6 Parachute CO   656   2014-11-05   
970-431 9 Gypsum CO   656   2014-11-05   
970-432 6 Eagle CO   656   2014-11-05   
970-436 6 Lake City CO   656   2014-11-06   
970-438 7 Palisade CO   656   2014-11-05   
970-440 4 Rifle CO   656   2008-12-15   
970-441 6 Fort Morgan CO   656   2014-05-23   
970-465 6 McCoy CO   656   2014-11-06   
970-469 6 Otis CO   656   2014-11-06   
970-470 7 Vail CO   656   2015-05-23   
970-474 6 Julesburg CO   656   2014-05-23   
970-478 5 Norwood CO   656   2014-11-06   
970-485 7 Dillon CO   656   2015-05-23   
970-489 6 South Cheyenne CO   654   2015-03-18   
970-499 4 South Laramie CO   654   2015-03-18   
970-500 7 Weldona CO   656   2014-11-05   
970-512 6 Dove Creek CO   656   2014-11-05   
970-514 2 Akron CO   656   2014-11-05   
970-517 7 Hot Sulphur Springs CO   656   2015-01-07   
970-519 7 Telluride CO   656   2014-11-05   
970-528 7 Berthoud CO   656   2014-05-23   
970-536 7 New Castle CO   656   2014-11-06   
970-548 6 Rangely CO   656   2014-11-05   
970-550 6 Maybell CO   656   2014-11-06   
970-551 7 Marvel CO   656   2014-11-06   
970-553 7 Ignacio CO   656   2014-11-06   
970-557 6 Granby CO   656   2014-05-23   
970-570 4 Cortez CO   656   2015-05-26   
970-572 6 Rangely CO   656   2014-11-05   
970-579 2 De Beque CO   656   2014-05-23   
970-592 6 Wray CO   656   2014-11-05   
970-594 6 Walden CO   656   2014-11-05   
970-598 A Platteville CO HLRNCOFP1MD  656      
970-598 7 Platteville CO   656   2015-01-17   
970-601 5 Mead CO   656   2014-05-23   
970-615 8 Montrose CO   656   2015-06-15   
970-626 7 Ridgway CO   656   2014-11-05   
970-629 7 Craig CO   656   2014-05-23   
970-633 6 Ouray CO   656   2014-11-21   
970-642 8 Gunnison CO   656   2012-02-20   
970-661 7 Bayfield CO   656   2014-05-22   
970-665 5 Rifle CO   656   2014-11-05   
970-666 7 Fort Collins CO   656   2019-11-29   
970-693 7 Meeker CO   656   2014-11-18   
970-695 6 Mesa CO   656   2014-05-23   
970-699 7 Loveland CO   656   2015-05-26   
970-702 7 Greeley CO   656   2015-05-26   
970-707 7 Gunnison CO   656   2014-05-23   
970-710 8 Aspen CO   656   2015-05-23   
970-713 7 Crested Butte CO   656   2014-05-23   
970-715 7 Mancos CO   656   2014-11-18   
970-716 5 Eaton CO   656   2014-05-23   
970-717 6 Hayden CO   656   2014-05-23   
970-718 7 Basalt CO   656   2014-05-22   
970-737 5 Gilcrest CO   656   2014-05-23   
970-761 7 Steamboat Springs CO   656   2014-11-05   
970-762 7 Sterling CO   656   2014-11-05   
970-771 1 Breckenridge CO   656   2014-06-27   
970-788 5 Allison CO   656   2014-11-05   
970-789 A South Sidney CO GDISNENWUMD  646      
970-789 7 South Sidney CO   646   2015-03-16   
970-795 1 Windsor CO   656   2017-08-12   
970-798 5 Grand Lake CO   656   2014-05-23   
970-808 5 Delta CO   656   2014-05-23   
970-822 4 Grand Junction CO   656   2015-05-23   
970-825 7 Fort Collins CO   656   2015-05-26   
970-833 7 Windsor CO   656   2015-05-26   
970-847 9 Hillrose CO   656   2014-05-23   
970-855 7 Edwards CO   656   2014-11-05   

<< 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 >>

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.