Where is area code 972?

Area code 972 is in Texas, in the United States: all 800 of its exchanges on record are there. From abroad it is dialled +1 972, then the seven-digit number.

Is a 972 number mobile or landline?

Either: in the North American Numbering Plan the line type belongs to the exchange (the three digits after the area code), not to the area code. Of the 800 exchanges on record in 972, 109 (14%) were allocated as mobile, 647 (81%) as fixed line, 30 (4%) as VoIP and 14 (2%) have no line type on record. A number can have been ported since, to another carrier and even to another line type.

Which carriers have numbers in area code 972?

21 carriers hold exchanges in 972 on record; the most: AT&T (405), Frontier (168) and Verizon (78). These are the original allocations: with number portability, a number may be served by another carrier today, which only a live carrier lookup (an HLR or MNP query) can tell.

How do I validate a 972 phone number?

In E.164 a 972 number matches ^\+1972[2-9]\d{6}$: +1, the area code, a central office code that does not start with 0 or 1, then four digits. Written nationally it reads (972) 555-0123. The exchange patterns on this page narrow it to the exchanges allocated as mobile, fixed line or VoIP.

972

Area code 972

Texas, United States

National (972) 555-0123, E.164 +19725550123

How the 800 central office codes (exchanges) of area code 972 were allocated, from the North American Numbering Plan's records: to which carrier, as which line type. A 972 number is mobile, fixed line or VoIP according to its exchange, the three digits after the area code; the allocation is the original one (below).

At a glance

Country code: +1
State: TX
Exchanges on record: 800
Carriers on record: 21

Exchanges of 972 by the line type they were allocated as

Mobile 109 (14%)
Fixed line 647 (81%)
VoIP 30 (4%)
No line type on record 14 (2%)
800 exchanges on record

Most exchanges: AT&T 405, Frontier 168, Verizon 78.

Check a number

Valid fixed line or mobile number in the United States.

country code

972

area code

5550123

subscriber number

Country	United States numbering plan
Line type	Fixed line or mobile
Carrier the block was allocated to	No carrier on record for this prefix
E.164	+19725550123
International	+1 972-555-0123
National	(972) 555-0123
RFC 3966	tel:+1-972-555-0123

Source: North American Numbering Plan Administrator (NANPA); Canadian Numbering Administrator (CNAC); National numbering plan: United States (ITU)

The example is 972-555-0123: 555-0100 to 555-0199 are set aside for fictional use in every area code.

The exchange map

Every exchange of 972, by the line type it was allocated as

One cell per exchange: blocks 972 2xx to 972 9xx; in each block the row is the tens digit, the column the units digit.

Mobile 109
Fixed line 647
VoIP 30
No line type on record 14

Formats and patterns

E.164	+19725550123
International	+1 972-555-0123
National	(972) 555-0123
RFC 3966 (tel: URI)	tel:+1-972-555-0123

Any 972 number, in E.164

^\+1972[2-9]\d{6}$

+1, the area code, a central office code that does not start with 0 or 1, then four digits.

Mobile exchanges (109 on record)

^\+1972(?:2(?:0[79]|1[34]|29|97)|3(?:[04][25]|1[09]|2[0-267]|33|5[68]|65|97)|4(?:00|15|51|[67]7|8[29])|5(?:00|[23]3|45|6[578]|71|89|9[23])|6(?:[08]9|2[26]|3[19]|48|5[48]|67|7[029]|93)|7(?:03|10|4[0-3]|5[47]|6[0258]|87|99)|8(?:0[024]|1[46]|2[124]|3[2459]|4[19]|7[379]|8[05]|9[6-8])|9(?:0[02-49]|2[12]|[49]8|5[15]|6[57]|7[147-9]|89))\d{4}$

Fixed line exchanges (647 on record)

^\+1972(?:2(?:0[0-68]|1[025-9]|2[0-8]|[3-578]\d|6[0-79]|9[0-689])|3(?:0[0134679]|1[235-8]|2[3-589]|3[24-9]|4[01346-9]|5[0-59]|6[0-46-9]|[78]\d|9[0-689])|4(?:[04][1-9]|1[02-46-9]|[29]\d|3[02-9]|5[02-689]|6[1-689]|7[0-689]|8[013-8])|5(?:0[1-9]|1[02-9]|[23][0-24-9]|[45][0-46-9]|6[0-469]|7[024-9]|8[0-46-8]|9[014-9])|6(?:0[1-8]|1[02-9]|2[013-57-9]|3[035-8]|4[1-79]|5[0-35-79]|6[0-689]|7[135-8]|8[0-7]|9[0-24-9])|7(?:0[124-9]|1[2-9]|[237]\d|4[4-9]|5[0-3689]|6[134679]|8[0-689]|9[0-8])|8(?:0[135-9]|1[0357-9]|2[05-9]|3[0136-8]|4[0235-7]|[56]\d|7[0-24-68]|8[1-46-9]|9[0-49])|9(?:0[15-8]|1[02-9]|2[3-79]|3\d|4[0-4679]|5[2367]|6[0-4689]|7[35]|8[0-8]|9[0-79]))\d{4}$

VoIP exchanges (30 on record)

^\+1972(?:268|3(?:08|14|3[01]|57)|4(?:31|[46]0|57)|5(?:73|85)|6(?:[04]0|3[24]|74|88)|755|8(?:12|23|4[48]|95)|9(?:2[08]|45|54|7[02]))\d{4}$

The exchange patterns follow the original allocations; a number ported since keeps its digits but not necessarily its carrier or its line type.

Carriers and their exchanges

Every carrier holding exchanges in 972, with the exchanges allocated to it (the three digits after the area code).

Carrier	Exchanges	Mobile	Fixed line	VoIP	Exchanges held
AT&T	405	58	346	1	202–204, 206–207, 209, 214, 216–218, 222–228, 230–231, 233–239, 241, 243–244, 246–248, 250, 260, 262–264, 266–267, 269–270, 274–275, 277, 279–280, 282–294, 296, 298–299, 301, 308–310, 312, 322, 329, 332, 334–349, 351–352, 359–362, 364, 368–371, 373, 376–377, 380–383, 385–388, 390–392, 396, 398, 400–402, 404–407, 409, 415, 419, 427, 432–433, 437, 443–444, 447–448, 450, 454–455, 458, 467, 470, 472, 474, 476–477, 479–481, 483–484, 488–490, 497–498, 501, 503–504, 506, 510, 515, 520, 522–524, 526, 528–529, 531, 533, 540, 542, 547–548, 551–552, 556–559, 561–567, 569, 571–572, 576, 583–584, 587–588, 591, 595, 601–603, 606, 610, 613–614, 617, 619–620, 623–625, 628–630, 635–636, 638–639, 641–644, 647, 654, 658, 660–661, 663–664, 669, 671–673, 677, 679–687, 689–690, 697–699, 701–702, 704–706, 708–710, 712–713, 715–716, 720, 722–723, 726–727, 730–736, 738, 740–744, 747, 750, 754, 757, 761–766, 770–776, 778–780, 782–784, 787–789, 792, 795, 799, 800–801, 804, 806, 808–809, 816–820, 822, 824–825, 828, 830–832, 834–835, 837–839, 851, 855–861, 863, 866, 868–872, 875–876, 878, 882–884, 888–889, 900–901, 903–904, 906–907, 910, 913, 917–919, 921–924, 927, 930–931, 933–938, 940, 942–943, 946, 948–949, 951–953, 955–956, 960, 965, 968–969, 971, 974–975, 977–980, 982–983, 987–991, 994–997
Frontier	168	0	168	0	205, 208, 219, 221, 240, 242, 245, 251–259, 261, 271–273, 276, 278, 281, 295, 303–304, 306–307, 313, 315–318, 323, 353, 355, 378–379, 389, 393–395, 399, 403, 412–414, 416–418, 420, 422–425, 429, 434, 436, 438, 442, 445–446, 453, 456, 459, 461–463, 465–466, 468, 471, 473, 475, 478, 485, 487, 491–492, 494–496, 507, 509, 513–514, 516–519, 527, 530, 537, 539, 541, 550, 554, 570, 574–575, 578–580, 582, 586, 594, 596, 599, 604–605, 607–608, 612, 615, 618, 621, 633, 650, 652–653, 655, 657, 659, 662, 675, 691, 695–696, 714, 717–719, 721, 724, 745, 751, 753, 756, 758, 769, 781, 785, 790–791, 796–797, 840, 862, 864, 867, 874, 881, 887, 893, 905, 915–916, 926, 929, 939, 941, 947, 964, 966, 973, 981, 985–986
Verizon	78	8	70	0	201, 213, 232, 249, 324, 358, 366–367, 372, 374–375, 408, 435, 439, 441, 449, 482, 502, 505, 512, 525, 532, 534–536, 538, 543–544, 560, 577, 581, 626, 646, 649, 656, 665–666, 676, 692, 694, 707, 725, 728–729, 737, 739, 749, 752, 759, 767–768, 793–794, 803, 807, 810, 813, 815, 827, 836, 841–843, 845–846, 849, 852–853, 890–892, 908, 925, 957, 961, 963, 984, 998
Lumen	33	0	32	1	200, 265, 325, 350, 421, 426, 428, 430–431, 464, 499, 521, 546, 590, 597, 616, 637, 645, 746, 748, 786, 798, 805, 829, 833, 850, 854, 894, 914, 932, 962, 992, 999
Onvoy	24	0	0	24	268, 314, 330–331, 357, 440, 457, 460, 573, 585, 600, 632, 634, 640, 755, 812, 823, 848, 895, 920, 928, 954, 970, 972
USA Mobility	20	20	0	0	229, 297, 319–321, 326, 356, 397, 451, 500, 545, 568, 592–593, 609, 622, 667, 760, 902, 909
Astound Broadband	19	0	19	0	212, 215, 220, 300, 363, 384, 410, 508, 549, 553, 651, 668, 678, 826, 847, 865, 886, 899, 912
T-Mobile	16	16	0	0	302, 327, 333, 365, 589, 670, 693, 703, 802, 814, 821, 877, 880, 896–898
Tpx Communications	4	0	4	0	210, 354, 469, 993
Windstream	4	0	4	0	452, 486, 493, 627
American Messaging	3	3	0	0	631, 648, 879
Teletouch	3	3	0	0	305, 873, 967
Bandwidth.com	1	0	0	1	674
Brightlink Communications	1	1	0	0	885
E. Ritter Communications	1	0	1	0	328
Eon Telecom	1	0	1	0	944
Exiant	1	0	0	1	844
HD Carrier	1	0	0	1	688
Peerless Network	1	0	0	1	945
Spectrum	1	0	1	0	598
USFON INC	1	0	1	0	777

Questions developers ask

Where is area code 972?: Area code 972 is in Texas, in the United States: all 800 of its exchanges on record are there. From abroad it is dialled +1 972, then the seven-digit number.
Is a 972 number mobile or landline?: Either: in the North American Numbering Plan the line type belongs to the exchange (the three digits after the area code), not to the area code. Of the 800 exchanges on record in 972, 109 (14%) were allocated as mobile, 647 (81%) as fixed line, 30 (4%) as VoIP and 14 (2%) have no line type on record. A number can have been ported since, to another carrier and even to another line type.
Which carriers have numbers in area code 972?: 21 carriers hold exchanges in 972 on record; the most: AT&T (405), Frontier (168) and Verizon (78). These are the original allocations: with number portability, a number may be served by another carrier today, which only a live carrier lookup (an HLR or MNP query) can tell.
How do I validate a 972 phone number?: In E.164 a 972 number matches ^\+1972[2-9]\d{6}$: +1, the area code, a central office code that does not start with 0 or 1, then four digits. Written nationally it reads (972) 555-0123. The exchange patterns on this page narrow it to the exchanges allocated as mobile, fixed line or VoIP.