631
Area code 631
New York, United States
National (631) 555-0123, E.164 +16315550123
How the 799 central office codes (exchanges) of area code 631 were allocated, from the North American Numbering Plan's records: to which carrier, as which line type. A 631 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
- NY
- Exchanges on record
- 799
- Carriers on record
- 30
- Mobile 195 (24%)
- Fixed line 520 (65%)
- VoIP 69 (9%)
- No line type on record 15 (2%)
- 799 exchanges on record
Most exchanges: Verizon 340, AT&T 87, T-Mobile 85.
Check a number
Valid fixed line or mobile number in the United States.
+1
country code
631
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 | +16315550123 |
| International | +1 631-555-0123 |
| National | (631) 555-0123 |
| RFC 3966 | tel:+1-631-555-0123 |
Source: North American Numbering Plan Administrator (NANPA); Canadian Numbering Administrator (CNAC); National numbering plan: United States (ITU)
The example is 631-555-0123: 555-0100 to 555-0199 are set aside for fictional use in every area code.
The exchange map
One cell per exchange: blocks 631 2xx to 631 9xx; in each block the row is the tens digit, the column the units digit.
- Mobile 195
- Fixed line 520
- VoIP 69
- No line type on record 15
- Not on record 1
Formats and patterns
| E.164 | +16315550123 |
|---|---|
| International | +1 631-555-0123 |
| National | (631) 555-0123 |
| RFC 3966 (tel: URI) | tel:+1-631-555-0123 |
Any 631 number, in E.164
^\+1631[2-9]\d{6}$+1, the area code, a central office code that does not start with 0 or 1, then four digits.
Mobile exchanges (195 on record)
^\+1631(?:2(?:1[59]|[28]0|35|4[15]|5[258]|6[03]|7[5689]|9[014])|3(?:0[3-578]|1[067]|2[27]|3[24-68]|4[07]|5[2568]|65|7[1-579]|8[134]|9[48])|4(?:0[18]|1[36]|2[68]|3[1-3]|4[12589]|5[23569]|6[13]|8[47]|9[45])|5(?:0[78]|12|2[34]|3[08]|5[02-4689]|6[05]|7[2589]|99)|6(?:0[159]|17|2[46]|36|4[045]|6[024]|7[12]|8[0-2]|9[057])|7(?:0[348]|18|20|33|4[0-25-8]|6[467]|74|86|9[036])|8(?:0[4-79]|1[69]|2[79]|3[13-689]|48|55|7[1-357]|8[0259]|9[67])|9(?:0[1-36]|[17]4|2[126]|3[3-59]|4[23689]|65|8[47-9]|9[47]))\d{4}$Fixed line exchanges (520 on record)
^\+1631(?:2(?:0[04-9]|1[0346-8]|[28][1-9]|3[1-46-9]|4[02-4679]|5[0134679]|6[124-79]|7[0-47]|9[235-9])|3(?:0[069]|1[23589]|2[013-689]|3[0137]|4[1-58]|5[0147]|6[01346-9]|7[068]|8[025-9]|9[0-3569])|4(?:0[2-6]|1[02457-9]|2[0-57]|3[4-79]|4[03467]|5[1478]|6[025-9]|7\d|8[0-35689]|9[0-3689])|5(?:0[1-469]|1[0347]|2[0-2578]|[36][1-4679]|4[1-46-9]|51|7[03467]|8\d|9[0-8])|6(?:0[2-46-8]|1[025689]|2[0-37-9]|3[02-57-9]|4[237-9]|5\d|6[135-9]|7[03-9]|8[36-9]|9[1-4689])|7(?:0[12679]|1[02-79]|2[1-9]|3[0-246-9]|4[349]|5\d|6[0-3589]|7[0-35-9]|8[0-57-9]|9[12457-9])|8(?:0[1-3]|1[2358]|2[0-468]|3[027]|4[0-79]|5[0-46-9]|6\d|7[04689]|8[1346-8]|9[0-489])|9(?:0[457-9]|1[02358]|2[03-57-9]|3[0-26-8]|4[0147]|5[1-35-7]|6[0-47-9]|7[1-389]|8[1-3]|9[0-35689]))\d{4}$VoIP exchanges (69 on record)
^\+1631(?:2(?:0[1-3]|12|30|[46]8)|3(?:0[12]|14|39|4[69]|5[39]|97)|4(?:0[079]|29|3[08]|50|64|97)|5(?:[04][05]|1[5689]|2[69]|35|57|68|71)|6(?:00|1[34]|25|31|4[16]|8[45])|7[03]5|8(?:0[08]|1[047]|[29]5)|9(?:00|1[69]|45|54|66|7[057]|8[056]))\d{4}$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 631, with the exchanges allocated to it (the three digits after the area code).
| Carrier | Exchanges | Mobile | Fixed line | VoIP | Exchanges held |
|---|---|---|---|---|---|
| Verizon | 340 | 44 | 296 | 0 | 200, 204–209, 216, 218–219, 221–226, 228–229, 231–235, 241–244, 246, 249, 252–254, 258–267, 269–274, 277, 281–289, 293, 298, 300, 304, 316, 318–319, 321, 323–326, 329, 331, 335, 338, 341–342, 344–345, 348, 350–351, 357–358, 360–361, 363, 366–369, 372, 376, 379, 382, 385, 391, 395, 399, 403, 405, 412, 416, 418–425, 427, 432, 434–436, 444, 447, 451, 454, 456, 459–462, 467–468, 471–478, 481, 487, 489, 491–493, 495, 499, 501, 506, 508, 510, 514, 528, 531, 533–534, 537, 541, 543–544, 547–549, 551, 553, 560, 563, 567, 576–577, 580–589, 595–599, 602, 609, 616–617, 621, 624, 626, 628, 632, 637–638, 642–644, 652–654, 661, 665–669, 673–674, 677–679, 683, 687, 689, 691–692, 694, 696, 698–699, 706, 708, 716, 721–728, 732, 734, 736–740, 744, 749, 751–758, 763, 765–766, 769–770, 776–778, 780–781, 783, 785–786, 789, 791, 793, 795, 797–799, 804, 806–807, 820–821, 826, 832, 834, 837, 841–845, 847–848, 850–854, 857–864, 869, 873–874, 878–879, 883–884, 888, 890, 892–893, 898, 904–905, 907, 910, 912–913, 921, 924, 928–929, 932, 936, 941–942, 947, 951–953, 955–957, 962–964, 968–969, 978–979, 981–983, 987, 993, 995 |
| AT&T | 87 | 49 | 38 | 0 | 213, 239, 245, 247, 255–256, 305, 307, 310, 312, 317, 327, 332, 347, 370, 374–375, 377, 380, 387, 401, 404, 413, 437, 457, 503, 512, 524, 538, 559, 561, 579, 601, 605, 607, 619, 623, 636, 639, 655, 662, 680–682, 688, 690, 693, 697, 701, 704, 712, 715, 729, 741–742, 745, 747, 760, 784, 787, 792, 823, 827, 835, 838, 866, 871, 875, 880–881, 894, 897, 902–903, 914, 918, 923, 927, 935, 946, 960, 965, 973, 988, 991, 994, 997 |
| T-Mobile | 85 | 85 | 0 | 0 | 215, 220, 275–276, 278, 290–291, 294, 303, 308, 334, 336, 352, 355–356, 365, 371, 381, 383–384, 394, 398, 408, 426, 428, 431, 433, 445, 448–449, 452, 455, 463, 484, 494, 507, 523, 530, 552, 565, 572, 575, 578, 640, 645, 660, 664, 671–672, 703, 718, 720, 746, 748, 764, 767, 774, 790, 796, 805, 809, 816, 829, 831, 833, 836, 839, 855, 872, 877, 882, 885, 889, 896, 901, 906, 922, 926, 933–934, 939, 943, 948–949, 974 |
| Lumen | 56 | 0 | 55 | 1 | 236, 240, 251, 292, 295, 306, 337, 354, 378, 415, 440, 443, 458, 466, 479, 485, 496, 513, 517, 520–521, 525, 536, 546, 566, 569–570, 590, 593, 610, 612, 615, 618, 649, 657, 702, 707, 709, 714, 731, 759, 762, 771, 808, 813, 815, 830, 840, 865, 867, 876, 899, 925, 938, 961, 972 |
| Cablevision Lightpath | 55 | 0 | 55 | 0 | 237, 257, 309, 313, 330, 390, 393, 396, 414, 417, 439, 465, 469–470, 486, 539, 591–592, 608, 620, 622, 627, 630, 634–635, 647–648, 650, 656, 659, 663, 670, 675, 686, 710, 719, 730, 750, 761, 772, 775, 801, 803, 818, 828, 846, 849, 868, 886, 909, 920, 940, 992, 996, 998 |
| Onvoy | 37 | 0 | 0 | 37 | 201–203, 212, 302, 349, 400, 450, 497, 500, 515–516, 526, 529, 540, 557, 600, 613–614, 625, 646, 685, 705, 800, 810, 814, 817, 895, 900, 919, 945, 970, 975, 977, 980, 985–986 |
| Paetec Itel | 32 | 0 | 32 | 0 | 210, 227, 297, 299, 328, 333, 364, 386, 389, 410, 498, 532, 564, 574, 603, 633, 713, 768, 773, 782, 794, 802, 812, 822, 824, 870, 887, 891, 930, 944, 967, 971 |
| Optimum | 30 | 0 | 30 | 0 | 214, 238, 250, 296, 315, 320, 343, 388, 392, 446, 482, 488, 504, 509, 522, 527, 562, 573, 594, 604, 606, 629, 651, 658, 676, 743, 779, 856, 908, 937 |
| Peerless Network | 13 | 0 | 0 | 13 | 230, 248, 268, 359, 429–430, 518–519, 535, 545, 571, 684, 735 |
| Bandwidth.com | 12 | 0 | 0 | 12 | 339, 346, 353, 397, 407, 438, 464, 505, 631, 641, 825, 954 |
| USA Mobility | 9 | 9 | 0 | 0 | 279, 322, 340, 373, 441–442, 554, 558, 695 |
| Telengy | 6 | 0 | 6 | 0 | 402, 480, 483, 490, 502, 542 |
| TELNYX | 3 | 0 | 0 | 3 | 301, 314, 916 |
| American Network | 2 | 0 | 2 | 0 | 217, 915 |
| CSC Wireless LLC | 2 | 2 | 0 | 0 | 819, 984 |
| AAT Paging Corporation | 1 | 1 | 0 | 0 | 556 |
| Airus Inc | 1 | 0 | 1 | 0 | 990 |
| American Messaging | 1 | 1 | 0 | 0 | 453 |
| Astound Broadband | 1 | 0 | 1 | 0 | 406 |
| Emergency Networks | 1 | 1 | 0 | 0 | 989 |
| Fishers Island Telephone Corporation | 1 | 0 | 1 | 0 | 788 |
| Fractel | 1 | 0 | 0 | 1 | 966 |
| HD Carrier | 1 | 0 | 0 | 1 | 568 |
| IP Horizon | 1 | 0 | 0 | 1 | 409 |
| LTE Wireless | 1 | 1 | 0 | 0 | 550 |
| Peering Hub Inc | 1 | 0 | 1 | 0 | 717 |
| Scarsdale Security Systems | 1 | 1 | 0 | 0 | 733 |
| Shelltel | 1 | 1 | 0 | 0 | 280 |
| Wide Voice | 1 | 0 | 1 | 0 | 931 |
| Yorkstream Communications | 1 | 0 | 1 | 0 | 999 |
Questions developers ask
- Where is area code 631?
- Area code 631 is in New York, in the United States: all 799 of its exchanges on record are there. From abroad it is dialled +1 631, then the seven-digit number.
- Is a 631 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 799 exchanges on record in 631, 195 (24%) were allocated as mobile, 520 (65%) as fixed line, 69 (9%) as VoIP and 15 (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 631?
- 30 carriers hold exchanges in 631 on record; the most: Verizon (340), AT&T (87) and T-Mobile (85). 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 631 phone number?
- In E.164 a 631 number matches ^\+1631[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 (631) 555-0123. The exchange patterns on this page narrow it to the exchanges allocated as mobile, fixed line or VoIP.