313
Area code 313
Michigan, United States
National (313) 555-0123, E.164 +13135550123
How the 782 central office codes (exchanges) of area code 313 were allocated, from the North American Numbering Plan's records: to which carrier, as which line type. A 313 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
- MI
- Exchanges on record
- 782
- Carriers on record
- 31
- Mobile 346 (44%)
- Fixed line 338 (43%)
- VoIP 85 (11%)
- No line type on record 13 (2%)
- 782 exchanges on record
Most exchanges: AT&T 361, T-Mobile 156, Verizon 79.
Check a number
Valid fixed line or mobile number in the United States.
+1
country code
313
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 | +13135550123 |
| International | +1 313-555-0123 |
| National | (313) 555-0123 |
| RFC 3966 | tel:+1-313-555-0123 |
Source: North American Numbering Plan Administrator (NANPA); Canadian Numbering Administrator (CNAC); National numbering plan: United States (ITU)
The example is 313-555-0123: 555-0100 to 555-0199 are set aside for fictional use in every area code.
The exchange map
One cell per exchange: blocks 313 2xx to 313 9xx; in each block the row is the tens digit, the column the units digit.
- Mobile 346
- Fixed line 338
- VoIP 85
- No line type on record 13
- Not on record 18
Formats and patterns
| E.164 | +13135550123 |
|---|---|
| International | +1 313-555-0123 |
| National | (313) 555-0123 |
| RFC 3966 (tel: URI) | tel:+1-313-555-0123 |
Any 313 number, in E.164
^\+1313[2-9]\d{6}$+1, the area code, a central office code that does not start with 0 or 1, then four digits.
Mobile exchanges (346 on record)
^\+1313(?:2(?:0[014578]|1[2-589]|2[09]|3[1689]|4[47]|5[078]|6[04-689]|76|8[02379]|9[036])|3(?:0[0134]|1[05689]|2[015-9]|3[039]|4[89]|5[02-468]|6[37]|7[046-8]|84|9[1589])|4(?:0[0-57-9]|1[02-589]|2[1348]|3[01349]|4[0357]|5[2459]|6[016-8]|7[57-9]|8[05]|9[258])|5(?:0[0-3569]|1[0569]|2[02359]|3[09]|4[49]|50|69|7[03-5]|8[057-9]|9[0578])|6(?:0[0135-9]|1[03-578]|2[02379]|3[0239]|4[13589]|5[024578]|6[0139]|7[013-6]|8[0-79]|9[01579])|7(?:0[124-9]|1[02-9]|2[0137-9]|3[4578]|4[1247]|5[02-49]|6[247]|7[03569]|8[157]|9[035-9])|8(?:0[1-9]|1[02-57-9]|2[09]|4[0478]|5[013-578]|[69]0|78)|9(?:0[1-47-9]|1[02-47-9]|[26][09]|3[02689]|4[0-289]|5[358]|7[017-9]|8[056]|9[059]))\d{4}$Fixed line exchanges (338 on record)
^\+1313(?:2(?:0[236]|1[06]|2[1-8]|3[02-57]|4[023589]|5[2-69]|6[237]|7[0-57-9]|8[168]|9[12457-9])|3(?:0[2589]|1[237]|2[2-4]|3[124-8]|4[0-7]|5[179]|6[0-25689]|7[1-359]|8[1-36-9]|9[02-46])|4(?:1[67]|2[0259]|3[26-8]|4[124689]|5[036-8]|6[35]|7[13]|8[1-467]|9[013469])|5(?:0[78]|12|2[167]|3[1-578]|4[1356]|5[134679]|6[0-8]|7[16-9]|8[1-46]|9[2-469])|6(?:0[24]|1[69]|2[1458]|37|4[027]|5[1369]|6[24578]|7[28]|9[26])|7(?:2[245]|3[0-369]|4[3589]|5[568]|6[01689]|7[248]|8[026]|9[124])|8(?:16|2[1-8]|[369][1-9]|4[1-3569]|5[29]|7[0-79]|8[1-7])|9(?:1[56]|2[1-8]|3[13-57]|4[35]|5[267]|6[1-7]|7[24]|8[239]|9[36]))\d{4}$VoIP exchanges (85 on record)
^\+1313(?:2(?:09|17|4[16]|[56]1|8[45])|3(?:0[67]|[16]4|55|8[05]|97)|4(?:06|2[67]|35|51|6[249]|7[0246]|8[89]|97)|5(?:04|1[348]|2[48]|36|4[0278]|5[28]|72|91)|6(?:12|[26]6|3[14-68]|4[46]|77|88|9[348])|7(?:03|26|4[06]|[57][17]|6[35]|8[489])|8(?:[03]0|56|8[089])|9(?:00|4[46]|9[28]))\d{4}$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 313, with the exchanges allocated to it (the three digits after the area code).
| Carrier | Exchanges | Mobile | Fixed line | VoIP | Exchanges held |
|---|---|---|---|---|---|
| AT&T | 361 | 95 | 262 | 4 | 202–204, 206, 212, 221–227, 232–235, 237, 240, 244–245, 248–249, 252–253, 255–256, 259, 267, 270–275, 277–278, 291–292, 294–295, 297–299, 302–303, 310, 317–318, 320, 322–324, 330–331, 335–343, 345, 351, 354, 359–361, 365–366, 368–369, 371–373, 375, 381–383, 386–390, 392–394, 396, 401, 404–405, 408–409, 412, 417, 421, 425, 429, 436–439, 441–442, 446, 448, 452, 456, 460, 463, 465, 471–473, 479, 482, 490–491, 493–494, 496, 499, 501, 505–508, 510, 515, 520–521, 526–527, 531–535, 537–539, 541, 543, 545–546, 551, 553–554, 556, 560–568, 571, 576–579, 581–584, 592–594, 596, 599, 602, 605, 607–608, 610, 613, 617, 619, 621, 624, 627–628, 640, 642, 647, 650, 653–657, 659, 664–665, 667, 669, 676, 678, 680–683, 685–687, 689–690, 694, 697, 702, 704, 706, 715, 719, 722, 724, 727, 730, 735, 737–741, 745, 753, 755–756, 758, 760, 764, 770, 772, 774, 778, 780–782, 785–786, 789, 791–792, 794, 799, 801–802, 804, 807–809, 819, 821–826, 831–839, 841–843, 845–846, 849, 852–854, 857, 860–878, 881–886, 890–899, 901–902, 904, 907–908, 914, 916–917, 921–931, 933–935, 937, 941–943, 945, 956–957, 961–967, 970, 972, 974, 977–978, 980, 982–983, 993, 996 |
| T-Mobile | 156 | 156 | 0 | 0 | 200, 205, 207–208, 213–215, 218, 220, 229, 231, 247, 257–258, 264–266, 282–283, 287, 289–290, 293, 304, 315, 326–327, 329, 333, 349–350, 352–353, 356, 358, 363, 367, 370, 374, 377, 384, 395, 398–399, 403, 413–415, 419, 423–424, 428, 431, 433, 443, 445, 447, 454–455, 459, 461, 466–468, 475, 477–478, 485, 492, 502, 509, 516, 519, 522–523, 525, 529, 544, 574–575, 585, 587, 589, 595, 598, 603, 615, 622–623, 629, 632–633, 639, 641, 645, 649, 652, 658, 661, 663, 671, 673–675, 695, 699, 707, 712–713, 717–718, 721, 723, 728–729, 734, 742, 744, 747, 750, 752, 759, 762, 767, 773, 775–776, 779, 790, 797, 805, 810, 812, 817–818, 829, 844, 848, 850, 855, 858, 903, 913, 918, 932, 936, 939, 948, 953, 955, 960, 971, 979, 985, 995, 999 |
| Verizon | 79 | 54 | 25 | 0 | 216, 230, 236, 262, 268–269, 286, 296, 300–301, 316, 319, 347–348, 378, 391, 400, 402, 407, 410, 416, 418, 422, 434, 449–450, 457, 480, 495, 498, 500, 530, 549–550, 557, 569–570, 573, 580, 588, 590, 597, 600, 614, 618, 643, 648, 651, 670, 701, 716, 720, 725, 731–733, 736, 743, 748–749, 766, 768, 798, 806, 815, 820, 847, 909–910, 912, 915, 919–920, 938, 949, 952, 969, 986, 989 |
| Bandwidth.com | 28 | 0 | 0 | 28 | 217, 246, 261, 284, 306, 314, 355, 364, 380, 426, 451, 470, 474, 489, 497, 536, 542, 548, 558, 591, 626, 636, 644, 751, 757, 771, 856, 889 |
| Onvoy | 25 | 0 | 0 | 25 | 241, 251, 285, 307, 427, 435, 462, 504, 513–514, 518, 528, 572, 612, 631, 634, 666, 698, 703, 763, 777, 800, 830, 888, 998 |
| American Messaging | 24 | 24 | 0 | 0 | 201, 260, 325, 430, 503, 601, 606, 609, 660, 684, 691, 705, 709, 714, 754, 793, 795–796, 803, 813–814, 840, 851, 990 |
| Lumen | 22 | 0 | 22 | 0 | 228, 254, 263, 279, 281, 332, 334, 344, 346, 432, 483–484, 486, 512, 559, 586, 662, 769, 828, 859, 879, 887 |
| Paetec Itel | 15 | 0 | 15 | 0 | 242–243, 288, 305, 308–309, 312, 357, 362, 420, 444, 458, 487, 637, 827 |
| USA Mobility | 13 | 13 | 0 | 0 | 219, 238–239, 250, 276, 280, 321, 328, 376, 440, 630, 940, 958 |
| Comcast | 8 | 0 | 0 | 8 | 397, 406, 469, 635, 638, 646, 693, 784 |
| Telnet Worldwide | 6 | 0 | 6 | 0 | 453, 481, 625, 668, 672, 692 |
| Fractel | 5 | 0 | 0 | 5 | 677, 688, 900, 944, 946 |
| Peerless Network | 4 | 0 | 0 | 4 | 209, 765, 788, 992 |
| Emergency Networks | 3 | 3 | 0 | 0 | 708, 710, 787 |
| Five9 | 2 | 0 | 2 | 0 | 210, 761 |
| HD Carrier | 2 | 0 | 0 | 2 | 547, 552 |
| Ton80 Communications | 2 | 0 | 0 | 2 | 726, 746 |
| Ahoi | 1 | 0 | 1 | 0 | 313 |
| Airus Inc | 1 | 0 | 1 | 0 | 816 |
| Brightlink Communications | 1 | 0 | 0 | 1 | 385 |
| COMMIO LLC | 1 | 0 | 0 | 1 | 488 |
| Clear Rate Communications | 1 | 0 | 1 | 0 | 379 |
| Dish Wireless | 1 | 1 | 0 | 0 | 620 |
| Exiant | 1 | 0 | 0 | 1 | 464 |
| IP Horizon | 1 | 0 | 0 | 1 | 476 |
| Leap Telecom | 1 | 0 | 1 | 0 | 604 |
| Nuso | 1 | 0 | 1 | 0 | 696 |
| Skyetel | 1 | 0 | 0 | 1 | 524 |
| Voip Street | 1 | 0 | 0 | 1 | 880 |
| Vonage | 1 | 0 | 0 | 1 | 540 |
| Wavenation | 1 | 0 | 1 | 0 | 616 |
Questions developers ask
- Where is area code 313?
- Area code 313 is in Michigan, in the United States: all 782 of its exchanges on record are there. From abroad it is dialled +1 313, then the seven-digit number.
- Is a 313 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 782 exchanges on record in 313, 346 (44%) were allocated as mobile, 338 (43%) as fixed line, 85 (11%) as VoIP and 13 (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 313?
- 31 carriers hold exchanges in 313 on record; the most: AT&T (361), T-Mobile (156) and Verizon (79). 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 313 phone number?
- In E.164 a 313 number matches ^\+1313[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 (313) 555-0123. The exchange patterns on this page narrow it to the exchanges allocated as mobile, fixed line or VoIP.