410
Area code 410
Maryland, United States
National (410) 555-0123, E.164 +14105550123
How the 800 central office codes (exchanges) of area code 410 were allocated, from the North American Numbering Plan's records: to which carrier, as which line type. A 410 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
- MD
- Exchanges on record
- 800
- Carriers on record
- 20
- Mobile 166 (21%)
- Fixed line 610 (76%)
- VoIP 10 (1%)
- No line type on record 14 (2%)
- 800 exchanges on record
Most exchanges: Verizon 610, AT&T 66, T-Mobile 28.
Check a number
Valid fixed line or mobile number in the United States.
+1
country code
410
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 | +14105550123 |
| International | +1 410-555-0123 |
| National | (410) 555-0123 |
| RFC 3966 | tel:+1-410-555-0123 |
Source: North American Numbering Plan Administrator (NANPA); Canadian Numbering Administrator (CNAC); National numbering plan: United States (ITU)
The example is 410-555-0123: 555-0100 to 555-0199 are set aside for fictional use in every area code.
The exchange map
One cell per exchange: blocks 410 2xx to 410 9xx; in each block the row is the tens digit, the column the units digit.
- Mobile 166
- Fixed line 610
- VoIP 10
- No line type on record 14
Formats and patterns
| E.164 | +14105550123 |
|---|---|
| International | +1 410-555-0123 |
| National | (410) 555-0123 |
| RFC 3966 (tel: URI) | tel:+1-410-555-0123 |
Any 410 number, in E.164
^\+1410[2-9]\d{6}$+1, the area code, a central office code that does not start with 0 or 1, then four digits.
Mobile exchanges (166 on record)
^\+1410(?:2(?:0[25-7]|1[0258]|2[07]|3[126]|4[015]|5[1389]|62|7[0149]|83|9[249])|3(?:0[0-3]|[14]0|2[02]|3[016]|5[13]|65|7[0135]|8[029])|4(?:0[489]|1[069]|2[28]|3[04]|4[015-7]|5[689]|6[03]|7[3-58]|9[0-39])|5(?:0[07]|3[03]|62|70|9[1689])|6(?:0[378]|1[059]|27|[46]0|52|78|8[18]|9[39])|7(?:0[378]|1[048]|2[56]|3[139]|4[368]|59|90)|8(?:0[024-68]|1[26]|29|3[19]|45|52|68|9[049])|9(?:0[3589]|1[367]|2[04-6]|3[02457]|48|52|6[0137]|7[17-9]|8[04]|91))\d{4}$Fixed line exchanges (610 on record)
^\+1410(?:2(?:0[013489]|1[34679]|2[1-689]|3[03-57-9]|4[2-46-9]|5[024-7]|6[013-9]|7[235-8]|8[0-24-9]|9[0135-8])|3(?:0[4-9]|1[2-9]|2[13-9]|3[2-57-9]|4[1-9]|5[024-9]|6[0-46-9]|7[246-9]|8[13-8]|9\d)|4(?:0[0-35-7]|1[2-578]|2[013-79]|3[1-35-9]|4[2-48]|5[0-57]|6[124-9]|7[0-2679]|8\d|9[4-68])|5(?:0[1-689]|1[02-9]|[248]\d|3[124-9]|5[0-46-9]|6[013-9]|7[1-9]|9[02-57])|6(?:0[0-24-69]|1[2-46-8]|2[0-689]|3\d|[46][1-9]|5[013-9]|7[0-79]|8[02-79]|9[0-24-8])|7(?:0[12469]|1[235-79]|2[0-47-9]|3[024-8]|4[0-24579]|5[0-8]|[6-8]\d|9[1-9])|8(?:0[1379]|1[03-57-9]|2[0-578]|3[0235-8]|4[0-36-9]|5[013-9]|6[013-79]|7[1-9]|8\d|9[1-35-8])|9(?:0[0-2467]|1[024589]|2[1-378]|3[1389]|4[0-79]|5[13-7]|6[24-689]|7[02-5]|8[1-35-9]|9[02-9]))\d{4}$VoIP exchanges (10 on record)
^\+1410(?:4(?:49|97)|705|8(?:26|[34]4|62|70)|9(?:29|36))\d{4}$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 410, with the exchanges allocated to it (the three digits after the area code).
| Carrier | Exchanges | Mobile | Fixed line | VoIP | Exchanges held |
|---|---|---|---|---|---|
| Verizon | 610 | 53 | 557 | 0 | 200–204, 207–210, 213, 215–219, 221–226, 228–230, 233–235, 237–239, 241–244, 246–252, 254–257, 259–261, 263–269, 271–282, 284–291, 295–299, 303, 305–310, 312–319, 321, 323–329, 332–335, 337–339, 341–350, 352–364, 366–368, 371–372, 374–379, 381–386, 388, 391–399, 401–407, 409, 412–415, 417–418, 420–421, 424–426, 429–433, 435–439, 442, 444, 448, 450–459, 461–472, 474, 476–477, 479–490, 494–496, 502–508, 512, 514–529, 531–532, 534–554, 556–558, 560–561, 563, 566–567, 569, 571–588, 590–594, 596–598, 600–602, 604–606, 609–610, 612–614, 616–617, 620–639, 641–648, 650–651, 653–655, 657, 659, 661–677, 679, 682–688, 691–692, 694–698, 701–704, 706–709, 712, 715–716, 719–724, 726–730, 732, 734, 736–738, 740–742, 744–747, 749–758, 760–775, 777–778, 780–789, 791–793, 795–799, 800–801, 803–804, 810, 813, 815–817, 819–823, 825, 827–830, 832–833, 835–838, 840–842, 846–851, 853–861, 863–867, 869, 871–889, 891–893, 895–898, 901–902, 904, 906–907, 910, 913, 916, 918–919, 922–925, 928, 931, 933, 935, 937–939, 941–947, 949, 952–957, 960, 962, 964–966, 968–970, 974–975, 980–981, 983, 986–998 |
| AT&T | 66 | 51 | 15 | 0 | 205–206, 227, 231, 236, 245, 253, 292, 294, 302, 322, 330, 336, 340, 370, 390, 422–423, 427–428, 440–441, 446, 478, 491, 510, 513, 530, 533, 559, 562, 564, 568, 570, 599, 603, 608, 615, 649, 652, 689, 693, 714, 718, 733, 739, 759, 776, 790, 802, 812, 818, 843, 852, 868, 917, 920, 926, 934, 948, 951, 967, 971–972, 978–979 |
| T-Mobile | 28 | 28 | 0 | 0 | 212, 220, 240, 258, 262, 300–301, 320, 365, 419, 493, 499, 500, 660, 699, 710, 725, 805, 808, 831, 845, 903, 905, 908, 961, 963, 977, 984 |
| USA Mobility | 28 | 28 | 0 | 0 | 232, 283, 331, 351, 373, 389, 408, 434, 445, 447, 460, 473, 475, 492, 607, 640, 678, 681, 731, 743, 748, 806, 839, 890, 894, 899, 909, 932 |
| Lumen | 16 | 0 | 15 | 1 | 369, 443, 565, 589, 595, 680, 690, 713, 717, 779, 794, 807, 824, 834, 921, 927 |
| Paetec Itel | 12 | 0 | 12 | 0 | 293, 387, 400, 498, 501, 735, 809, 814, 900, 912, 914, 940 |
| Baltimore-Washington Telephone Company | 4 | 0 | 4 | 0 | 509, 915, 985, 999 |
| Bandwidth.com | 3 | 0 | 0 | 3 | 449, 705, 929 |
| Comcast | 3 | 0 | 0 | 3 | 497, 870, 936 |
| Redi-Call Communications | 3 | 3 | 0 | 0 | 270, 380, 930 |
| American Messaging | 2 | 2 | 0 | 0 | 416, 619 |
| IDT America | 2 | 0 | 2 | 0 | 304, 618 |
| Onvoy | 2 | 0 | 0 | 2 | 826, 862 |
| Armstrong Telecommunications | 1 | 0 | 1 | 0 | 656 |
| Armstrong Telephone Company | 1 | 0 | 1 | 0 | 658 |
| CoreTel | 1 | 0 | 1 | 0 | 214 |
| Emergency Networks | 1 | 1 | 0 | 0 | 410 |
| MCC Telephony | 1 | 0 | 1 | 0 | 973 |
| Peerless Network | 1 | 0 | 0 | 1 | 844 |
| Quantum Telecommunications | 1 | 0 | 1 | 0 | 982 |
Questions developers ask
- Where is area code 410?
- Area code 410 is in Maryland, in the United States: all 800 of its exchanges on record are there. From abroad it is dialled +1 410, then the seven-digit number.
- Is a 410 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 410, 166 (21%) were allocated as mobile, 610 (76%) as fixed line, 10 (1%) 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 410?
- 20 carriers hold exchanges in 410 on record; the most: Verizon (610), AT&T (66) and T-Mobile (28). 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 410 phone number?
- In E.164 a 410 number matches ^\+1410[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 (410) 555-0123. The exchange patterns on this page narrow it to the exchanges allocated as mobile, fixed line or VoIP.