Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records
ANN ARBOR prefixes in area code 734
NANPA records 133 assigned NXX blocks to rate center ANN ARBOR in area code 734, 19.0% of the 701 blocks assigned in the code. A rate center is the billing geography a block is allocated to – NANPA truncates the name to ten characters, so read it as a NANPA label rather than a town. 21 holders hold those blocks, the largest being MICHIGAN BELL TEL CO (38), OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC (19), NEW CINGULAR WIRELESS PCS, LLC - IL (15). The earliest assignment on record here is 2001-03-13 and the most recent 2025-11-14. 77 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.
133 assigned blocks – 19% of 734
21 holders of record
77 of them pooled in 1,000-number lots
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 734-205 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | – | yes | yes |
| 734-210 | Bandwidth BANDWIDTH.COM CLEC, LLC - MI | 2018-03-05 | yes | yes |
| 734-213 | AT&T MICHIGAN BELL TEL CO | – | no | yes |
| 734-214 | AT&T MICHIGAN BELL TEL CO | – | no | yes |
| 734-216 | T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | – | yes | yes |
| 734-222 | AT&T MICHIGAN BELL TEL CO | – | no | yes |
| 734-223 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 734-232 | AT&T MICHIGAN BELL TEL CO | 2004-05-28 | yes | yes |
| 734-239 | Lumen LEVEL 3 COMMUNICATIONS, LLC - MI | – | yes | yes |
| 734-249 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 2012-09-09 | yes | yes |
| 734-251 | Onvoy ONVOY, LLCV - MI | 2023-07-26 | yes | yes |
| 734-255 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | – | no | yes |
| 734-260 | T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | – | yes | yes |
| 734-263 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2015-09-14 | yes | yes |
| 734-272 | Lumen LEVEL 3 COMMUNICATIONS, LLC - MI | – | yes | yes |
| 734-274 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | yes | yes |
| 734-276 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 734-277 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | yes | yes |
| 734-302 | AT&T MICHIGAN BELL TEL CO | – | yes | yes |
| 734-320 | T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | – | yes | yes |
| 734-323 | T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | – | yes | yes |
| 734-327 | AT&T MICHIGAN BELL TEL CO | – | no | yes |
| 734-330 | T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | – | yes | yes |
| 734-332 | AT&T MICHIGAN BELL TEL CO | – | yes | yes |
| 734-352 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | – | yes | yes |
| 734-353 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | yes | yes |
| 734-355 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 734-356 | FRACTEL, LLC | 2020-02-19 | yes | yes |
| 734-358 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 734-368 | T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | – | yes | yes |
| 734-369 | Comcast COMCAST IP PHONE, LLC | – | yes | yes |
| 734-372 | INTERACTIVE SERVICES NETWORK, INC. | – | no | yes |
| 734-373 | T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2018-10-19 | yes | yes |
| 734-389 | Windstream PAETEC ITEL, LLC | – | yes | yes |
| 734-395 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | – | no | yes |
| 734-412 | Vonage VONAGE AMERICA LLC | 2018-11-30 | yes | yes |
| 734-417 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | – | no | yes |
| 734-418 | Lumen LEVEL 3 COMMUNICATIONS, LLC - MI | 2015-02-04 | yes | yes |
| 734-436 | Peerless PEERLESS NETWORK OF MICHIGAN, LLC - MI | – | yes | yes |
| 734-450 | T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2018-10-19 | yes | yes |
| 734-465 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2024-02-07 | yes | yes |
| 734-473 | Spok SPOK, INC. | – | no | yes |
| 734-474 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | – | no | yes |
| 734-476 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | – | no | yes |
| 734-477 | AT&T MICHIGAN BELL TEL CO | – | no | yes |
| 734-478 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | – | no | yes |
| 734-489 | Windstream PAETEC ITEL, LLC | – | yes | yes |
| 734-492 | Bandwidth BANDWIDTH.COM CLEC, LLC - MI | 2019-05-23 | yes | yes |
| 734-496 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 2020-11-09 | yes | yes |
| 734-509 | Spok SPOK, INC. | – | no | yes |
| 734-510 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - MI | 2021-02-28 | yes | yes |
| 734-519 | Bandwidth BANDWIDTH.COM CLEC, LLC - MI | 2020-06-02 | yes | yes |
| 734-527 | INTERACTIVE SERVICES NETWORK, INC. | – | no | yes |
| 734-531 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | – | yes | yes |
| 734-539 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - MI | 2018-03-06 | yes | yes |
| 734-545 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | yes | yes |
| 734-546 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 734-548 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | yes | yes |
| 734-565 | AT&T MICHIGAN BELL TEL CO | 2002-02-04 | no | yes |
| 734-585 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | – | yes | yes |
| 734-590 | Onvoy ONVOY, LLCV - MI | 2022-11-23 | yes | yes |
| 734-596 | T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2021-09-16 | yes | yes |
| 734-604 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 734-615 | AT&T MICHIGAN BELL TEL CO | – | no | yes |
| 734-619 | AT&T MICHIGAN BELL TEL CO | 2006-02-01 | yes | yes |
| 734-622 | AT&T MICHIGAN BELL TEL CO | – | no | yes |
| 734-623 | AT&T MICHIGAN BELL TEL CO | – | yes | yes |
| 734-630 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - MI | 2025-11-14 | yes | yes |
| 734-645 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | – | no | yes |
| 734-646 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | – | no | yes |
| 734-647 | AT&T MICHIGAN BELL TEL CO | – | no | yes |
| 734-649 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | – | no | yes |
| 734-651 | American Messaging AMERICAN MESSAGING SERVICES, LLC | – | no | yes |
| 734-657 | T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | – | yes | yes |
| 734-660 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | – | no | yes |
| 734-661 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | – | yes | yes |
| 734-662 | AT&T MICHIGAN BELL TEL CO | – | no | yes |
| 734-663 | AT&T MICHIGAN BELL TEL CO | – | no | yes |
| 734-665 | AT&T MICHIGAN BELL TEL CO | – | no | yes |
| 734-668 | AT&T MICHIGAN BELL TEL CO | – | no | yes |
| 734-669 | AT&T MICHIGAN BELL TEL CO | – | yes | yes |
| 734-670 | American Messaging AMERICAN MESSAGING SERVICES, LLC | – | no | yes |
| 734-677 | AT&T MICHIGAN BELL TEL CO | – | no | yes |
| 734-678 | T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | – | yes | yes |
| 734-680 | T-Mobile METROPCS, INC. | – | yes | yes |
| 734-686 | ACD TELECOM, INC. - MI | 2005-03-28 | yes | yes |
| 734-707 | Onvoy ONVOY, LLCV - MI | 2010-12-21 | yes | yes |
| 734-709 | T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2002-09-19 | yes | yes |
| 734-717 | T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | – | yes | yes |
| 734-730 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | – | no | yes |
| 734-741 | AT&T MICHIGAN BELL TEL CO | – | yes | yes |
| 734-747 | AT&T MICHIGAN BELL TEL CO | – | yes | yes |
| 734-757 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - MI | – | yes | yes |
| 734-761 | AT&T MICHIGAN BELL TEL CO | – | no | yes |
| 734-763 | AT&T MICHIGAN BELL TEL CO | – | no | yes |
| 734-764 | AT&T MICHIGAN BELL TEL CO | – | no | yes |
| 734-768 | TON80 COMMUNICATIONS, LLC | 2021-12-22 | yes | yes |
| 734-769 | AT&T MICHIGAN BELL TEL CO | – | no | yes |
| 734-773 | T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2015-09-03 | yes | yes |
| 734-780 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - MI | – | yes | yes |
| 734-786 | Lumen LEVEL 3 COMMUNICATIONS, LLC - MI | – | no | yes |
| 734-794 | Windstream PAETEC ITEL, LLC | – | yes | yes |
| 734-800 | Onvoy ONVOY, LLCV - MI | 2015-09-28 | yes | yes |
| 734-803 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - MI | 2020-01-15 | yes | yes |
| 734-817 | American Messaging AMERICAN MESSAGING SERVICES, LLC | – | no | yes |
| 734-821 | Onvoy ONVOY, LLCV - MI | – | no | yes |
| 734-822 | Onvoy ONVOY, LLCV - MI | – | no | yes |
| 734-827 | AT&T MICHIGAN BELL TEL CO | – | yes | yes |
| 734-834 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2001-05-14 | no | yes |
| 734-845 | T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2001-05-18 | yes | yes |
| 734-846 | T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | – | no | yes |
| 734-864 | Lumen LEVEL 3 COMMUNICATIONS, LLC - MI | – | yes | yes |
| 734-881 | GRID 4 COMMUNICATIONS, INC. - MI | 2015-02-25 | yes | yes |
| 734-882 | Comcast COMCAST IP PHONE, LLC | 2015-09-04 | yes | yes |
| 734-883 | T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2001-03-13 | yes | yes |
| 734-887 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - MI | – | yes | yes |
| 734-904 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | – | no | yes |
| 734-913 | AT&T MICHIGAN BELL TEL CO | – | yes | yes |
| 734-922 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | – | yes | yes |
| 734-926 | Bandwidth BANDWIDTH.COM CLEC, LLC - MI | – | yes | yes |
| 734-929 | Comcast COMCAST IP PHONE, LLC | – | yes | yes |
| 734-930 | AT&T MICHIGAN BELL TEL CO | – | no | yes |
| 734-936 | AT&T MICHIGAN BELL TEL CO | – | no | yes |
| 734-945 | T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | – | yes | yes |
| 734-971 | AT&T MICHIGAN BELL TEL CO | – | no | yes |
| 734-972 | T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | – | yes | yes |
| 734-973 | AT&T MICHIGAN BELL TEL CO | – | no | yes |
| 734-975 | AT&T MICHIGAN BELL TEL CO | – | no | yes |
| 734-994 | AT&T MICHIGAN BELL TEL CO | – | no | yes |
| 734-995 | AT&T MICHIGAN BELL TEL CO | – | no | yes |
| 734-996 | AT&T MICHIGAN BELL TEL CO | – | yes | yes |
| 734-997 | AT&T MICHIGAN BELL TEL CO | – | yes | yes |
| 734-998 | AT&T MICHIGAN BELL TEL CO | – | no | yes |
The holder is who received the block from the numbering administrator. It is not necessarily the carrier serving a given number: numbers move with their owners, and a pooled block is shared.
Who holds the blocks
| Holder | Brand | Blocks | Share here |
|---|---|---|---|
| MICHIGAN BELL TEL CO | AT&T | 38 | 28.6% |
| OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | T-Mobile | 19 | 14.3% |
| NEW CINGULAR WIRELESS PCS, LLC - IL | AT&T | 15 | 11.3% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | Verizon | 13 | 9.8% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - MI | AT&T | 7 | 5.3% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | Verizon | 6 | 4.5% |
| ONVOY, LLCV - MI | Onvoy | 6 | 4.5% |
| LEVEL 3 COMMUNICATIONS, LLC - MI | Lumen | 5 | 3.8% |
| BANDWIDTH.COM CLEC, LLC - MI | Bandwidth | 4 | 3% |
| COMCAST IP PHONE, LLC | Comcast | 3 | 2.3% |
| PAETEC ITEL, LLC | Windstream | 3 | 2.3% |
| AMERICAN MESSAGING SERVICES, LLC | American Messaging | 3 | 2.3% |
| INTERACTIVE SERVICES NETWORK, INC. | – | 2 | 1.5% |
| SPOK, INC. | Spok | 2 | 1.5% |
| FRACTEL, LLC | – | 1 | 0.8% |
| VONAGE AMERICA LLC | Vonage | 1 | 0.8% |
| PEERLESS NETWORK OF MICHIGAN, LLC - MI | Peerless | 1 | 0.8% |
| METROPCS, INC. | T-Mobile | 1 | 0.8% |
| ACD TELECOM, INC. - MI | – | 1 | 0.8% |
| TON80 COMMUNICATIONS, LLC | – | 1 | 0.8% |
| GRID 4 COMMUNICATIONS, INC. - MI | – | 1 | 0.8% |
Frequently asked
Which prefixes belong to ANN ARBOR in area code 734?
133 blocks: 205, 210, 213, 214, 216, 222, 223, 232, 239, 249, 251, 255 and 121 more, all listed in the table above.
Which carriers have numbers in ANN ARBOR?
MICHIGAN BELL TEL CO (38 blocks), OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC (19 blocks), NEW CINGULAR WIRELESS PCS, LLC - IL (15 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI (13 blocks), TELEPORT COMMUNICATIONS AMERICA, LLC - MI (7 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI (6 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is ANN ARBOR a city?
It is a rate center – the unit NANPA allocates number blocks to. Its name is abbreviated to ten characters and is not necessarily a settlement: we print it as recorded rather than guess at the full name.