MIAMI prefixes in area code 645
NANPA records 38 assigned NXX blocks to rate center MIAMI in area code 645, 48.1% of the 79 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. 17 holders hold those blocks, the largest being NEW CINGULAR WIRELESS PCS, LLC - GA (8), ONVOY, LLC - FL (6), OMNIPOINT MIAMI E LICENSE, LLC (4). The earliest assignment on record here is 2023-10-31 and the most recent 2026-09-10. 37 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots. The same rate center name also appears in area codes 305, 539, 660, 786 – overlay codes cover the same geography, so a rate center is served by all of them.
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 645-200 | AT&T NEW CINGULAR WIRELESS PCS, LLC - GA | 2023-11-02 | yes | yes |
| 645-201 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL | 2023-12-12 | yes | yes |
| 645-202 | Onvoy ONVOY, LLC - FL | 2023-12-08 | yes | yes |
| 645-203 | EON TELECOM, INC. | 2024-01-15 | yes | yes |
| 645-204 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - FL | 2024-12-13 | yes | yes |
| 645-207 | AT&T NEW CINGULAR WIRELESS PCS, LLC - GA | 2025-03-27 | yes | yes |
| 645-208 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - FL | 2025-04-09 | yes | yes |
| 645-214 | AT&T NEW CINGULAR WIRELESS PCS, LLC - GA | 2024-03-08 | yes | yes |
| 645-215 | Onvoy ONVOY, LLC - FL | 2024-03-13 | yes | yes |
| 645-216 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL | 2024-03-15 | yes | yes |
| 645-220 | Onvoy ONVOY, LLC - FL | 2024-06-06 | yes | yes |
| 645-222 | WIDE VOICE, LLC - FL | 2023-10-31 | yes | yes |
| 645-223 | Dish BOOST SUBSCRIBERCO L.L.C. | 2024-07-15 | yes | yes |
| 645-224 | AT&T NEW CINGULAR WIRELESS PCS, LLC - GA | 2024-08-15 | yes | yes |
| 645-225 | Onvoy ONVOY, LLC - FL | 2024-08-21 | yes | yes |
| 645-226 | SHELCOMM | 2024-08-29 | no | yes |
| 645-229 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL | 2024-09-09 | yes | yes |
| 645-231 | Onvoy ONVOY, LLC - FL | 2024-09-26 | yes | yes |
| 645-232 | T-Mobile OMNIPOINT MIAMI E LICENSE, LLC | 2024-10-09 | yes | yes |
| 645-233 | Onvoy ONVOY, LLC - FL | 2025-10-03 | yes | yes |
| 645-235 | T-Mobile OMNIPOINT MIAMI E LICENSE, LLC | 2024-10-16 | yes | yes |
| 645-236 | T-Mobile OMNIPOINT MIAMI E LICENSE, LLC | 2024-10-23 | yes | yes |
| 645-240 | AT&T NEW CINGULAR WIRELESS PCS, LLC - GA | 2024-11-20 | yes | yes |
| 645-241 | T-Mobile OMNIPOINT MIAMI E LICENSE, LLC | 2024-11-27 | yes | yes |
| 645-243 | AT&T NEW CINGULAR WIRELESS PCS, LLC - GA | 2025-04-09 | yes | yes |
| 645-246 | IP HORIZON LLC | 2025-04-10 | yes | yes |
| 645-248 | AT&T NEW CINGULAR WIRELESS PCS, LLC - GA | 2025-04-25 | yes | yes |
| 645-250 | AT&T NEW CINGULAR WIRELESS PCS, LLC - GA | 2025-05-08 | yes | yes |
| 645-251 | WAVENATION, LLC | 2025-07-30 | yes | yes |
| 645-253 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 2026-03-19 | yes | yes |
| 645-333 | WIDE VOICE, LLC - FL | 2023-11-07 | yes | yes |
| 645-400 | LIVEWIRE TELECOM, LLC | 2024-05-08 | yes | yes |
| 645-444 | WIDE VOICE, LLC - FL | 2023-12-08 | yes | yes |
| 645-465 | LIVEWIRE TELECOM, LLC | 2026-03-20 | yes | yes |
| 645-587 | OPENTACT INC. | 2026-03-25 | yes | yes |
| 645-654 | Charter ONVOY SPECTRUM, LLC | 2024-11-04 | yes | yes |
| 645-880 | 8x8 8X8, INC. | 2026-09-10 | yes | no |
| 645-933 | AHOI LLC | 2026-06-08 | yes | 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 |
|---|---|---|---|
| NEW CINGULAR WIRELESS PCS, LLC - GA | AT&T | 8 | 21.1% |
| ONVOY, LLC - FL | Onvoy | 6 | 15.8% |
| OMNIPOINT MIAMI E LICENSE, LLC | T-Mobile | 4 | 10.5% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL | Verizon | 3 | 7.9% |
| WIDE VOICE, LLC - FL | – | 3 | 7.9% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - FL | AT&T | 2 | 5.3% |
| LIVEWIRE TELECOM, LLC | – | 2 | 5.3% |
| EON TELECOM, INC. | – | 1 | 2.6% |
| BOOST SUBSCRIBERCO L.L.C. | Dish | 1 | 2.6% |
| SHELCOMM | – | 1 | 2.6% |
| IP HORIZON LLC | – | 1 | 2.6% |
| WAVENATION, LLC | – | 1 | 2.6% |
| U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | TPx | 1 | 2.6% |
| OPENTACT INC. | – | 1 | 2.6% |
| ONVOY SPECTRUM, LLC | Charter | 1 | 2.6% |
| 8X8, INC. | 8x8 | 1 | 2.6% |
| AHOI LLC | – | 1 | 2.6% |
Same rate center in other codes
Overlay codes cover the same geography, so one rate center is served by all of them.
Frequently asked
Which prefixes belong to MIAMI in area code 645?
38 blocks: 200, 201, 202, 203, 204, 207, 208, 214, 215, 216, 220, 222 and 26 more, all listed in the table above.
Which carriers have numbers in MIAMI?
NEW CINGULAR WIRELESS PCS, LLC - GA (8 blocks), ONVOY, LLC - FL (6 blocks), OMNIPOINT MIAMI E LICENSE, LLC (4 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL (3 blocks), WIDE VOICE, LLC - FL (3 blocks), TELEPORT COMMUNICATIONS AMERICA, LLC - FL (2 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is MIAMI 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.