POLK CITY prefixes in area code 863
NANPA records 9 assigned NXX blocks to rate center POLK CITY in area code 863, 1.9% of the 472 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. 9 holders hold those blocks, the largest being ONVOY SPECTRUM, LLC (1), BOOST SUBSCRIBERCO L.L.C. (1), ONVOY, LLC - FL (1). The earliest assignment on record here is 2014-02-19 and the most recent 2025-08-14. 8 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 code 515 – 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 |
|---|---|---|---|---|
| 863-309 | Charter ONVOY SPECTRUM, LLC | 2021-10-12 | yes | yes |
| 863-392 | Dish BOOST SUBSCRIBERCO L.L.C. | 2025-08-14 | yes | yes |
| 863-563 | Onvoy ONVOY, LLC - FL | 2019-05-30 | yes | yes |
| 863-576 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - FL | – | yes | yes |
| 863-789 | FRACTEL, LLC | 2021-02-04 | yes | yes |
| 863-821 | INVOXIO INCORPORATED | – | yes | yes |
| 863-874 | Windstream PAETEC ITEL, LLC | – | yes | yes |
| 863-888 | TERRA NOVA TELECOM, INC. - FL | 2014-02-19 | yes | yes |
| 863-984 | Frontier FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA | – | 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 |
|---|---|---|---|
| ONVOY SPECTRUM, LLC | Charter | 1 | 11.1% |
| BOOST SUBSCRIBERCO L.L.C. | Dish | 1 | 11.1% |
| ONVOY, LLC - FL | Onvoy | 1 | 11.1% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - FL | AT&T | 1 | 11.1% |
| FRACTEL, LLC | – | 1 | 11.1% |
| INVOXIO INCORPORATED | – | 1 | 11.1% |
| PAETEC ITEL, LLC | Windstream | 1 | 11.1% |
| TERRA NOVA TELECOM, INC. - FL | – | 1 | 11.1% |
| FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA | Frontier | 1 | 11.1% |
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 POLK CITY in area code 863?
9 blocks: 309, 392, 563, 576, 789, 821, 874, 888, 984. The table above gives the holder of each.
Which carriers have numbers in POLK CITY?
ONVOY SPECTRUM, LLC (1 block), BOOST SUBSCRIBERCO L.L.C. (1 block), ONVOY, LLC - FL (1 block), TELEPORT COMMUNICATIONS AMERICA, LLC - FL (1 block), FRACTEL, LLC (1 block), INVOXIO INCORPORATED (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is POLK CITY 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.