NumberingData
Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records

CEDAR KEYS prefixes in area code 352

NANPA records 7 assigned NXX blocks to rate center CEDAR KEYS in area code 352, 1.0% of the 711 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. 7 holders hold those blocks, the largest being TWILIO INTERNATIONAL, INC. (1), LEVEL 3 COMMUNICATIONS, LLC - FL (1), AT&T ENTERPRISES, LLC (1). The earliest assignment on record here is 2004-08-23 and the most recent 2023-08-15. 6 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

7 assigned blocks – 1% of 352
7 holders of record
6 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
352-297 Twilio TWILIO INTERNATIONAL, INC. 2023-08-15 yes yes
352-325 Lumen LEVEL 3 COMMUNICATIONS, LLC - FL 2004-08-23 yes yes
352-477 AT&T AT&T ENTERPRISES, LLC – yes yes
352-543 AT&T BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL – yes yes
352-635 Onvoy ONVOY, LLC - FL 2019-03-28 yes yes
352-784 Windstream PAETEC ITEL, LLC – no yes
352-899 FRACTEL, LLC 2021-06-23 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

HolderBrandBlocksShare here
TWILIO INTERNATIONAL, INC. Twilio 1 14.3%
LEVEL 3 COMMUNICATIONS, LLC - FL Lumen 1 14.3%
AT&T ENTERPRISES, LLC AT&T 1 14.3%
BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL AT&T 1 14.3%
ONVOY, LLC - FL Onvoy 1 14.3%
PAETEC ITEL, LLC Windstream 1 14.3%
FRACTEL, LLC – 1 14.3%

Frequently asked

Which prefixes belong to CEDAR KEYS in area code 352?

7 blocks: 297, 325, 477, 543, 635, 784, 899. The table above gives the holder of each.

Which carriers have numbers in CEDAR KEYS?

TWILIO INTERNATIONAL, INC. (1 block), LEVEL 3 COMMUNICATIONS, LLC - FL (1 block), AT&T ENTERPRISES, LLC (1 block), BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL (1 block), ONVOY, LLC - FL (1 block), PAETEC ITEL, LLC (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is CEDAR KEYS 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.

Other rate centers in 352

All 711 prefixes in 352