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

CENTURY prefixes in area code 850

NANPA records 6 assigned NXX blocks to rate center CENTURY in area code 850, 0.8% of the 786 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. 6 holders hold those blocks, the largest being BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL (1), SOUTHERN COMMUNICATIONS SERVICES, INC. (1), TELEPORT COMMUNICATIONS AMERICA, LLC - FL (1). The earliest assignment on record here is 2003-09-05 and the most recent 2021-02-02. 5 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 448 – overlay codes cover the same geography, so a rate center is served by all of them.

6 assigned blocks – 0.8% of 850
6 holders of record
5 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
850-256 AT&T BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL – no yes
850-366 SOUTHERN COMMUNICATIONS SERVICES, INC. 2003-09-05 yes yes
850-706 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - FL 2018-02-08 yes yes
850-724 Lumen LEVEL 3 COMMUNICATIONS, LLC - FL 2005-03-01 yes yes
850-789 Onvoy ONVOY, LLC - FL 2018-08-30 yes yes
850-949 Telnyx TELNYX LLC 2021-02-02 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
BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL AT&T 1 16.7%
SOUTHERN COMMUNICATIONS SERVICES, INC. – 1 16.7%
TELEPORT COMMUNICATIONS AMERICA, LLC - FL AT&T 1 16.7%
LEVEL 3 COMMUNICATIONS, LLC - FL Lumen 1 16.7%
ONVOY, LLC - FL Onvoy 1 16.7%
TELNYX LLC Telnyx 1 16.7%

Frequently asked

Which prefixes belong to CENTURY in area code 850?

6 blocks: 256, 366, 706, 724, 789, 949. The table above gives the holder of each.

Which carriers have numbers in CENTURY?

BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL (1 block), SOUTHERN COMMUNICATIONS SERVICES, INC. (1 block), TELEPORT COMMUNICATIONS AMERICA, LLC - FL (1 block), LEVEL 3 COMMUNICATIONS, LLC - FL (1 block), ONVOY, LLC - FL (1 block), TELNYX 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 CENTURY 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 850

All 786 prefixes in 850