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

GRACEVILLE prefixes in area code 850

NANPA records 5 assigned NXX blocks to rate center GRACEVILLE in area code 850, 0.6% 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. 4 holders hold those blocks, the largest being ONVOY, LLC - FL (2), BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL (1), LEVEL 3 COMMUNICATIONS, LLC - FL (1). The earliest assignment on record here is 2004-06-09 and the most recent 2021-05-12. 4 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 320, 448 – overlay codes cover the same geography, so a rate center is served by all of them.

5 assigned blocks – 0.6% of 850
4 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
850-263 AT&T BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL – no yes
850-299 Lumen LEVEL 3 COMMUNICATIONS, LLC - FL 2004-06-09 yes yes
850-360 AT&T AT&T - LOCAL 2004-07-01 yes yes
850-975 Onvoy ONVOY, LLC - FL 2021-05-12 yes yes
850-998 Onvoy ONVOY, LLC - FL 2019-07-12 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
ONVOY, LLC - FL Onvoy 2 40%
BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL AT&T 1 20%
LEVEL 3 COMMUNICATIONS, LLC - FL Lumen 1 20%
AT&T - LOCAL AT&T 1 20%

Frequently asked

Which prefixes belong to GRACEVILLE in area code 850?

5 blocks: 263, 299, 360, 975, 998. The table above gives the holder of each.

Which carriers have numbers in GRACEVILLE?

ONVOY, LLC - FL (2 blocks), BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL (1 block), LEVEL 3 COMMUNICATIONS, LLC - FL (1 block), AT&T - LOCAL (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is GRACEVILLE 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