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

YONGSTFNTN prefixes in area code 850

NANPA records 4 assigned NXX blocks to rate center YONGSTFNTN in area code 850, 0.5% 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 LEVEL 3 COMMUNICATIONS, LLC - FL (1), BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL (1), ONVOY, LLC - FL (1). The earliest assignment on record here is 2004-10-27 and the most recent 2020-06-04. 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 code 448 – overlay codes cover the same geography, so a rate center is served by all of them.

4 assigned blocks – 0.5% of 850
4 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
850-403 Lumen LEVEL 3 COMMUNICATIONS, LLC - FL 2004-10-27 yes yes
850-722 AT&T BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL – yes yes
850-753 Onvoy ONVOY, LLC - FL – yes yes
850-886 FRACTEL, LLC 2020-06-04 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
LEVEL 3 COMMUNICATIONS, LLC - FL Lumen 1 25%
BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL AT&T 1 25%
ONVOY, LLC - FL Onvoy 1 25%
FRACTEL, LLC – 1 25%

Frequently asked

Which prefixes belong to YONGSTFNTN in area code 850?

4 blocks: 403, 722, 753, 886. The table above gives the holder of each.

Which carriers have numbers in YONGSTFNTN?

LEVEL 3 COMMUNICATIONS, LLC - FL (1 block), BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL (1 block), ONVOY, LLC - FL (1 block), FRACTEL, 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 YONGSTFNTN 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