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

MILTON prefixes in area code 850

NANPA records 14 assigned NXX blocks to rate center MILTON in area code 850, 1.8% 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. 7 holders hold those blocks, the largest being BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL (4), ONVOY, LLC - FL (3), METROPCS, INC. (2). The earliest assignment on record here is 2001-03-06 and the most recent 2023-07-11. 10 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 209, 217, 272, 302 – overlay codes cover the same geography, so a rate center is served by all of them.

14 assigned blocks – 1.8% of 850
7 holders of record
10 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
850-313 T-Mobile METROPCS, INC. 2001-03-06 yes yes
850-365 Windstream PAETEC ITEL, LLC 2001-09-25 no yes
850-400 T-Mobile METROPCS, INC. 2011-08-31 yes yes
850-564 AT&T AT&T - LOCAL 2003-03-19 yes yes
850-623 AT&T BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL – no yes
850-626 AT&T BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL – no yes
850-665 Lumen LEVEL 3 COMMUNICATIONS, LLC - FL 2003-07-24 yes yes
850-715 Charter ONVOY SPECTRUM, LLC 2023-07-11 yes yes
850-750 Onvoy ONVOY, LLC - FL 2018-01-26 yes yes
850-810 Windstream PAETEC ITEL, LLC 2005-02-28 yes yes
850-979 Onvoy ONVOY, LLC - FL 2019-10-02 yes yes
850-981 AT&T BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL – yes yes
850-983 AT&T BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL – no yes
850-987 Onvoy ONVOY, LLC - FL 2021-05-12 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
BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL AT&T 4 28.6%
ONVOY, LLC - FL Onvoy 3 21.4%
METROPCS, INC. T-Mobile 2 14.3%
PAETEC ITEL, LLC Windstream 2 14.3%
AT&T - LOCAL AT&T 1 7.1%
LEVEL 3 COMMUNICATIONS, LLC - FL Lumen 1 7.1%
ONVOY SPECTRUM, LLC Charter 1 7.1%

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 MILTON in area code 850?

14 blocks: 313, 365, 400, 564, 623, 626, 665, 715, 750, 810, 979, 981 and 2 more, all listed in the table above.

Which carriers have numbers in MILTON?

BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL (4 blocks), ONVOY, LLC - FL (3 blocks), METROPCS, INC. (2 blocks), PAETEC ITEL, LLC (2 blocks), AT&T - LOCAL (1 block), LEVEL 3 COMMUNICATIONS, LLC - FL (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is MILTON 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