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

MIDDLEBURG prefixes in area code 904

NANPA records 19 assigned NXX blocks to rate center MIDDLEBURG in area code 904, 2.4% of the 785 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. 10 holders hold those blocks, the largest being METROPCS, INC. (5), BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL (4), AT&T ENTERPRISES, LLC (2). The earliest assignment on record here is 2001-02-26 and the most recent 2025-01-08. 17 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 272, 540, 570, 826 – overlay codes cover the same geography, so a rate center is served by all of them.

19 assigned blocks – 2.4% of 904
10 holders of record
17 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
904-203 AT&T AT&T ENTERPRISES, LLC 2011-09-02 yes yes
904-214 AT&T BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 2004-03-01 yes yes
904-282 AT&T BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL – no yes
904-291 AT&T BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL – no yes
904-406 Comcast COMCAST IP PHONE, LLC – yes yes
904-413 AT&T AT&T ENTERPRISES, LLC 2008-03-18 yes yes
904-505 T-Mobile METROPCS, INC. 2001-02-26 yes yes
904-526 T-Mobile METROPCS, INC. 2019-08-05 yes yes
904-589 AT&T BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 2006-03-28 yes yes
904-600 Bandwidth BANDWIDTH.COM CLEC, LLC - FL 2010-10-08 yes yes
904-606 Comcast COMCAST IP PHONE, LLC 2014-10-03 yes yes
904-734 IP HORIZON LLC 2021-09-02 yes yes
904-736 FRACTEL, LLC 2020-07-17 yes yes
904-787 T-Mobile METROPCS, INC. 2022-02-04 yes yes
904-818 COMMIO, LLC 2023-12-15 yes yes
904-843 Lumen LEVEL 3 TELECOM OF FLORIDA, LP - FL 2005-03-28 yes yes
904-848 T-Mobile METROPCS, INC. 2022-09-09 yes yes
904-872 T-Mobile METROPCS, INC. 2016-10-07 yes yes
904-936 Onvoy ONVOY, LLC - FL 2025-01-08 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
METROPCS, INC. T-Mobile 5 26.3%
BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL AT&T 4 21.1%
AT&T ENTERPRISES, LLC AT&T 2 10.5%
COMCAST IP PHONE, LLC Comcast 2 10.5%
BANDWIDTH.COM CLEC, LLC - FL Bandwidth 1 5.3%
IP HORIZON LLC – 1 5.3%
FRACTEL, LLC – 1 5.3%
COMMIO, LLC – 1 5.3%
LEVEL 3 TELECOM OF FLORIDA, LP - FL Lumen 1 5.3%
ONVOY, LLC - FL Onvoy 1 5.3%

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 MIDDLEBURG in area code 904?

19 blocks: 203, 214, 282, 291, 406, 413, 505, 526, 589, 600, 606, 734 and 7 more, all listed in the table above.

Which carriers have numbers in MIDDLEBURG?

METROPCS, INC. (5 blocks), BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL (4 blocks), AT&T ENTERPRISES, LLC (2 blocks), COMCAST IP PHONE, LLC (2 blocks), BANDWIDTH.COM CLEC, LLC - FL (1 block), IP HORIZON 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 MIDDLEBURG 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 904

All 785 prefixes in 904