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

MADISON prefixes in area code 256

NANPA records 15 assigned NXX blocks to rate center MADISON in area code 256, 1.9% 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. 8 holders hold those blocks, the largest being BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL (5), PAETEC ITEL, LLC (3), NEW CINGULAR WIRELESS PCS, LLC - GA (2). The earliest assignment on record here is 2001-01-29 and the most recent 2019-08-08. 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 203, 207, 304, 315 – overlay codes cover the same geography, so a rate center is served by all of them.

15 assigned blocks – 1.9% of 256
8 holders of record
10 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
256-258 Windstream PAETEC ITEL, LLC – yes yes
256-289 T-Mobile METROPCS, INC. 2001-01-29 yes yes
256-319 Lumen CENTURYLINK COMMUNICATIONS LLC - AL – no yes
256-325 WOW! INTERNET, CABLE AND PHONE – no yes
256-461 AT&T BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL – no yes
256-464 AT&T BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL – yes yes
256-542 AT&T BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 2002-03-07 yes yes
256-617 AT&T NEW CINGULAR WIRELESS PCS, LLC - GA 2003-07-23 yes yes
256-631 AT&T NEW CINGULAR WIRELESS PCS, LLC - GA 2003-12-30 no yes
256-724 Windstream PAETEC ITEL, LLC – yes yes
256-772 AT&T BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL – no yes
256-774 AT&T BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL – yes yes
256-850 Windstream PAETEC ITEL, LLC 2003-06-06 yes yes
256-870 Onvoy ONVOY, LLC - AL 2019-08-08 yes yes
256-961 Lumen LEVEL 3 COMMUNICATIONS, LLC - AL – 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 5 33.3%
PAETEC ITEL, LLC Windstream 3 20%
NEW CINGULAR WIRELESS PCS, LLC - GA AT&T 2 13.3%
METROPCS, INC. T-Mobile 1 6.7%
CENTURYLINK COMMUNICATIONS LLC - AL Lumen 1 6.7%
WOW! INTERNET, CABLE AND PHONE – 1 6.7%
ONVOY, LLC - AL Onvoy 1 6.7%
LEVEL 3 COMMUNICATIONS, LLC - AL Lumen 1 6.7%

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 MADISON in area code 256?

15 blocks: 258, 289, 319, 325, 461, 464, 542, 617, 631, 724, 772, 774 and 3 more, all listed in the table above.

Which carriers have numbers in MADISON?

BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL (5 blocks), PAETEC ITEL, LLC (3 blocks), NEW CINGULAR WIRELESS PCS, LLC - GA (2 blocks), METROPCS, INC. (1 block), CENTURYLINK COMMUNICATIONS LLC - AL (1 block), WOW! INTERNET, CABLE AND PHONE (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is MADISON 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 256

All 786 prefixes in 256