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

CARBONHILL prefixes in area code 205

NANPA records 6 assigned NXX blocks to rate center CARBONHILL in area code 205, 0.8% 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. 5 holders hold those blocks, the largest being BANDWIDTH.COM CLEC, LLC - AL (2), PAETEC ITEL, LLC (1), ONVOY, LLC - AL (1). The earliest assignment on record here is 2011-05-05 and the most recent 2020-03-06. 6 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 659 – overlay codes cover the same geography, so a rate center is served by all of them.

6 assigned blocks – 0.8% of 205
5 holders of record
6 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
205-549 Bandwidth BANDWIDTH.COM CLEC, LLC - AL 2011-05-05 yes yes
205-727 Windstream PAETEC ITEL, LLC – yes yes
205-751 Onvoy ONVOY, LLC - AL 2018-06-25 yes yes
205-924 AT&T BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL – yes yes
205-931 Bandwidth BANDWIDTH.COM CLEC, LLC - AL 2020-01-29 yes yes
205-947 AT&T AT&T - LOCAL 2020-03-06 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
BANDWIDTH.COM CLEC, LLC - AL Bandwidth 2 33.3%
PAETEC ITEL, LLC Windstream 1 16.7%
ONVOY, LLC - AL Onvoy 1 16.7%
BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL AT&T 1 16.7%
AT&T - LOCAL AT&T 1 16.7%

Frequently asked

Which prefixes belong to CARBONHILL in area code 205?

6 blocks: 549, 727, 751, 924, 931, 947. The table above gives the holder of each.

Which carriers have numbers in CARBONHILL?

BANDWIDTH.COM CLEC, LLC - AL (2 blocks), PAETEC ITEL, LLC (1 block), ONVOY, LLC - AL (1 block), BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL (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 CARBONHILL 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 205

All 785 prefixes in 205