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

COLLEGEDL prefixes in area code 423

NANPA records 3 assigned NXX blocks to rate center COLLEGEDL in area code 423, 0.4% of the 764 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. 3 holders hold those blocks, the largest being BRIGHTSPEED OF SOUTHERN TENNESSEE, LC (1), COMCAST IP PHONE, LLC (1), METROPCS, INC. (1). The earliest assignment on record here is 2007-03-19 and the most recent 2021-12-29. 3 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

3 assigned blocks – 0.4% of 423
3 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
423-396 Brightspeed BRIGHTSPEED OF SOUTHERN TENNESSEE, LC – yes yes
423-615 Comcast COMCAST IP PHONE, LLC 2007-03-19 yes yes
423-749 T-Mobile METROPCS, INC. 2021-12-29 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
BRIGHTSPEED OF SOUTHERN TENNESSEE, LC Brightspeed 1 33.3%
COMCAST IP PHONE, LLC Comcast 1 33.3%
METROPCS, INC. T-Mobile 1 33.3%

Frequently asked

Which prefixes belong to COLLEGEDL in area code 423?

3 blocks: 396, 615, 749. The table above gives the holder of each.

Which carriers have numbers in COLLEGEDL?

BRIGHTSPEED OF SOUTHERN TENNESSEE, LC (1 block), COMCAST IP PHONE, LLC (1 block), METROPCS, INC. (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is COLLEGEDL 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 423

All 764 prefixes in 423