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

EASTJORDAN prefixes in area code 231

NANPA records 5 assigned NXX blocks to rate center EASTJORDAN in area code 231, 0.9% of the 572 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 LEVEL 3 COMMUNICATIONS, LLC - MI (1), BANDWIDTH.COM CLEC, LLC - MI (1), TELEPORT COMMUNICATIONS AMERICA, LLC - MI (1). The earliest assignment on record here is 2002-04-04 and the most recent 2013-08-07. 4 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

5 assigned blocks – 0.9% of 231
5 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
231-222 Lumen LEVEL 3 COMMUNICATIONS, LLC - MI 2002-04-04 yes yes
231-323 Bandwidth BANDWIDTH.COM CLEC, LLC - MI – no yes
231-484 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - MI 2013-08-07 yes yes
231-536 AT&T MICHIGAN BELL TEL CO – yes yes
231-831 Onvoy ONVOY, LLCV - MI – 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
LEVEL 3 COMMUNICATIONS, LLC - MI Lumen 1 20%
BANDWIDTH.COM CLEC, LLC - MI Bandwidth 1 20%
TELEPORT COMMUNICATIONS AMERICA, LLC - MI AT&T 1 20%
MICHIGAN BELL TEL CO AT&T 1 20%
ONVOY, LLCV - MI Onvoy 1 20%

Frequently asked

Which prefixes belong to EASTJORDAN in area code 231?

5 blocks: 222, 323, 484, 536, 831. The table above gives the holder of each.

Which carriers have numbers in EASTJORDAN?

LEVEL 3 COMMUNICATIONS, LLC - MI (1 block), BANDWIDTH.COM CLEC, LLC - MI (1 block), TELEPORT COMMUNICATIONS AMERICA, LLC - MI (1 block), MICHIGAN BELL TEL CO (1 block), ONVOY, LLCV - MI (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is EASTJORDAN 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 231

All 572 prefixes in 231