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

HARRISON prefixes in area code 989

NANPA records 6 assigned NXX blocks to rate center HARRISON in area code 989, 0.8% of the 723 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. 4 holders hold those blocks, the largest being OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC (3), TELEPORT COMMUNICATIONS AMERICA, LLC - MI (1), MICHIGAN BELL TEL CO (1). The earliest assignment on record here is 2004-10-18 and the most recent 2021-03-01. 5 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 207, 208, 283, 308 – overlay codes cover the same geography, so a rate center is served by all of them.

6 assigned blocks – 0.8% of 989
4 holders of record
5 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
989-368 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - MI 2012-03-22 yes yes
989-371 T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2021-03-01 yes yes
989-429 T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC – yes yes
989-539 AT&T MICHIGAN BELL TEL CO – no yes
989-630 T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2006-08-16 yes yes
989-741 WINN TELEPHONE COMPANY DBA WINN TELECOM - MI 2004-10-18 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
OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC T-Mobile 3 50%
TELEPORT COMMUNICATIONS AMERICA, LLC - MI AT&T 1 16.7%
MICHIGAN BELL TEL CO AT&T 1 16.7%
WINN TELEPHONE COMPANY DBA WINN TELECOM - MI – 1 16.7%

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 HARRISON in area code 989?

6 blocks: 368, 371, 429, 539, 630, 741. The table above gives the holder of each.

Which carriers have numbers in HARRISON?

OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC (3 blocks), TELEPORT COMMUNICATIONS AMERICA, LLC - MI (1 block), MICHIGAN BELL TEL CO (1 block), WINN TELEPHONE COMPANY DBA WINN TELECOM - 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 HARRISON 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 989

All 723 prefixes in 989