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

GLADWIN prefixes in area code 989

NANPA records 11 assigned NXX blocks to rate center GLADWIN in area code 989, 1.5% 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. 5 holders hold those blocks, the largest being CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI (5), MICHIGAN BELL TEL CO (2), ONVOY, LLCV - MI (2). The earliest assignment on record here is 2001-04-27 and the most recent 2023-07-28. 6 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

11 assigned blocks – 1.5% of 989
5 holders of record
6 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
989-246 AT&T MICHIGAN BELL TEL CO – yes yes
989-256 Onvoy ONVOY, LLCV - MI – yes yes
989-329 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 2001-04-27 no yes
989-347 INTERACTIVE SERVICES NETWORK, INC. 2003-08-01 no yes
989-359 T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2010-07-07 yes yes
989-387 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 2001-04-27 no yes
989-426 AT&T MICHIGAN BELL TEL CO – no yes
989-519 Onvoy ONVOY, LLCV - MI 2023-07-28 yes yes
989-578 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI – yes yes
989-709 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 2004-08-30 yes yes
989-965 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 2001-05-02 no 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
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI Verizon 5 45.5%
MICHIGAN BELL TEL CO AT&T 2 18.2%
ONVOY, LLCV - MI Onvoy 2 18.2%
INTERACTIVE SERVICES NETWORK, INC. – 1 9.1%
OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC T-Mobile 1 9.1%

Frequently asked

Which prefixes belong to GLADWIN in area code 989?

11 blocks: 246, 256, 329, 347, 359, 387, 426, 519, 578, 709, 965. The table above gives the holder of each.

Which carriers have numbers in GLADWIN?

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI (5 blocks), MICHIGAN BELL TEL CO (2 blocks), ONVOY, LLCV - MI (2 blocks), INTERACTIVE SERVICES NETWORK, INC. (1 block), OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is GLADWIN 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