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

KEWEENAW prefixes in area code 906

NANPA records 3 assigned NXX blocks to rate center KEWEENAW in area code 906, 0.8% of the 360 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 MICHIGAN BELL TEL CO (1), INTERACTIVE SERVICES NETWORK, INC. (1), ONVOY, LLCV - MI (1). 2 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

3 assigned blocks – 0.8% of 906
3 holders of record
2 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
906-289 AT&T MICHIGAN BELL TEL CO – yes yes
906-312 INTERACTIVE SERVICES NETWORK, INC. – no yes
906-331 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
MICHIGAN BELL TEL CO AT&T 1 33.3%
INTERACTIVE SERVICES NETWORK, INC. – 1 33.3%
ONVOY, LLCV - MI Onvoy 1 33.3%

Frequently asked

Which prefixes belong to KEWEENAW in area code 906?

3 blocks: 289, 312, 331. The table above gives the holder of each.

Which carriers have numbers in KEWEENAW?

MICHIGAN BELL TEL CO (1 block), INTERACTIVE SERVICES NETWORK, INC. (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 KEWEENAW 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 906

All 360 prefixes in 906