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

ONTONAGON prefixes in area code 906

NANPA records 3 assigned NXX blocks to rate center ONTONAGON 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 NEW CINGULAR WIRELESS PCS, LLC - IL (1), RANGE TELECOMMUNICATIONS (1), ONTONAGON COUNTY TEL. CO. (1). 1 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
1 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
906-390 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
906-673 RANGE TELECOMMUNICATIONS – no yes
906-884 ONTONAGON COUNTY TEL. CO. – 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
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 1 33.3%
RANGE TELECOMMUNICATIONS – 1 33.3%
ONTONAGON COUNTY TEL. CO. – 1 33.3%

Frequently asked

Which prefixes belong to ONTONAGON in area code 906?

3 blocks: 390, 673, 884. The table above gives the holder of each.

Which carriers have numbers in ONTONAGON?

NEW CINGULAR WIRELESS PCS, LLC - IL (1 block), RANGE TELECOMMUNICATIONS (1 block), ONTONAGON COUNTY TEL. CO. (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is ONTONAGON 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