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

GLADSTONE prefixes in area code 906

NANPA records 4 assigned NXX blocks to rate center GLADSTONE in area code 906, 1.1% 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 (2), NEW CINGULAR WIRELESS PCS, LLC - IL (1), RANGE TELECOMMUNICATIONS (1). The earliest assignment on record here is 2001-04-19 and the most recent 2001-05-14. 3 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 code 434 – overlay codes cover the same geography, so a rate center is served by all of them.

4 assigned blocks – 1.1% of 906
3 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
906-420 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2001-04-19 yes yes
906-428 AT&T MICHIGAN BELL TEL CO – yes yes
906-825 AT&T MICHIGAN BELL TEL CO 2001-05-14 yes yes
906-971 RANGE TELECOMMUNICATIONS – 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
MICHIGAN BELL TEL CO AT&T 2 50%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 1 25%
RANGE TELECOMMUNICATIONS – 1 25%

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 GLADSTONE in area code 906?

4 blocks: 420, 428, 825, 971. The table above gives the holder of each.

Which carriers have numbers in GLADSTONE?

MICHIGAN BELL TEL CO (2 blocks), NEW CINGULAR WIRELESS PCS, LLC - IL (1 block), RANGE TELECOMMUNICATIONS (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is GLADSTONE 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