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

BOYNE CITY prefixes in area code 231

NANPA records 8 assigned NXX blocks to rate center BOYNE CITY in area code 231, 1.4% of the 572 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. 6 holders hold those blocks, the largest being ONVOY, LLCV - MI (2), NEW CINGULAR WIRELESS PCS, LLC - IL (2), CENTURYLINK COMMUNICATIONS, LLC (1). The earliest assignment on record here is 2002-03-29 and the most recent 2023-07-14. 5 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

8 assigned blocks – 1.4% of 231
6 holders of record
5 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
231-244 Lumen CENTURYLINK COMMUNICATIONS, LLC 2015-08-26 yes yes
231-270 Onvoy ONVOY, LLCV - MI 2021-05-21 yes yes
231-317 Spok SPOK, INC. – no yes
231-430 Onvoy ONVOY, LLCV - MI 2023-07-14 yes yes
231-459 Windstream PAETEC ITEL, LLC 2004-01-09 yes yes
231-497 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
231-582 AT&T MICHIGAN BELL TEL CO – no yes
231-675 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2002-03-29 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
ONVOY, LLCV - MI Onvoy 2 25%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 2 25%
CENTURYLINK COMMUNICATIONS, LLC Lumen 1 12.5%
SPOK, INC. Spok 1 12.5%
PAETEC ITEL, LLC Windstream 1 12.5%
MICHIGAN BELL TEL CO AT&T 1 12.5%

Frequently asked

Which prefixes belong to BOYNE CITY in area code 231?

8 blocks: 244, 270, 317, 430, 459, 497, 582, 675. The table above gives the holder of each.

Which carriers have numbers in BOYNE CITY?

ONVOY, LLCV - MI (2 blocks), NEW CINGULAR WIRELESS PCS, LLC - IL (2 blocks), CENTURYLINK COMMUNICATIONS, LLC (1 block), SPOK, INC. (1 block), PAETEC ITEL, LLC (1 block), MICHIGAN BELL 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 BOYNE CITY 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 231

All 572 prefixes in 231