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

FIFE LAKE prefixes in area code 231

NANPA records 6 assigned NXX blocks to rate center FIFE LAKE in area code 231, 1.0% 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 SPOK, INC. (1), ONVOY, LLCV - MI (1), 123.NET, LLC (1). The earliest assignment on record here is 2001-08-31 and the most recent 2021-06-15. 3 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

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

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
231-204 Spok SPOK, INC. – no yes
231-294 Onvoy ONVOY, LLCV - MI 2021-06-15 yes yes
231-441 123.NET, LLC 2002-08-27 no yes
231-570 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2002-03-29 yes yes
231-764 INTERACTIVE SERVICES NETWORK, INC. 2001-08-31 no yes
231-879 AT&T MICHIGAN BELL TEL CO – 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
SPOK, INC. Spok 1 16.7%
ONVOY, LLCV - MI Onvoy 1 16.7%
123.NET, LLC – 1 16.7%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 1 16.7%
INTERACTIVE SERVICES NETWORK, INC. – 1 16.7%
MICHIGAN BELL TEL CO AT&T 1 16.7%

Frequently asked

Which prefixes belong to FIFE LAKE in area code 231?

6 blocks: 204, 294, 441, 570, 764, 879. The table above gives the holder of each.

Which carriers have numbers in FIFE LAKE?

SPOK, INC. (1 block), ONVOY, LLCV - MI (1 block), 123.NET, LLC (1 block), NEW CINGULAR WIRELESS PCS, LLC - IL (1 block), INTERACTIVE SERVICES NETWORK, INC. (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 FIFE LAKE 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