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

FREESOIL prefixes in area code 231

NANPA records 3 assigned NXX blocks to rate center FREESOIL in area code 231, 0.5% 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. 3 holders hold those blocks, the largest being MICHIGAN BELL TEL CO (1), PAETEC ITEL, LLC (1), TON80 COMMUNICATIONS, LLC (1). The earliest assignment on record here is 2001-06-18 and the most recent 2022-02-22. 3 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

3 assigned blocks – 0.5% of 231
3 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
231-464 AT&T MICHIGAN BELL TEL CO – yes yes
231-790 Windstream PAETEC ITEL, LLC 2001-06-18 yes yes
231-966 TON80 COMMUNICATIONS, LLC 2022-02-22 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%
PAETEC ITEL, LLC Windstream 1 33.3%
TON80 COMMUNICATIONS, LLC – 1 33.3%

Frequently asked

Which prefixes belong to FREESOIL in area code 231?

3 blocks: 464, 790, 966. The table above gives the holder of each.

Which carriers have numbers in FREESOIL?

MICHIGAN BELL TEL CO (1 block), PAETEC ITEL, LLC (1 block), TON80 COMMUNICATIONS, LLC (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is FREESOIL 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