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

POTTERVL prefixes in area code 517

NANPA records 5 assigned NXX blocks to rate center POTTERVL in area code 517, 0.8% of the 616 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. 5 holders hold those blocks, the largest being ONVOY, LLCV - MI (1), LEVEL 3 COMMUNICATIONS, LLC - MI (1), NEW CINGULAR WIRELESS PCS, LLC - IL (1). The earliest assignment on record here is 2001-11-15 and the most recent 2021-10-04. 4 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

5 assigned blocks – 0.8% of 517
5 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
517-210 Onvoy ONVOY, LLCV - MI 2016-03-08 yes yes
517-224 Lumen LEVEL 3 COMMUNICATIONS, LLC - MI 2004-10-20 yes yes
517-378 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2021-10-04 yes yes
517-645 AT&T MICHIGAN BELL TEL CO – yes yes
517-965 ACD TELECOM, INC. - MI 2001-11-15 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 1 20%
LEVEL 3 COMMUNICATIONS, LLC - MI Lumen 1 20%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 1 20%
MICHIGAN BELL TEL CO AT&T 1 20%
ACD TELECOM, INC. - MI – 1 20%

Frequently asked

Which prefixes belong to POTTERVL in area code 517?

5 blocks: 210, 224, 378, 645, 965. The table above gives the holder of each.

Which carriers have numbers in POTTERVL?

ONVOY, LLCV - MI (1 block), LEVEL 3 COMMUNICATIONS, LLC - MI (1 block), NEW CINGULAR WIRELESS PCS, LLC - IL (1 block), MICHIGAN BELL TEL CO (1 block), ACD TELECOM, INC. - MI (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is POTTERVL 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 517

All 616 prefixes in 517