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

CASSOPOLIS prefixes in area code 269

NANPA records 4 assigned NXX blocks to rate center CASSOPOLIS in area code 269, 0.7% of the 545 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. 4 holders hold those blocks, the largest being NEW CINGULAR WIRELESS PCS, LLC - IL (1), LEVEL 3 COMMUNICATIONS, LLC - MI (1), FRONTIER NORTH, INC. - MI (1). The earliest assignment on record here is 2024-05-07 and the most recent 2024-05-07. 4 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

4 assigned blocks – 0.7% of 269
4 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
269-228 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
269-233 Lumen LEVEL 3 COMMUNICATIONS, LLC - MI – yes yes
269-445 Frontier FRONTIER NORTH, INC. - MI – yes yes
269-451 Charter ONVOY SPECTRUM, LLC 2024-05-07 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
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 1 25%
LEVEL 3 COMMUNICATIONS, LLC - MI Lumen 1 25%
FRONTIER NORTH, INC. - MI Frontier 1 25%
ONVOY SPECTRUM, LLC Charter 1 25%

Frequently asked

Which prefixes belong to CASSOPOLIS in area code 269?

4 blocks: 228, 233, 445, 451. The table above gives the holder of each.

Which carriers have numbers in CASSOPOLIS?

NEW CINGULAR WIRELESS PCS, LLC - IL (1 block), LEVEL 3 COMMUNICATIONS, LLC - MI (1 block), FRONTIER NORTH, INC. - MI (1 block), ONVOY SPECTRUM, 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 CASSOPOLIS 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 269

All 545 prefixes in 269