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

MORLEY prefixes in area code 231

NANPA records 6 assigned NXX blocks to rate center MORLEY 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 NEW CINGULAR WIRELESS PCS, LLC - IL (1), INTERACTIVE SERVICES NETWORK, INC. (1), 123.NET, LLC (1). The earliest assignment on record here is 2001-05-18 and the most recent 2002-08-27. 5 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots. The same rate center name also appears in area code 319 – overlay codes cover the same geography, so a rate center is served by all of them.

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

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
231-307 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
231-361 INTERACTIVE SERVICES NETWORK, INC. – no yes
231-643 123.NET, LLC 2002-08-27 yes yes
231-732 Charter ONVOY SPECTRUM, LLC – yes yes
231-803 Lumen LEVEL 3 COMMUNICATIONS, LLC - MI 2001-05-18 yes yes
231-856 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
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 1 16.7%
INTERACTIVE SERVICES NETWORK, INC. – 1 16.7%
123.NET, LLC – 1 16.7%
ONVOY SPECTRUM, LLC Charter 1 16.7%
LEVEL 3 COMMUNICATIONS, LLC - MI Lumen 1 16.7%
MICHIGAN BELL TEL CO AT&T 1 16.7%

Frequently asked

Which prefixes belong to MORLEY in area code 231?

6 blocks: 307, 361, 643, 732, 803, 856. The table above gives the holder of each.

Which carriers have numbers in MORLEY?

NEW CINGULAR WIRELESS PCS, LLC - IL (1 block), INTERACTIVE SERVICES NETWORK, INC. (1 block), 123.NET, LLC (1 block), ONVOY SPECTRUM, LLC (1 block), LEVEL 3 COMMUNICATIONS, LLC - MI (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 MORLEY 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