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

TRAVERSECY prefixes in area code 231

NANPA records 53 assigned NXX blocks to rate center TRAVERSECY in area code 231, 9.3% 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. 17 holders hold those blocks, the largest being MICHIGAN BELL TEL CO (13), NEW CINGULAR WIRELESS PCS, LLC - IL (10), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI (10). The earliest assignment on record here is 2001-01-09 and the most recent 2021-12-21. 24 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

53 assigned blocks – 9.3% of 231
17 holders of record
24 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
231-213 AT&T MICHIGAN BELL TEL CO 2015-03-26 yes yes
231-218 T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC – yes yes
231-252 Bandwidth BANDWIDTH.COM CLEC, LLC - MI 2016-04-18 yes yes
231-274 American Messaging AMERICAN MESSAGING SERVICES, LLC – no yes
231-313 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – no yes
231-318 Spok SPOK, INC. – no yes
231-342 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI – no yes
231-346 INTERACTIVE SERVICES NETWORK, INC. – no yes
231-357 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI – no yes
231-360 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2002-12-30 yes yes
231-392 T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2001-01-09 yes yes
231-401 PENINSULA FIBER NETWORK, LLC - MI 2021-12-21 yes yes
231-409 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – no yes
231-421 Charter CHARTER IP ENABLED SERVICES, LLC 2002-02-20 yes yes
231-454 T-Mobile METROPCS, INC. 2021-09-23 yes yes
231-463 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI – yes yes
231-486 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI – yes yes
231-492 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI – yes yes
231-493 T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2017-05-17 yes yes
231-499 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI – no yes
231-512 American Messaging AMERICAN MESSAGING SERVICES, LLC – no yes
231-534 AT&T AT&T - LOCAL 2002-10-30 yes yes
231-568 123.NET, LLC – no yes
231-590 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI – no yes
231-600 FRACTEL, LLC 2019-12-19 yes yes
231-620 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – no yes
231-631 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 2001-08-31 no yes
231-632 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – no yes
231-633 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – no yes
231-642 T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2001-04-02 yes yes
231-645 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – no yes
231-649 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 2002-07-19 no yes
231-668 Lumen LEVEL 3 COMMUNICATIONS, LLC - MI 2002-04-29 yes yes
231-709 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
231-714 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI – yes yes
231-715 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
231-735 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 2001-06-18 yes yes
231-778 123.NET, LLC 2002-08-27 no yes
231-786 FRACTEL, LLC 2021-03-24 yes yes
231-883 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – no yes
231-890 AT&T MICHIGAN BELL TEL CO – no yes
231-922 AT&T MICHIGAN BELL TEL CO – no yes
231-929 AT&T MICHIGAN BELL TEL CO – no yes
231-932 AT&T MICHIGAN BELL TEL CO – no yes
231-933 AT&T MICHIGAN BELL TEL CO – no yes
231-935 AT&T MICHIGAN BELL TEL CO – no yes
231-938 AT&T MICHIGAN BELL TEL CO – yes yes
231-941 AT&T MICHIGAN BELL TEL CO – no yes
231-943 AT&T MICHIGAN BELL TEL CO – yes yes
231-944 CYNERGYCOMM.NET, INC. - MI – yes yes
231-946 AT&T MICHIGAN BELL TEL CO – no yes
231-947 AT&T MICHIGAN BELL TEL CO – no yes
231-995 AT&T MICHIGAN BELL TEL CO – 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
MICHIGAN BELL TEL CO AT&T 13 24.5%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 10 18.9%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI Verizon 10 18.9%
OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC T-Mobile 4 7.5%
AMERICAN MESSAGING SERVICES, LLC American Messaging 2 3.8%
123.NET, LLC – 2 3.8%
FRACTEL, LLC – 2 3.8%
BANDWIDTH.COM CLEC, LLC - MI Bandwidth 1 1.9%
SPOK, INC. Spok 1 1.9%
INTERACTIVE SERVICES NETWORK, INC. – 1 1.9%
PENINSULA FIBER NETWORK, LLC - MI – 1 1.9%
CHARTER IP ENABLED SERVICES, LLC Charter 1 1.9%
METROPCS, INC. T-Mobile 1 1.9%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI Verizon 1 1.9%
AT&T - LOCAL AT&T 1 1.9%
LEVEL 3 COMMUNICATIONS, LLC - MI Lumen 1 1.9%
CYNERGYCOMM.NET, INC. - MI – 1 1.9%

Frequently asked

Which prefixes belong to TRAVERSECY in area code 231?

53 blocks: 213, 218, 252, 274, 313, 318, 342, 346, 357, 360, 392, 401 and 41 more, all listed in the table above.

Which carriers have numbers in TRAVERSECY?

MICHIGAN BELL TEL CO (13 blocks), NEW CINGULAR WIRELESS PCS, LLC - IL (10 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI (10 blocks), OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC (4 blocks), AMERICAN MESSAGING SERVICES, LLC (2 blocks), 123.NET, LLC (2 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is TRAVERSECY 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