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

MONROE prefixes in area code 734

NANPA records 40 assigned NXX blocks to rate center MONROE in area code 734, 5.7% of the 701 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. 15 holders hold those blocks, the largest being MICHIGAN BELL TEL CO (7), OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC (6), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI (6). The earliest assignment on record here is 2001-09-28 and the most recent 2023-06-26. 26 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 codes 207, 260, 318, 329 – overlay codes cover the same geography, so a rate center is served by all of them.

40 assigned blocks – 5.7% of 734
15 holders of record
26 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
734-227 Spok SPOK, INC. – no yes
734-230 Windstream PAETEC ITEL, LLC – yes yes
734-240 AT&T MICHIGAN BELL TEL CO – no yes
734-241 AT&T MICHIGAN BELL TEL CO – no yes
734-242 AT&T MICHIGAN BELL TEL CO – no yes
734-243 AT&T MICHIGAN BELL TEL CO – no yes
734-244 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - MI – yes yes
734-264 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI – yes yes
734-265 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI – yes yes
734-289 AT&T MICHIGAN BELL TEL CO – yes yes
734-297 American Messaging AMERICAN MESSAGING SERVICES, LLC – no yes
734-305 American Messaging AMERICAN MESSAGING SERVICES, LLC – no yes
734-322 Lumen LEVEL 3 COMMUNICATIONS, LLC - MI – yes yes
734-342 INTERACTIVE SERVICES NETWORK, INC. – no yes
734-344 Lumen LEVEL 3 COMMUNICATIONS, LLC - MI – yes yes
734-349 Windstream PAETEC ITEL, LLC – yes yes
734-384 AT&T MICHIGAN BELL TEL CO – yes yes
734-410 T-Mobile METROPCS, INC. 2018-07-13 yes yes
734-430 Bandwidth BANDWIDTH.COM CLEC, LLC - MI 2010-06-08 yes yes
734-457 AT&T MICHIGAN BELL TEL CO – no yes
734-497 T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC – yes yes
734-581 T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2021-01-19 yes yes
734-597 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 2021-11-05 yes yes
734-598 Onvoy ONVOY, LLCV - MI 2023-06-26 yes yes
734-621 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI – yes yes
734-625 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI – no yes
734-636 T-Mobile METROPCS, INC. 2011-02-21 yes yes
734-639 Windstream PAETEC ITEL, LLC – yes yes
734-652 T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC – yes yes
734-682 Charter ONVOY SPECTRUM, LLC – yes yes
734-687 INTERACTIVE SERVICES NETWORK, INC. – no yes
734-693 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
734-731 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2001-09-28 yes yes
734-735 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI – no yes
734-755 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI – no yes
734-770 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 2002-08-30 no yes
734-777 T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC – yes yes
734-790 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI – yes yes
734-819 T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2002-05-03 yes yes
734-915 T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2002-08-13 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 7 17.5%
OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC T-Mobile 6 15%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI Verizon 6 15%
PAETEC ITEL, LLC Windstream 3 7.5%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI Verizon 3 7.5%
AMERICAN MESSAGING SERVICES, LLC American Messaging 2 5%
LEVEL 3 COMMUNICATIONS, LLC - MI Lumen 2 5%
INTERACTIVE SERVICES NETWORK, INC. – 2 5%
METROPCS, INC. T-Mobile 2 5%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 2 5%
SPOK, INC. Spok 1 2.5%
TELEPORT COMMUNICATIONS AMERICA, LLC - MI AT&T 1 2.5%
BANDWIDTH.COM CLEC, LLC - MI Bandwidth 1 2.5%
ONVOY, LLCV - MI Onvoy 1 2.5%
ONVOY SPECTRUM, LLC Charter 1 2.5%

Same rate center in other codes

Overlay codes cover the same geography, so one rate center is served by all of them.

Frequently asked

Which prefixes belong to MONROE in area code 734?

40 blocks: 227, 230, 240, 241, 242, 243, 244, 264, 265, 289, 297, 305 and 28 more, all listed in the table above.

Which carriers have numbers in MONROE?

MICHIGAN BELL TEL CO (7 blocks), OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC (6 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI (6 blocks), PAETEC ITEL, LLC (3 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI (3 blocks), AMERICAN MESSAGING SERVICES, 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 MONROE 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 734

All 701 prefixes in 734