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

PORT HURON prefixes in area code 810

NANPA records 44 assigned NXX blocks to rate center PORT HURON in area code 810, 8.6% of the 509 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 (10), NEW CINGULAR WIRELESS PCS, LLC - IL (5), OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC (5). The earliest assignment on record here is 2001-01-15 and the most recent 2025-07-01. 31 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

44 assigned blocks – 8.6% of 810
15 holders of record
31 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
810-204 Onvoy ONVOY, LLCV - MI 2020-10-20 yes yes
810-205 American Messaging AMERICAN MESSAGING SERVICES, LLC – no yes
810-216 INTERACTIVE SERVICES NETWORK, INC. 2013-06-18 yes yes
810-218 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 2023-09-01 yes yes
810-242 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2017-03-20 yes yes
810-276 T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2021-11-03 yes yes
810-292 T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2011-08-30 yes yes
810-294 Bandwidth BANDWIDTH.COM CLEC, LLC - MI 2010-10-11 yes yes
810-300 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 2001-01-23 no yes
810-314 Onvoy ONVOY, LLCV - MI 2021-06-16 yes yes
810-320 Lumen LEVEL 3 COMMUNICATIONS, LLC - MI – yes yes
810-334 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – no yes
810-340 American Messaging AMERICAN MESSAGING SERVICES, LLC – no yes
810-357 T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2001-12-28 yes yes
810-363 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - MI 2019-07-29 yes yes
810-364 AT&T MICHIGAN BELL TEL CO – no yes
810-372 TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 2025-07-01 yes yes
810-385 AT&T MICHIGAN BELL TEL CO – no yes
810-388 AT&T MICHIGAN BELL TEL CO – yes yes
810-432 Bandwidth BANDWIDTH.COM CLEC, LLC - MI 2016-06-27 yes yes
810-434 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI – no yes
810-455 Windstream PAETEC ITEL, LLC – yes yes
810-479 Lumen LEVEL 3 COMMUNICATIONS, LLC - MI – yes yes
810-488 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2001-03-16 yes yes
810-531 T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2002-04-23 yes yes
810-650 T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC – yes yes
810-662 Bandwidth BANDWIDTH.COM CLEC, LLC - MI 2013-05-20 yes yes
810-689 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
810-824 Windstream PAETEC ITEL, LLC – yes yes
810-841 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
810-858 T-Mobile METROPCS, INC. – yes yes
810-887 AT&T MICHIGAN BELL TEL CO 2001-01-15 yes yes
810-937 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 2001-05-16 yes yes
810-941 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - MI – yes yes
810-956 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI – yes yes
810-958 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI – yes yes
810-966 AT&T MICHIGAN BELL TEL CO – yes yes
810-971 Spok SPOK, INC. – no yes
810-982 AT&T MICHIGAN BELL TEL CO – no yes
810-984 AT&T MICHIGAN BELL TEL CO – no yes
810-985 AT&T MICHIGAN BELL TEL CO – no yes
810-987 AT&T MICHIGAN BELL TEL CO – no yes
810-989 AT&T MICHIGAN BELL TEL CO – no yes
810-990 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - MI – 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 10 22.7%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 5 11.4%
OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC T-Mobile 5 11.4%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI Verizon 3 6.8%
BANDWIDTH.COM CLEC, LLC - MI Bandwidth 3 6.8%
TELEPORT COMMUNICATIONS AMERICA, LLC - MI AT&T 3 6.8%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI Verizon 3 6.8%
ONVOY, LLCV - MI Onvoy 2 4.5%
AMERICAN MESSAGING SERVICES, LLC American Messaging 2 4.5%
LEVEL 3 COMMUNICATIONS, LLC - MI Lumen 2 4.5%
PAETEC ITEL, LLC Windstream 2 4.5%
INTERACTIVE SERVICES NETWORK, INC. – 1 2.3%
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS TPx 1 2.3%
METROPCS, INC. T-Mobile 1 2.3%
SPOK, INC. Spok 1 2.3%

Frequently asked

Which prefixes belong to PORT HURON in area code 810?

44 blocks: 204, 205, 216, 218, 242, 276, 292, 294, 300, 314, 320, 334 and 32 more, all listed in the table above.

Which carriers have numbers in PORT HURON?

MICHIGAN BELL TEL CO (10 blocks), NEW CINGULAR WIRELESS PCS, LLC - IL (5 blocks), OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC (5 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI (3 blocks), BANDWIDTH.COM CLEC, LLC - MI (3 blocks), TELEPORT COMMUNICATIONS AMERICA, LLC - MI (3 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is PORT HURON 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 810

All 509 prefixes in 810