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

MARINECITY prefixes in area code 810

NANPA records 9 assigned NXX blocks to rate center MARINECITY in area code 810, 1.8% 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. 7 holders hold those blocks, the largest being LEVEL 3 COMMUNICATIONS, LLC - MI (2), PAETEC ITEL, LLC (2), INTERACTIVE SERVICES NETWORK, INC. (1). The earliest assignment on record here is 2002-03-27 and the most recent 2020-09-24. 6 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

9 assigned blocks – 1.8% of 810
7 holders of record
6 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
810-400 INTERACTIVE SERVICES NETWORK, INC. 2002-03-27 no yes
810-420 Lumen LEVEL 3 COMMUNICATIONS, LLC - MI 2002-04-23 yes yes
810-426 123.NET, LLC – yes yes
810-581 Spok SPOK, INC. – no yes
810-643 Windstream PAETEC ITEL, LLC 2002-05-20 yes yes
810-676 Windstream PAETEC ITEL, LLC – yes yes
810-765 AT&T MICHIGAN BELL TEL CO – no yes
810-884 T-Mobile METROPCS, INC. 2020-09-24 yes yes
810-892 Lumen LEVEL 3 COMMUNICATIONS, 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
LEVEL 3 COMMUNICATIONS, LLC - MI Lumen 2 22.2%
PAETEC ITEL, LLC Windstream 2 22.2%
INTERACTIVE SERVICES NETWORK, INC. – 1 11.1%
123.NET, LLC – 1 11.1%
SPOK, INC. Spok 1 11.1%
MICHIGAN BELL TEL CO AT&T 1 11.1%
METROPCS, INC. T-Mobile 1 11.1%

Frequently asked

Which prefixes belong to MARINECITY in area code 810?

9 blocks: 400, 420, 426, 581, 643, 676, 765, 884, 892. The table above gives the holder of each.

Which carriers have numbers in MARINECITY?

LEVEL 3 COMMUNICATIONS, LLC - MI (2 blocks), PAETEC ITEL, LLC (2 blocks), INTERACTIVE SERVICES NETWORK, INC. (1 block), 123.NET, LLC (1 block), SPOK, INC. (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 MARINECITY 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