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

NEWBALTIMR prefixes in area code 586

NANPA records 11 assigned NXX blocks to rate center NEWBALTIMR in area code 586, 2.0% of the 546 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. 8 holders hold those blocks, the largest being LEVEL 3 COMMUNICATIONS, LLC - MI (2), ONVOY, LLCV - MI (2), MICHIGAN BELL TEL CO (2). The earliest assignment on record here is 2002-03-27 and the most recent 2021-07-20. 8 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

11 assigned blocks – 2% of 586
8 holders of record
8 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
586-210 FIRST COMMUNICATIONS, LLC 2013-05-15 yes yes
586-273 Lumen LEVEL 3 COMMUNICATIONS, LLC - MI – yes yes
586-325 Onvoy ONVOY, LLCV - MI 2021-07-20 yes yes
586-330 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - MI – yes yes
586-500 Onvoy ONVOY, LLCV - MI 2019-10-10 yes yes
586-591 INTERACTIVE SERVICES NETWORK, INC. 2002-03-27 no yes
586-648 Lumen LEVEL 3 COMMUNICATIONS, LLC - MI 2002-08-28 yes yes
586-684 Windstream PAETEC ITEL, LLC – yes yes
586-716 AT&T MICHIGAN BELL TEL CO – yes yes
586-725 AT&T MICHIGAN BELL TEL CO – no yes
586-870 American Messaging AMERICAN MESSAGING SERVICES, LLC – 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
LEVEL 3 COMMUNICATIONS, LLC - MI Lumen 2 18.2%
ONVOY, LLCV - MI Onvoy 2 18.2%
MICHIGAN BELL TEL CO AT&T 2 18.2%
FIRST COMMUNICATIONS, LLC – 1 9.1%
TELEPORT COMMUNICATIONS AMERICA, LLC - MI AT&T 1 9.1%
INTERACTIVE SERVICES NETWORK, INC. – 1 9.1%
PAETEC ITEL, LLC Windstream 1 9.1%
AMERICAN MESSAGING SERVICES, LLC American Messaging 1 9.1%

Frequently asked

Which prefixes belong to NEWBALTIMR in area code 586?

11 blocks: 210, 273, 325, 330, 500, 591, 648, 684, 716, 725, 870. The table above gives the holder of each.

Which carriers have numbers in NEWBALTIMR?

LEVEL 3 COMMUNICATIONS, LLC - MI (2 blocks), ONVOY, LLCV - MI (2 blocks), MICHIGAN BELL TEL CO (2 blocks), FIRST COMMUNICATIONS, LLC (1 block), TELEPORT COMMUNICATIONS AMERICA, LLC - MI (1 block), INTERACTIVE SERVICES NETWORK, INC. (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is NEWBALTIMR 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 586

All 546 prefixes in 586