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

STRONGSVL prefixes in area code 440

NANPA records 17 assigned NXX blocks to rate center STRONGSVL in area code 440, 2.2% of the 757 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 OHIO BELL TEL CO (5), LEVEL 3 COMMUNICATIONS, LLC - OH (3), T-MOBILE USA, INC. (2). The earliest assignment on record here is 2002-04-22 and the most recent 2021-08-03. 13 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

17 assigned blocks – 2.2% of 440
8 holders of record
13 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
440-212 T-Mobile T-MOBILE USA, INC. 2002-04-22 yes yes
440-238 AT&T OHIO BELL TEL CO – no yes
440-268 AT&T OHIO BELL TEL CO – yes yes
440-334 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2005-11-17 yes yes
440-378 Lumen LEVEL 3 COMMUNICATIONS, LLC - OH – yes yes
440-572 AT&T OHIO BELL TEL CO – no yes
440-580 Lumen LEVEL 3 COMMUNICATIONS, LLC - OH – yes yes
440-638 Lumen LEVEL 3 COMMUNICATIONS, LLC - OH – yes yes
440-656 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2020-04-09 yes yes
440-732 T-Mobile T-MOBILE USA, INC. 2014-02-04 yes yes
440-783 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - OH – yes yes
440-846 AT&T OHIO BELL TEL CO – no yes
440-870 Onvoy ONVOY, LLC - OH 2016-10-28 yes yes
440-876 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH – yes yes
440-878 AT&T OHIO BELL TEL CO – no yes
440-879 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH – yes yes
440-966 FRACTEL, LLC 2021-08-03 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
OHIO BELL TEL CO AT&T 5 29.4%
LEVEL 3 COMMUNICATIONS, LLC - OH Lumen 3 17.6%
T-MOBILE USA, INC. T-Mobile 2 11.8%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 2 11.8%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH Verizon 2 11.8%
TELEPORT COMMUNICATIONS AMERICA, LLC - OH AT&T 1 5.9%
ONVOY, LLC - OH Onvoy 1 5.9%
FRACTEL, LLC – 1 5.9%

Frequently asked

Which prefixes belong to STRONGSVL in area code 440?

17 blocks: 212, 238, 268, 334, 378, 572, 580, 638, 656, 732, 783, 846 and 5 more, all listed in the table above.

Which carriers have numbers in STRONGSVL?

OHIO BELL TEL CO (5 blocks), LEVEL 3 COMMUNICATIONS, LLC - OH (3 blocks), T-MOBILE USA, INC. (2 blocks), NEW CINGULAR WIRELESS PCS, LLC - IL (2 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH (2 blocks), TELEPORT COMMUNICATIONS AMERICA, LLC - OH (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is STRONGSVL 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 440

All 757 prefixes in 440