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

CHESTERLD prefixes in area code 440

NANPA records 6 assigned NXX blocks to rate center CHESTERLD in area code 440, 0.8% 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. 6 holders hold those blocks, the largest being TELEPORT COMMUNICATIONS AMERICA, LLC - OH (1), BANDWIDTH.COM CLEC, LLC - OH (1), LEVEL 3 COMMUNICATIONS, LLC - OH (1). The earliest assignment on record here is 2007-04-28 and the most recent 2024-02-08. 5 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

6 assigned blocks – 0.8% of 440
6 holders of record
5 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
440-490 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - OH – yes yes
440-644 Bandwidth BANDWIDTH.COM CLEC, LLC - OH 2015-04-28 yes yes
440-678 Lumen LEVEL 3 COMMUNICATIONS, LLC - OH – yes yes
440-688 Charter TWC IP ENABLED SERVICES, LLC 2007-04-28 yes yes
440-729 AT&T OHIO BELL TEL CO – no yes
440-861 IP HORIZON LLC 2024-02-08 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
TELEPORT COMMUNICATIONS AMERICA, LLC - OH AT&T 1 16.7%
BANDWIDTH.COM CLEC, LLC - OH Bandwidth 1 16.7%
LEVEL 3 COMMUNICATIONS, LLC - OH Lumen 1 16.7%
TWC IP ENABLED SERVICES, LLC Charter 1 16.7%
OHIO BELL TEL CO AT&T 1 16.7%
IP HORIZON LLC – 1 16.7%

Frequently asked

Which prefixes belong to CHESTERLD in area code 440?

6 blocks: 490, 644, 678, 688, 729, 861. The table above gives the holder of each.

Which carriers have numbers in CHESTERLD?

TELEPORT COMMUNICATIONS AMERICA, LLC - OH (1 block), BANDWIDTH.COM CLEC, LLC - OH (1 block), LEVEL 3 COMMUNICATIONS, LLC - OH (1 block), TWC IP ENABLED SERVICES, LLC (1 block), OHIO BELL TEL CO (1 block), IP HORIZON LLC (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is CHESTERLD 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