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

DRESDEN prefixes in area code 740

NANPA records 5 assigned NXX blocks to rate center DRESDEN in area code 740, 0.6% of the 786 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. 5 holders hold those blocks, the largest being ONVOY, LLC - OH (1), PAETEC ITEL, LLC (1), NEW CINGULAR WIRELESS PCS, LLC - IL (1). The earliest assignment on record here is 2002-04-23 and the most recent 2023-12-27. 5 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots. The same rate center name also appears in area code 731 – overlay codes cover the same geography, so a rate center is served by all of them.

5 assigned blocks – 0.6% of 740
5 holders of record
5 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
740-518 Onvoy ONVOY, LLC - OH 2002-04-23 yes yes
740-521 Windstream PAETEC ITEL, LLC 2004-03-05 yes yes
740-565 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2004-03-17 yes yes
740-754 AT&T OHIO BELL TEL CO – yes yes
740-905 FIVE9, INC. 2023-12-27 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
ONVOY, LLC - OH Onvoy 1 20%
PAETEC ITEL, LLC Windstream 1 20%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 1 20%
OHIO BELL TEL CO AT&T 1 20%
FIVE9, INC. – 1 20%

Same rate center in other codes

Overlay codes cover the same geography, so one rate center is served by all of them.

Frequently asked

Which prefixes belong to DRESDEN in area code 740?

5 blocks: 518, 521, 565, 754, 905. The table above gives the holder of each.

Which carriers have numbers in DRESDEN?

ONVOY, LLC - OH (1 block), PAETEC ITEL, LLC (1 block), NEW CINGULAR WIRELESS PCS, LLC - IL (1 block), OHIO BELL TEL CO (1 block), FIVE9, 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 DRESDEN 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 740

All 786 prefixes in 740