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

IRVINE prefixes in area code 606

NANPA records 8 assigned NXX blocks to rate center IRVINE in area code 606, 1.3% of the 639 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 WINDSTREAM KENTUCKY EAST, INC. - LONDON (3), ONVOY, LLC - KY (2), PAETEC ITEL, LLC (1). The earliest assignment on record here is 2002-06-05 and the most recent 2012-01-30. 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 949 – overlay codes cover the same geography, so a rate center is served by all of them.

8 assigned blocks – 1.3% of 606
5 holders of record
5 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
606-531 Onvoy ONVOY, LLC - KY – yes yes
606-614 Windstream PAETEC ITEL, LLC 2003-06-30 yes yes
606-643 EAST KENTUCKY NETWRK, LLC DBA APPALACHIAN WIRELESS 2003-04-04 no yes
606-717 Onvoy ONVOY, LLC - KY – yes yes
606-723 Windstream WINDSTREAM KENTUCKY EAST, INC. - LONDON – no yes
606-726 Windstream WINDSTREAM KENTUCKY EAST, INC. - LONDON – no yes
606-895 Windstream WINDSTREAM KENTUCKY EAST, INC. - LONDON 2012-01-30 yes yes
606-975 AT&T NEW CINGULAR WIRELESS PCS, LLC - GA 2002-06-05 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
WINDSTREAM KENTUCKY EAST, INC. - LONDON Windstream 3 37.5%
ONVOY, LLC - KY Onvoy 2 25%
PAETEC ITEL, LLC Windstream 1 12.5%
EAST KENTUCKY NETWRK, LLC DBA APPALACHIAN WIRELESS – 1 12.5%
NEW CINGULAR WIRELESS PCS, LLC - GA AT&T 1 12.5%

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 IRVINE in area code 606?

8 blocks: 531, 614, 643, 717, 723, 726, 895, 975. The table above gives the holder of each.

Which carriers have numbers in IRVINE?

WINDSTREAM KENTUCKY EAST, INC. - LONDON (3 blocks), ONVOY, LLC - KY (2 blocks), PAETEC ITEL, LLC (1 block), EAST KENTUCKY NETWRK, LLC DBA APPALACHIAN WIRELESS (1 block), NEW CINGULAR WIRELESS PCS, LLC - GA (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is IRVINE 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 606

All 639 prefixes in 606