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

SOWILLIMSN prefixes in area code 606

NANPA records 7 assigned NXX blocks to rate center SOWILLIMSN in area code 606, 1.1% 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. 6 holders hold those blocks, the largest being EAST KENTUCKY NETWRK, LLC DBA APPALACHIAN WIRELESS (2), BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL (1), LEVEL 3 COMMUNICATIONS, LLC - KY (1). The earliest assignment on record here is 2002-04-10 and the most recent 2008-11-13. 4 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

7 assigned blocks – 1.1% of 606
6 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
606-237 AT&T BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL – no yes
606-257 Lumen LEVEL 3 COMMUNICATIONS, LLC - KY 2002-04-10 yes yes
606-525 EAST KENTUCKY NETWRK, LLC DBA APPALACHIAN WIRELESS 2008-11-13 no yes
606-603 AT&T NEW CINGULAR WIRELESS PCS, LLC - GA 2002-06-05 yes yes
606-607 Onvoy ONVOY, LLC - KY – yes yes
606-625 EAST KENTUCKY NETWRK, LLC DBA APPALACHIAN WIRELESS 2003-04-23 no yes
606-969 INTER MOUNTAIN CABLE DBA MIKROTEC COMMUNICATIONS – 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
EAST KENTUCKY NETWRK, LLC DBA APPALACHIAN WIRELESS – 2 28.6%
BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL AT&T 1 14.3%
LEVEL 3 COMMUNICATIONS, LLC - KY Lumen 1 14.3%
NEW CINGULAR WIRELESS PCS, LLC - GA AT&T 1 14.3%
ONVOY, LLC - KY Onvoy 1 14.3%
INTER MOUNTAIN CABLE DBA MIKROTEC COMMUNICATIONS – 1 14.3%

Frequently asked

Which prefixes belong to SOWILLIMSN in area code 606?

7 blocks: 237, 257, 525, 603, 607, 625, 969. The table above gives the holder of each.

Which carriers have numbers in SOWILLIMSN?

EAST KENTUCKY NETWRK, LLC DBA APPALACHIAN WIRELESS (2 blocks), BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL (1 block), LEVEL 3 COMMUNICATIONS, LLC - KY (1 block), NEW CINGULAR WIRELESS PCS, LLC - GA (1 block), ONVOY, LLC - KY (1 block), INTER MOUNTAIN CABLE DBA MIKROTEC COMMUNICATIONS (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is SOWILLIMSN 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