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

LIBERAL prefixes in area code 620

NANPA records 13 assigned NXX blocks to rate center LIBERAL in area code 620, 1.8% of the 705 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 SOUTHWESTERN BELL (6), NEW CINGULAR WIRELESS PCS, LLC - IL (4), LEVEL 3 COMMUNICATIONS, LLC - KS (1). The earliest assignment on record here is 2002-11-04 and the most recent 2025-01-03. 8 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 417 – overlay codes cover the same geography, so a rate center is served by all of them.

13 assigned blocks – 1.8% of 620
5 holders of record
8 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
620-309 AT&T SOUTHWESTERN BELL – yes yes
620-370 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – no yes
620-391 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
620-417 AT&T SOUTHWESTERN BELL 2007-05-23 yes yes
620-482 AT&T SOUTHWESTERN BELL – yes yes
620-556 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2021-07-27 yes yes
620-604 Lumen LEVEL 3 COMMUNICATIONS, LLC - KS – yes yes
620-621 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
620-624 AT&T SOUTHWESTERN BELL – no yes
620-626 AT&T SOUTHWESTERN BELL – no yes
620-629 AT&T SOUTHWESTERN BELL – no yes
620-655 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS 2002-11-04 no yes
620-676 Charter ONVOY SPECTRUM, LLC 2025-01-03 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
SOUTHWESTERN BELL AT&T 6 46.2%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 4 30.8%
LEVEL 3 COMMUNICATIONS, LLC - KS Lumen 1 7.7%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS Verizon 1 7.7%
ONVOY SPECTRUM, LLC Charter 1 7.7%

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 LIBERAL in area code 620?

13 blocks: 309, 370, 391, 417, 482, 556, 604, 621, 624, 626, 629, 655 and 1 more, all listed in the table above.

Which carriers have numbers in LIBERAL?

SOUTHWESTERN BELL (6 blocks), NEW CINGULAR WIRELESS PCS, LLC - IL (4 blocks), LEVEL 3 COMMUNICATIONS, LLC - KS (1 block), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS (1 block), ONVOY SPECTRUM, 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 LIBERAL 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 620

All 705 prefixes in 620