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

CHARLESTON prefixes in area code 217

NANPA records 12 assigned NXX blocks to rate center CHARLESTON in area code 217, 1.5% 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. 4 holders hold those blocks, the largest being NEW CINGULAR WIRELESS PCS, LLC - IL (4), ILLINOIS CONSOLIDATED TEL. CO. (4), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL (2). The earliest assignment on record here is 2004-08-26 and the most recent 2024-10-17. 7 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 codes 423, 447, 479, 573 – overlay codes cover the same geography, so a rate center is served by all of them.

12 assigned blocks – 1.5% of 217
4 holders of record
7 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
217-208 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL – yes yes
217-218 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2004-08-26 yes yes
217-345 Consolidated ILLINOIS CONSOLIDATED TEL. CO. – no yes
217-348 Consolidated ILLINOIS CONSOLIDATED TEL. CO. – no yes
217-389 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2024-07-23 yes yes
217-508 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2005-01-12 yes yes
217-512 T-Mobile T-MOBILE USA, INC. – yes yes
217-549 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL – no yes
217-581 Consolidated ILLINOIS CONSOLIDATED TEL. CO. – no yes
217-639 Consolidated ILLINOIS CONSOLIDATED TEL. CO. – no yes
217-758 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2024-10-17 yes yes
217-790 T-Mobile T-MOBILE USA, INC. 2017-10-10 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
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 4 33.3%
ILLINOIS CONSOLIDATED TEL. CO. Consolidated 4 33.3%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL Verizon 2 16.7%
T-MOBILE USA, INC. T-Mobile 2 16.7%

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 CHARLESTON in area code 217?

12 blocks: 208, 218, 345, 348, 389, 508, 512, 549, 581, 639, 758, 790. The table above gives the holder of each.

Which carriers have numbers in CHARLESTON?

NEW CINGULAR WIRELESS PCS, LLC - IL (4 blocks), ILLINOIS CONSOLIDATED TEL. CO. (4 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL (2 blocks), T-MOBILE USA, INC. (2 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is CHARLESTON 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 217

All 786 prefixes in 217