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

EFFINGHAM prefixes in area code 217

NANPA records 11 assigned NXX blocks to rate center EFFINGHAM in area code 217, 1.4% 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. 6 holders hold those blocks, the largest being ILLINOIS CONSOLIDATED TEL. CO. (3), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL (3), NEW CINGULAR WIRELESS PCS, LLC - IL (2). The earliest assignment on record here is 2018-01-08 and the most recent 2019-05-29. 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 447, 913 – overlay codes cover the same geography, so a rate center is served by all of them.

11 assigned blocks – 1.4% of 217
6 holders of record
7 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
217-240 T-Mobile T-MOBILE USA, INC. – yes yes
217-342 Consolidated ILLINOIS CONSOLIDATED TEL. CO. – no yes
217-343 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
217-347 Consolidated ILLINOIS CONSOLIDATED TEL. CO. – no yes
217-500 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 2018-01-08 yes yes
217-540 Consolidated ILLINOIS CONSOLIDATED TEL. CO. – no yes
217-663 T-Mobile METROPCS, INC. – yes yes
217-690 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
217-708 WABASH INDEPENDENT NETWORKS, INC DBA WABASH COMM 2019-05-29 yes yes
217-821 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL – no yes
217-994 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL – 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
ILLINOIS CONSOLIDATED TEL. CO. Consolidated 3 27.3%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL Verizon 3 27.3%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 2 18.2%
T-MOBILE USA, INC. T-Mobile 1 9.1%
METROPCS, INC. T-Mobile 1 9.1%
WABASH INDEPENDENT NETWORKS, INC DBA WABASH COMM – 1 9.1%

Frequently asked

Which prefixes belong to EFFINGHAM in area code 217?

11 blocks: 240, 342, 343, 347, 500, 540, 663, 690, 708, 821, 994. The table above gives the holder of each.

Which carriers have numbers in EFFINGHAM?

ILLINOIS CONSOLIDATED TEL. CO. (3 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL (3 blocks), NEW CINGULAR WIRELESS PCS, LLC - IL (2 blocks), T-MOBILE USA, INC. (1 block), METROPCS, INC. (1 block), WABASH INDEPENDENT NETWORKS, INC DBA WABASH COMM (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is EFFINGHAM 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