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

ROBINSON prefixes in area code 618

NANPA records 7 assigned NXX blocks to rate center ROBINSON in area code 618, 0.9% 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 (2), FRONTIER NORTH, INC. - IL (2), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL (2). The earliest assignment on record here is 2002-02-04 and the most recent 2010-03-23. 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 codes 701, 785 – overlay codes cover the same geography, so a rate center is served by all of them.

7 assigned blocks – 0.9% of 618
4 holders of record
5 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
618-421 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2002-02-04 yes yes
618-469 MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 2010-03-23 yes yes
618-544 Frontier FRONTIER NORTH, INC. - IL – yes yes
618-546 Frontier FRONTIER NORTH, INC. - IL – yes yes
618-553 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL – no yes
618-554 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL – yes yes
618-562 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – no 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 2 28.6%
FRONTIER NORTH, INC. - IL Frontier 2 28.6%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL Verizon 2 28.6%
MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL – 1 14.3%

Frequently asked

Which prefixes belong to ROBINSON in area code 618?

7 blocks: 421, 469, 544, 546, 553, 554, 562. The table above gives the holder of each.

Which carriers have numbers in ROBINSON?

NEW CINGULAR WIRELESS PCS, LLC - IL (2 blocks), FRONTIER NORTH, INC. - IL (2 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL (2 blocks), MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is ROBINSON 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 618

All 786 prefixes in 618