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

MURPHYSBO prefixes in area code 618

NANPA records 4 assigned NXX blocks to rate center MURPHYSBO in area code 618, 0.5% 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. 2 holders hold those blocks, the largest being FRONTIER NORTH, INC. - IL (3), NEW CINGULAR WIRELESS PCS, LLC - IL (1). 4 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 730 – overlay codes cover the same geography, so a rate center is served by all of them.

4 assigned blocks – 0.5% of 618
2 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
618-565 Frontier FRONTIER NORTH, INC. - IL – yes yes
618-684 Frontier FRONTIER NORTH, INC. - IL – yes yes
618-687 Frontier FRONTIER NORTH, INC. - IL – yes yes
618-924 AT&T NEW CINGULAR WIRELESS PCS, LLC - 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
FRONTIER NORTH, INC. - IL Frontier 3 75%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 1 25%

Frequently asked

Which prefixes belong to MURPHYSBO in area code 618?

4 blocks: 565, 684, 687, 924. The table above gives the holder of each.

Which carriers have numbers in MURPHYSBO?

FRONTIER NORTH, INC. - IL (3 blocks), NEW CINGULAR WIRELESS PCS, 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 MURPHYSBO 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