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

BLUEISLAND prefixes in area code 464

NANPA records 8 assigned NXX blocks to rate center BLUEISLAND in area code 464, 7.1% of the 112 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 ONVOY, LLC (4), NEW CINGULAR WIRELESS PCS, LLC - IL (1), T-MOBILE USA, INC. (1). The earliest assignment on record here is 2022-01-28 and the most recent 2026-01-14. 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 708 – overlay codes cover the same geography, so a rate center is served by all of them.

8 assigned blocks – 7.1% of 464
5 holders of record
8 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
464-210 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2023-01-12 yes yes
464-228 Onvoy ONVOY, LLC 2023-09-01 yes yes
464-239 T-Mobile T-MOBILE USA, INC. 2024-02-23 yes yes
464-250 Onvoy ONVOY, LLC 2024-07-05 yes yes
464-253 Onvoy ONVOY, LLC 2024-11-19 yes yes
464-262 Bandwidth BANDWIDTH.COM CLEC, LLC - IL 2025-03-10 yes yes
464-283 Onvoy ONVOY, LLC 2026-01-14 yes yes
464-733 TON80 COMMUNICATIONS, LLC 2022-01-28 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
ONVOY, LLC Onvoy 4 50%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 1 12.5%
T-MOBILE USA, INC. T-Mobile 1 12.5%
BANDWIDTH.COM CLEC, LLC - IL Bandwidth 1 12.5%
TON80 COMMUNICATIONS, LLC – 1 12.5%

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 BLUEISLAND in area code 464?

8 blocks: 210, 228, 239, 250, 253, 262, 283, 733. The table above gives the holder of each.

Which carriers have numbers in BLUEISLAND?

ONVOY, LLC (4 blocks), NEW CINGULAR WIRELESS PCS, LLC - IL (1 block), T-MOBILE USA, INC. (1 block), BANDWIDTH.COM CLEC, LLC - IL (1 block), TON80 COMMUNICATIONS, 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 BLUEISLAND 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 464

All 112 prefixes in 464