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

LIVONIA prefixes in area code 585

NANPA records 3 assigned NXX blocks to rate center LIVONIA in area code 585, 0.4% of the 676 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. 3 holders hold those blocks, the largest being FRONTIER TELEPHONE OF ROCHESTER, INC. (1), TWC IP ENABLED SERVICES, LLC (1), TON80 COMMUNICATIONS, LLC (1). The earliest assignment on record here is 2006-10-17 and the most recent 2022-01-13. 3 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 225, 734 – overlay codes cover the same geography, so a rate center is served by all of them.

3 assigned blocks – 0.4% of 585
3 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
585-346 Frontier FRONTIER TELEPHONE OF ROCHESTER, INC. – yes yes
585-572 Charter TWC IP ENABLED SERVICES, LLC 2006-10-17 yes yes
585-887 TON80 COMMUNICATIONS, LLC 2022-01-13 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 TELEPHONE OF ROCHESTER, INC. Frontier 1 33.3%
TWC IP ENABLED SERVICES, LLC Charter 1 33.3%
TON80 COMMUNICATIONS, LLC – 1 33.3%

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 LIVONIA in area code 585?

3 blocks: 346, 572, 887. The table above gives the holder of each.

Which carriers have numbers in LIVONIA?

FRONTIER TELEPHONE OF ROCHESTER, INC. (1 block), TWC IP ENABLED SERVICES, LLC (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 LIVONIA 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 585

All 676 prefixes in 585