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

UNIONDALE prefixes in area code 260

NANPA records 3 assigned NXX blocks to rate center UNIONDALE in area code 260, 0.7% of the 444 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 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN (1), FRONTIER MIDSTATES, INC. - IN (1), NEW CINGULAR WIRELESS PCS, LLC - IL (1). The earliest assignment on record here is 2002-07-08 and the most recent 2002-07-08. 3 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

3 assigned blocks – 0.7% of 260
3 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
260-227 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 2002-07-08 yes yes
260-543 Frontier FRONTIER MIDSTATES, INC. - IN – yes yes
260-995 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
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN Verizon 1 33.3%
FRONTIER MIDSTATES, INC. - IN Frontier 1 33.3%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 1 33.3%

Frequently asked

Which prefixes belong to UNIONDALE in area code 260?

3 blocks: 227, 543, 995. The table above gives the holder of each.

Which carriers have numbers in UNIONDALE?

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN (1 block), FRONTIER MIDSTATES, INC. - IN (1 block), 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 UNIONDALE 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 260

All 444 prefixes in 260