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

WINCHESTER prefixes in area code 765

NANPA records 6 assigned NXX blocks to rate center WINCHESTER in area code 765, 0.8% of the 725 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 FRONTIER NORTH, INC.. - IN (2), NEW CINGULAR WIRELESS PCS, LLC - IL (1), ONVOY, LLC - IN (1). The earliest assignment on record here is 2001-05-04 and the most recent 2024-03-21. 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 217, 447, 540, 603 – overlay codes cover the same geography, so a rate center is served by all of them.

6 assigned blocks – 0.8% of 765
5 holders of record
5 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
765-241 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
765-257 Onvoy ONVOY, LLC - IN 2024-03-21 yes yes
765-305 Frontier FRONTIER NORTH, INC.. - IN 2001-05-04 yes yes
765-546 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 2002-03-26 yes yes
765-584 Frontier FRONTIER NORTH, INC.. - IN – no yes
765-595 Lumen LEVEL 3 COMMUNICATIONS, LLC - IN 2002-08-19 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.. - IN Frontier 2 33.3%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 1 16.7%
ONVOY, LLC - IN Onvoy 1 16.7%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN Verizon 1 16.7%
LEVEL 3 COMMUNICATIONS, LLC - IN Lumen 1 16.7%

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 WINCHESTER in area code 765?

6 blocks: 241, 257, 305, 546, 584, 595. The table above gives the holder of each.

Which carriers have numbers in WINCHESTER?

FRONTIER NORTH, INC.. - IN (2 blocks), NEW CINGULAR WIRELESS PCS, LLC - IL (1 block), ONVOY, LLC - IN (1 block), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN (1 block), LEVEL 3 COMMUNICATIONS, LLC - IN (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is WINCHESTER 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 765

All 725 prefixes in 765