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

MADISON prefixes in area code 862

NANPA records 6 assigned NXX blocks to rate center MADISON in area code 862, 1.5% of the 391 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 - NJ (2), METROPCS, INC. (1), NEW CINGULAR WIRELESS PCS, LLC - DC (1). The earliest assignment on record here is 2002-10-10 and the most recent 2026-09-09. 6 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 203, 207, 256, 304 – overlay codes cover the same geography, so a rate center is served by all of them.

6 assigned blocks – 1.5% of 862
5 holders of record
6 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
862-204 T-Mobile METROPCS, INC. 2002-10-10 yes yes
862-341 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2019-04-11 yes yes
862-431 Onvoy ONVOY, LLC - NJ 2023-09-18 yes yes
862-433 Charter ONVOY SPECTRUM, LLC 2021-04-13 yes yes
862-465 Altice CABLEVISION LIGHTPATH, INC. - NJ 2017-09-15 yes yes
862-492 Onvoy ONVOY, LLC - NJ 2026-09-09 yes no

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 - NJ Onvoy 2 33.3%
METROPCS, INC. T-Mobile 1 16.7%
NEW CINGULAR WIRELESS PCS, LLC - DC AT&T 1 16.7%
ONVOY SPECTRUM, LLC Charter 1 16.7%
CABLEVISION LIGHTPATH, INC. - NJ Altice 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 MADISON in area code 862?

6 blocks: 204, 341, 431, 433, 465, 492. The table above gives the holder of each.

Which carriers have numbers in MADISON?

ONVOY, LLC - NJ (2 blocks), METROPCS, INC. (1 block), NEW CINGULAR WIRELESS PCS, LLC - DC (1 block), ONVOY SPECTRUM, LLC (1 block), CABLEVISION LIGHTPATH, INC. - NJ (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is MADISON 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 862

All 391 prefixes in 862