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

MT HERMON prefixes in area code 985

NANPA records 3 assigned NXX blocks to rate center MT HERMON in area code 985, 0.7% of the 447 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. 2 holders hold those blocks, the largest being ONVOY, LLC - LA (2), BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL (1). The earliest assignment on record here is 2016-03-22 and the most recent 2021-01-29. 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 985
2 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
985-239 Onvoy ONVOY, LLC - LA 2016-03-22 yes yes
985-344 Onvoy ONVOY, LLC - LA 2021-01-29 yes yes
985-877 AT&T BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL – 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 - LA Onvoy 2 66.7%
BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL AT&T 1 33.3%

Frequently asked

Which prefixes belong to MT HERMON in area code 985?

3 blocks: 239, 344, 877. The table above gives the holder of each.

Which carriers have numbers in MT HERMON?

ONVOY, LLC - LA (2 blocks), BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is MT HERMON 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 985

All 447 prefixes in 985