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

MOUNTUNION prefixes in area code 814

NANPA records 3 assigned NXX blocks to rate center MOUNTUNION in area code 814, 0.4% of the 784 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 VERIZON PENNSYLVANIA, INC. (2), ONVOY, LLC - PA (1). 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 code 319 – overlay codes cover the same geography, so a rate center is served by all of them.

3 assigned blocks – 0.4% of 814
2 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
814-514 Onvoy ONVOY, LLC - PA – yes yes
814-542 Verizon VERIZON PENNSYLVANIA, INC. – yes yes
814-543 Verizon VERIZON PENNSYLVANIA, INC. – 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
VERIZON PENNSYLVANIA, INC. Verizon 2 66.7%
ONVOY, LLC - PA Onvoy 1 33.3%

Frequently asked

Which prefixes belong to MOUNTUNION in area code 814?

3 blocks: 514, 542, 543. The table above gives the holder of each.

Which carriers have numbers in MOUNTUNION?

VERIZON PENNSYLVANIA, INC. (2 blocks), ONVOY, LLC - PA (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is MOUNTUNION 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 814

All 784 prefixes in 814