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

MOUNTANTOP prefixes in area code 570

NANPA records 7 assigned NXX blocks to rate center MOUNTANTOP in area code 570, 0.9% of the 782 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 VERIZON PENNSYLVANIA, INC. (2), SPOK, INC. (2), PAETEC ITEL, LLC (1). 4 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 272 – overlay codes cover the same geography, so a rate center is served by all of them.

7 assigned blocks – 0.9% of 570
5 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
570-261 Windstream PAETEC ITEL, LLC – yes yes
570-403 Verizon VERIZON PENNSYLVANIA, INC. – yes yes
570-474 Verizon VERIZON PENNSYLVANIA, INC. – no yes
570-475 CORE COMMUNICATIONS, INC. - PA – yes yes
570-715 CTSI, INC. - PA – yes yes
570-978 Spok SPOK, INC. – no yes
570-997 Spok SPOK, INC. – no 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 28.6%
SPOK, INC. Spok 2 28.6%
PAETEC ITEL, LLC Windstream 1 14.3%
CORE COMMUNICATIONS, INC. - PA – 1 14.3%
CTSI, INC. - PA – 1 14.3%

Frequently asked

Which prefixes belong to MOUNTANTOP in area code 570?

7 blocks: 261, 403, 474, 475, 715, 978, 997. The table above gives the holder of each.

Which carriers have numbers in MOUNTANTOP?

VERIZON PENNSYLVANIA, INC. (2 blocks), SPOK, INC. (2 blocks), PAETEC ITEL, LLC (1 block), CORE COMMUNICATIONS, INC. - PA (1 block), CTSI, INC. - 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 MOUNTANTOP 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 570

All 782 prefixes in 570