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

GLEN ROCK prefixes in area code 717

NANPA records 4 assigned NXX blocks to rate center GLEN ROCK in area code 717, 0.5% 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. 3 holders hold those blocks, the largest being VERIZON NORTH, INC. - PA (2), LEVEL 3 COMMUNICATIONS, LLC - PA (1), COMCAST IP PHONE, LLC (1). The earliest assignment on record here is 2011-10-11 and the most recent 2011-10-11. 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 223 – overlay codes cover the same geography, so a rate center is served by all of them.

4 assigned blocks – 0.5% of 717
3 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
717-227 Verizon VERIZON NORTH, INC. - PA – yes yes
717-235 Verizon VERIZON NORTH, INC. - PA – no yes
717-759 Lumen LEVEL 3 COMMUNICATIONS, LLC - PA – yes yes
717-942 Comcast COMCAST IP PHONE, LLC 2011-10-11 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 NORTH, INC. - PA Verizon 2 50%
LEVEL 3 COMMUNICATIONS, LLC - PA Lumen 1 25%
COMCAST IP PHONE, LLC Comcast 1 25%

Frequently asked

Which prefixes belong to GLEN ROCK in area code 717?

4 blocks: 227, 235, 759, 942. The table above gives the holder of each.

Which carriers have numbers in GLEN ROCK?

VERIZON NORTH, INC. - PA (2 blocks), LEVEL 3 COMMUNICATIONS, LLC - PA (1 block), COMCAST IP PHONE, LLC (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is GLEN ROCK 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 717

All 784 prefixes in 717