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

ST THOMAS prefixes in area code 717

NANPA records 3 assigned NXX blocks to rate center ST THOMAS in area code 717, 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. 3 holders hold those blocks, the largest being BRIGHTSPEED OF PENNSYLVANIA, LLC (1), COMCAST IP PHONE, LLC (1), CORE COMMUNICATIONS, INC. - PA (1). The earliest assignment on record here is 2006-06-27 and the most recent 2009-03-18. 2 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 223, 573, 701 – overlay codes cover the same geography, so a rate center is served by all of them.

3 assigned blocks – 0.4% of 717
3 holders of record
2 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
717-369 Brightspeed BRIGHTSPEED OF PENNSYLVANIA, LLC – yes yes
717-595 Comcast COMCAST IP PHONE, LLC 2006-06-27 no yes
717-748 CORE COMMUNICATIONS, INC. - PA 2009-03-18 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
BRIGHTSPEED OF PENNSYLVANIA, LLC Brightspeed 1 33.3%
COMCAST IP PHONE, LLC Comcast 1 33.3%
CORE COMMUNICATIONS, INC. - PA – 1 33.3%

Frequently asked

Which prefixes belong to ST THOMAS in area code 717?

3 blocks: 369, 595, 748. The table above gives the holder of each.

Which carriers have numbers in ST THOMAS?

BRIGHTSPEED OF PENNSYLVANIA, LLC (1 block), COMCAST IP PHONE, LLC (1 block), CORE COMMUNICATIONS, 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 ST THOMAS 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