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

ST MARYS prefixes in area code 419

NANPA records 4 assigned NXX blocks to rate center ST MARYS in area code 419, 0.5% of the 783 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. 4 holders hold those blocks, the largest being TSC COMMUNICATIONS, INC. - OH (1), FRONTIER NORTH, INC. - OH (1), GOLDSTAR COMMUNICATIONS, LLC - OH (1). The earliest assignment on record here is 2001-04-18 and the most recent 2002-01-10. 1 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 304, 567, 573, 582 – overlay codes cover the same geography, so a rate center is served by all of them.

4 assigned blocks – 0.5% of 419
4 holders of record
1 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
419-300 TSC COMMUNICATIONS, INC. - OH 2001-04-18 no yes
419-394 Frontier FRONTIER NORTH, INC. - OH – no yes
419-400 GOLDSTAR COMMUNICATIONS, LLC - OH 2002-01-10 no yes
419-778 T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC – 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
TSC COMMUNICATIONS, INC. - OH – 1 25%
FRONTIER NORTH, INC. - OH Frontier 1 25%
GOLDSTAR COMMUNICATIONS, LLC - OH – 1 25%
OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC T-Mobile 1 25%

Same rate center in other codes

Overlay codes cover the same geography, so one rate center is served by all of them.

Frequently asked

Which prefixes belong to ST MARYS in area code 419?

4 blocks: 300, 394, 400, 778. The table above gives the holder of each.

Which carriers have numbers in ST MARYS?

TSC COMMUNICATIONS, INC. - OH (1 block), FRONTIER NORTH, INC. - OH (1 block), GOLDSTAR COMMUNICATIONS, LLC - OH (1 block), OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, 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 ST MARYS 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 419

All 783 prefixes in 419