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

HERCUMPVLY prefixes in area code 636

NANPA records 5 assigned NXX blocks to rate center HERCUMPVLY in area code 636, 1.1% of the 435 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 SOUTHWESTERN BELL (2), PAETEC ITEL, LLC (1), METROPCS, INC. (1). The earliest assignment on record here is 2014-07-03 and the most recent 2020-12-22. 5 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

5 assigned blocks – 1.1% of 636
4 holders of record
5 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
636-224 Windstream PAETEC ITEL, LLC – yes yes
636-306 T-Mobile METROPCS, INC. 2014-07-03 yes yes
636-475 AT&T SOUTHWESTERN BELL – yes yes
636-479 AT&T SOUTHWESTERN BELL – yes yes
636-837 TON80 COMMUNICATIONS, LLC 2020-12-22 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
SOUTHWESTERN BELL AT&T 2 40%
PAETEC ITEL, LLC Windstream 1 20%
METROPCS, INC. T-Mobile 1 20%
TON80 COMMUNICATIONS, LLC – 1 20%

Frequently asked

Which prefixes belong to HERCUMPVLY in area code 636?

5 blocks: 224, 306, 475, 479, 837. The table above gives the holder of each.

Which carriers have numbers in HERCUMPVLY?

SOUTHWESTERN BELL (2 blocks), PAETEC ITEL, LLC (1 block), METROPCS, INC. (1 block), TON80 COMMUNICATIONS, 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 HERCUMPVLY 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 636

All 435 prefixes in 636