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

TROUTVILLE prefixes in area code 540

NANPA records 4 assigned NXX blocks to rate center TROUTVILLE in area code 540, 0.5% of the 786 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. 2 holders hold those blocks, the largest being LUMOS TELEPHONE OF BOTETOURT LLC (3), ONVOY, LLC - VA (1). The earliest assignment on record here is 2001-06-13 and the most recent 2021-11-10. 4 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

4 assigned blocks – 0.5% of 540
2 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
540-591 LUMOS TELEPHONE OF BOTETOURT LLC 2001-06-13 yes yes
540-963 Onvoy ONVOY, LLC - VA 2021-11-10 yes yes
540-966 LUMOS TELEPHONE OF BOTETOURT LLC – yes yes
540-992 LUMOS TELEPHONE OF BOTETOURT 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
LUMOS TELEPHONE OF BOTETOURT LLC – 3 75%
ONVOY, LLC - VA Onvoy 1 25%

Frequently asked

Which prefixes belong to TROUTVILLE in area code 540?

4 blocks: 591, 963, 966, 992. The table above gives the holder of each.

Which carriers have numbers in TROUTVILLE?

LUMOS TELEPHONE OF BOTETOURT LLC (3 blocks), ONVOY, LLC - VA (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is TROUTVILLE 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 540

All 786 prefixes in 540