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

DILLWYN prefixes in area code 434

NANPA records 3 assigned NXX blocks to rate center DILLWYN in area code 434, 0.6% of the 509 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 ONVOY, LLC - VA (1), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (1), BRIGHTSPEED OF VIRGINIA, LLC (1). The earliest assignment on record here is 2011-08-10 and the most recent 2020-10-08. 2 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

3 assigned blocks – 0.6% of 434
3 holders of record
2 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
434-445 Onvoy ONVOY, LLC - VA 2020-10-08 yes yes
434-505 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC 2011-08-10 yes yes
434-983 Brightspeed BRIGHTSPEED OF VIRGINIA, LLC – no 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
ONVOY, LLC - VA Onvoy 1 33.3%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 1 33.3%
BRIGHTSPEED OF VIRGINIA, LLC Brightspeed 1 33.3%

Frequently asked

Which prefixes belong to DILLWYN in area code 434?

3 blocks: 445, 505, 983. The table above gives the holder of each.

Which carriers have numbers in DILLWYN?

ONVOY, LLC - VA (1 block), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (1 block), BRIGHTSPEED OF VIRGINIA, 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 DILLWYN 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 434

All 509 prefixes in 434