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

BULLHDCYN prefixes in area code 928

NANPA records 4 assigned NXX blocks to rate center BULLHDCYN in area code 928, 0.6% of the 637 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 CSC VOICE, LLC (1), FRACTEL, LLC (1), CITIZENS UTILITIES RURAL DBA FRONTIER UT RURAL (1). The earliest assignment on record here is 2020-09-24 and the most recent 2022-01-14. 4 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

4 assigned blocks – 0.6% of 928
4 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
928-404 CSC VOICE, LLC – yes yes
928-465 FRACTEL, LLC 2020-09-24 yes yes
928-754 Frontier CITIZENS UTILITIES RURAL DBA FRONTIER UT RURAL – yes yes
928-872 TON80 COMMUNICATIONS, LLC 2022-01-14 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
CSC VOICE, LLC – 1 25%
FRACTEL, LLC – 1 25%
CITIZENS UTILITIES RURAL DBA FRONTIER UT RURAL Frontier 1 25%
TON80 COMMUNICATIONS, LLC – 1 25%

Frequently asked

Which prefixes belong to BULLHDCYN in area code 928?

4 blocks: 404, 465, 754, 872. The table above gives the holder of each.

Which carriers have numbers in BULLHDCYN?

CSC VOICE, LLC (1 block), FRACTEL, LLC (1 block), CITIZENS UTILITIES RURAL DBA FRONTIER UT RURAL (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 BULLHDCYN 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 928

All 637 prefixes in 928