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

HOLDINGFD prefixes in area code 320

NANPA records 3 assigned NXX blocks to rate center HOLDINGFD in area code 320, 0.6% of the 511 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 MIDCONTINENT COMMUNICATIONS - MN (1), QWEST CORPORATION (1), FRACTEL, LLC (1). The earliest assignment on record here is 2011-09-23 and the most recent 2020-06-17. 3 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 320
3 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
320-228 MIDCONTINENT COMMUNICATIONS - MN 2011-09-23 yes yes
320-746 Lumen QWEST CORPORATION – yes yes
320-977 FRACTEL, LLC 2020-06-17 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
MIDCONTINENT COMMUNICATIONS - MN – 1 33.3%
QWEST CORPORATION Lumen 1 33.3%
FRACTEL, LLC – 1 33.3%

Frequently asked

Which prefixes belong to HOLDINGFD in area code 320?

3 blocks: 228, 746, 977. The table above gives the holder of each.

Which carriers have numbers in HOLDINGFD?

MIDCONTINENT COMMUNICATIONS - MN (1 block), QWEST CORPORATION (1 block), FRACTEL, 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 HOLDINGFD 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 320

All 511 prefixes in 320