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

HILLSBORO prefixes in area code 701

NANPA records 5 assigned NXX blocks to rate center HILLSBORO in area code 701, 0.7% of the 743 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. 5 holders hold those blocks, the largest being NEW CINGULAR WIRELESS PCS, LLC - IL (1), MIDCONTINENT COMMUNICATIONS - ND (1), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ND (1). The earliest assignment on record here is 2003-04-10 and the most recent 2007-01-19. 4 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots. The same rate center name also appears in area codes 217, 254, 304, 319 – overlay codes cover the same geography, so a rate center is served by all of them.

5 assigned blocks – 0.7% of 701
5 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
701-289 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2003-04-10 yes yes
701-383 MIDCONTINENT COMMUNICATIONS - ND 2007-01-19 yes yes
701-430 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ND – yes yes
701-436 Lumen QWEST CORPORATION – yes yes
701-636 HALSTAD TELEPHONE COMPANY - ND – 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
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 1 20%
MIDCONTINENT COMMUNICATIONS - ND – 1 20%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ND Verizon 1 20%
QWEST CORPORATION Lumen 1 20%
HALSTAD TELEPHONE COMPANY - ND – 1 20%

Same rate center in other codes

Overlay codes cover the same geography, so one rate center is served by all of them.

Frequently asked

Which prefixes belong to HILLSBORO in area code 701?

5 blocks: 289, 383, 430, 436, 636. The table above gives the holder of each.

Which carriers have numbers in HILLSBORO?

NEW CINGULAR WIRELESS PCS, LLC - IL (1 block), MIDCONTINENT COMMUNICATIONS - ND (1 block), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ND (1 block), QWEST CORPORATION (1 block), HALSTAD TELEPHONE COMPANY - ND (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is HILLSBORO 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 701

All 743 prefixes in 701