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

CORTEZ prefixes in area code 970

NANPA records 10 assigned NXX blocks to rate center CORTEZ in area code 970, 1.3% 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. 7 holders hold those blocks, the largest being QWEST CORPORATION (3), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO (2), ONVOY, LLC - CO (1). The earliest assignment on record here is 2001-05-14 and the most recent 2024-11-20. 9 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

10 assigned blocks – 1.3% of 970
7 holders of record
9 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
970-299 Onvoy ONVOY, LLC - CO 2001-05-14 yes yes
970-516 FARMERS TELECOMMUNICATIONS, INC. - CO 2010-09-01 yes yes
970-529 Lumen QWEST CORPORATION – yes yes
970-560 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO – yes yes
970-564 Lumen QWEST CORPORATION – yes yes
970-565 Lumen QWEST CORPORATION – no yes
970-570 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO – yes yes
970-739 AT&T NEW CINGULAR WIRELESS PCS, LLC – yes yes
970-816 T-Mobile T-MOBILE USA, INC. 2016-12-07 yes yes
970-912 TDS TDS BROADBAND SERVICE LLC 2024-11-20 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
QWEST CORPORATION Lumen 3 30%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO Verizon 2 20%
ONVOY, LLC - CO Onvoy 1 10%
FARMERS TELECOMMUNICATIONS, INC. - CO – 1 10%
NEW CINGULAR WIRELESS PCS, LLC AT&T 1 10%
T-MOBILE USA, INC. T-Mobile 1 10%
TDS BROADBAND SERVICE LLC TDS 1 10%

Frequently asked

Which prefixes belong to CORTEZ in area code 970?

10 blocks: 299, 516, 529, 560, 564, 565, 570, 739, 816, 912. The table above gives the holder of each.

Which carriers have numbers in CORTEZ?

QWEST CORPORATION (3 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO (2 blocks), ONVOY, LLC - CO (1 block), FARMERS TELECOMMUNICATIONS, INC. - CO (1 block), NEW CINGULAR WIRELESS PCS, LLC (1 block), T-MOBILE USA, INC. (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is CORTEZ 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 970

All 786 prefixes in 970