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

WALDEN prefixes in area code 970

NANPA records 5 assigned NXX blocks to rate center WALDEN in area code 970, 0.6% 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. 4 holders hold those blocks, the largest being UNION TELEPHONE COMPANY (2), ONVOY, LLC - CO (1), CENTURYTEL OF EAGLE, INC. DBA CENTURYLINK (1). The earliest assignment on record here is 2004-01-20 and the most recent 2019-02-19. 2 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 329, 845 – overlay codes cover the same geography, so a rate center is served by all of them.

5 assigned blocks – 0.6% of 970
4 holders of record
2 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
970-594 Onvoy ONVOY, LLC - CO 2007-07-10 yes yes
970-723 Lumen CENTURYTEL OF EAGLE, INC. DBA CENTURYLINK – no yes
970-750 UNION TELEPHONE COMPANY 2004-01-20 no yes
970-838 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC 2019-02-19 yes yes
970-873 UNION TELEPHONE COMPANY – 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
UNION TELEPHONE COMPANY – 2 40%
ONVOY, LLC - CO Onvoy 1 20%
CENTURYTEL OF EAGLE, INC. DBA CENTURYLINK Lumen 1 20%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 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 WALDEN in area code 970?

5 blocks: 594, 723, 750, 838, 873. The table above gives the holder of each.

Which carriers have numbers in WALDEN?

UNION TELEPHONE COMPANY (2 blocks), ONVOY, LLC - CO (1 block), CENTURYTEL OF EAGLE, INC. DBA CENTURYLINK (1 block), MCIMETRO ACCESS TRANSMISSION SERVICES 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 WALDEN 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