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

STEAMBOSPG prefixes in area code 970

NANPA records 15 assigned NXX blocks to rate center STEAMBOSPG in area code 970, 1.9% 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. 8 holders hold those blocks, the largest being QWEST CORPORATION (4), T-MOBILE USA, INC. (2), LEVEL 3 COMMUNICATIONS, LLC - CO (2). The earliest assignment on record here is 2002-05-02 and the most recent 2026-10-16. 9 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

15 assigned blocks – 1.9% of 970
8 holders of record
9 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
970-291 T-Mobile T-MOBILE USA, INC. – yes yes
970-367 Lumen LEVEL 3 COMMUNICATIONS, LLC - CO 2002-08-20 yes yes
970-421 AT&T NEW CINGULAR WIRELESS PCS, LLC – no yes
970-439 AT&T AT&T - LOCAL 2005-11-21 yes yes
970-457 Lumen LEVEL 3 COMMUNICATIONS, LLC - CO 2002-05-02 yes yes
970-734 UNION TELEPHONE COMPANY – no yes
970-761 Onvoy ONVOY, LLC - CO – yes yes
970-819 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO – yes yes
970-846 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO – no yes
970-870 Lumen QWEST CORPORATION – no yes
970-871 Lumen QWEST CORPORATION – no yes
970-875 Lumen QWEST CORPORATION – yes yes
970-879 Lumen QWEST CORPORATION – no yes
970-896 T-Mobile T-MOBILE USA, INC. 2021-11-09 yes yes
970-974 Onvoy ONVOY, LLC - CO 2026-10-16 yes no

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 4 26.7%
T-MOBILE USA, INC. T-Mobile 2 13.3%
LEVEL 3 COMMUNICATIONS, LLC - CO Lumen 2 13.3%
ONVOY, LLC - CO Onvoy 2 13.3%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO Verizon 2 13.3%
NEW CINGULAR WIRELESS PCS, LLC AT&T 1 6.7%
AT&T - LOCAL AT&T 1 6.7%
UNION TELEPHONE COMPANY – 1 6.7%

Frequently asked

Which prefixes belong to STEAMBOSPG in area code 970?

15 blocks: 291, 367, 421, 439, 457, 734, 761, 819, 846, 870, 871, 875 and 3 more, all listed in the table above.

Which carriers have numbers in STEAMBOSPG?

QWEST CORPORATION (4 blocks), T-MOBILE USA, INC. (2 blocks), LEVEL 3 COMMUNICATIONS, LLC - CO (2 blocks), ONVOY, LLC - CO (2 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO (2 blocks), NEW CINGULAR WIRELESS PCS, 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 STEAMBOSPG 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