NumberResearchThousands-blocks in 970-439
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/20/2026
The ten 1,000-number thousand-blocks inside prefix 970-439 and who was initially assigned each. Under pooling these blocks often belong to different carriers — the single prefix-level “assignee” is usually just the pool / code holder, not who holds the numbers. ← all 970 blocks
Most active assignees, all time — NPA 970
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2010-01-21 | 970-439-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | STEAMBOSPG | CO |
| 2010-09-09 | 970-439-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | STEAMBOSPG | CO |
| 2011-05-24 | 970-439-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | STEAMBOSPG | CO |
| 2011-02-10 | 970-439-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | STEAMBOSPG | CO |
| 2012-09-06 | 970-439-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CO | 078F | STEAMBOSPG | CO |
| 2025-08-20 | 970-439-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | STEAMBOSPG | CO |
| 2024-12-04 | 970-439-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | STEAMBOSPG | CO |
| 2012-11-15 | 970-439-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CO | 7378 | STEAMBOSPG | CO |
| 2014-10-24 | 970-439-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | STEAMBOSPG | CO |
| 2005-11-22 | 970-439-9XXX | 9000–9999 | Assigned | AT&T - LOCAL | 7421 | STEAMBOSPG | CO |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.