NumberResearchThousands-blocks in 971-250
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 971-250 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 971 blocks
Most active assignees, all time — NPA 971
New assignments by month
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 971-250-0XXX | 0000–0999 | Reserved | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BEAVERTON | OR |
| 2011-11-11 | 971-250-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | BEAVERTON | OR |
| 2008-10-03 | 971-250-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BEAVERTON | OR |
| 2008-10-03 | 971-250-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BEAVERTON | OR |
| — | 971-250-4XXX | 4000–4999 | Reserved | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BEAVERTON | OR |
| — | 971-250-5XXX | 5000–5999 | Reserved | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BEAVERTON | OR |
| — | 971-250-6XXX | 6000–6999 | Reserved | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BEAVERTON | OR |
| — | 971-250-7XXX | 7000–7999 | Reserved | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BEAVERTON | OR |
| 2012-09-25 | 971-250-8XXX | 8000–8999 | Assigned | ONVOY, LLC - OR | 750E | BEAVERTON | OR |
| — | 971-250-9XXX | 9000–9999 | Reserved | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BEAVERTON | OR |
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.