NumberResearchThousands-blocks in 667-386
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/19/2026
The ten 1,000-number thousand-blocks inside prefix 667-386 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 667 blocks
Most active assignees, last 30 days — NPA 667
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2021-12-14 | 667-386-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | ARBUTUS | MD |
| 2022-02-24 | 667-386-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | ARBUTUS | MD |
| 2023-01-04 | 667-386-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | ARBUTUS | MD |
| 2023-02-08 | 667-386-3XXX | 3000–3999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | ARBUTUS | MD |
| 2023-02-08 | 667-386-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | ARBUTUS | MD |
| 2023-02-28 | 667-386-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | ARBUTUS | MD |
| 2022-02-28 | 667-386-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | ARBUTUS | MD |
| 2023-02-28 | 667-386-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | ARBUTUS | MD |
| 2026-09-03 | 667-386-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | ARBUTUS | MD |
| 2021-12-14 | 667-386-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | ARBUTUS | MD |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.