NumberResearchThousands-blocks in 309-880
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 309-880 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 309 blocks
Most active assignees, all time — NPA 309
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
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Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-01-03 | 309-880-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | IPAVA | IL |
| 2022-11-14 | 309-880-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | IPAVA | IL |
| 2024-08-13 | 309-880-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | IPAVA | IL |
| — | 309-880-3XXX | 3000–3999 | Available | IPAVA | IL | ||
| 2024-04-15 | 309-880-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | IPAVA | IL |
| — | 309-880-5XXX | 5000–5999 | Available | IPAVA | IL | ||
| — | 309-880-6XXX | 6000–6999 | Available | IPAVA | IL | ||
| 2026-07-21 | 309-880-7XXX | 7000–7999 | Assigned | EXIANT COMMUNICATIONS LLC | 114J | IPAVA | IL |
| 2021-06-09 | 309-880-8XXX | 8000–8999 | Assigned | ONVOY, LLC | 224C | IPAVA | IL |
| 2021-05-19 | 309-880-9XXX | 9000–9999 | Assigned | HD CARRIER LLC | 321J | IPAVA | IL |
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.