NumberResearchThousands-blocks in 412-308
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 412-308 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 412 blocks
Most active assignees, all time — NPA 412
New assignments by month
Sep 2026
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2017-06-19 | 412-308-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | PTGSBNZN12 | PA |
| — | 412-308-1XXX | 1000–1999 | Reserved | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7315 | PTGSBNZN12 | PA |
| — | 412-308-2XXX | 2000–2999 | Available | PTGSBNZN12 | PA | ||
| 2018-10-22 | 412-308-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | PTGSBNZN12 | PA |
| 2018-11-13 | 412-308-4XXX | 4000–4999 | Assigned | IP HORIZON LLC | 515J | PTGSBNZN12 | PA |
| 2004-04-22 | 412-308-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTGSBNZN12 | PA |
| — | 412-308-6XXX | 6000–6999 | Reserved | COMCAST IP PHONE, LLC | 318J | PTGSBNZN12 | PA |
| 2015-05-19 | 412-308-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PTGSBNZN12 | PA |
| 2016-03-02 | 412-308-8XXX | 8000–8999 | Assigned | BARR TELL USA, INC. - PA | 752H | PTGSBNZN12 | PA |
| 2017-06-23 | 412-308-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | PTGSBNZN12 | PA |
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.