NumberResearchThousands-blocks in 412-744
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 412-744 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
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2004-03-31 | 412-744-0XXX | 0000–0999 | Assigned | CORE COMMUNICATIONS, INC. - PA | 3806 | PTGSBNZN21 | PA |
| 2002-04-04 | 412-744-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | PTGSBNZN21 | PA |
| 2016-03-11 | 412-744-2XXX | 2000–2999 | Assigned | ONVOY, LLC - PA | 547E | PTGSBNZN21 | PA |
| 2014-10-13 | 412-744-3XXX | 3000–3999 | Assigned | ONVOY, LLC - PA | 547E | PTGSBNZN21 | PA |
| 2006-10-13 | 412-744-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | PTGSBNZN21 | PA |
| 2016-03-02 | 412-744-5XXX | 5000–5999 | Assigned | BARR TELL USA, INC. - PA | 752H | PTGSBNZN21 | PA |
| 2013-10-22 | 412-744-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | PTGSBNZN21 | PA |
| 2004-09-13 | 412-744-7XXX | 7000–7999 | Assigned | CITYNET PENNSYLVANIA, LLC - PA | 657B | PTGSBNZN21 | PA |
| 2016-03-11 | 412-744-8XXX | 8000–8999 | Assigned | ONVOY, LLC - PA | 547E | PTGSBNZN21 | PA |
| — | 412-744-9XXX | 9000–9999 | Reserved | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PTGSBNZN21 | PA |
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.