NumberResearchThousands-blocks in 412-545
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 412-545 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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Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-01-09 | 412-545-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | PTTSBGZON4 | PA |
| 2013-04-10 | 412-545-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA | 967E | PTTSBGZON4 | PA |
| 2015-07-31 | 412-545-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | PTTSBGZON4 | PA |
| 2014-08-14 | 412-545-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - PA | 002F | PTTSBGZON4 | PA |
| 2013-10-22 | 412-545-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | PTTSBGZON4 | PA |
| 2016-06-21 | 412-545-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - PA | 002F | PTTSBGZON4 | PA |
| 2014-11-03 | 412-545-6XXX | 6000–6999 | Assigned | ONVOY, LLC - PA | 547E | PTTSBGZON4 | PA |
| 2013-04-10 | 412-545-7XXX | 7000–7999 | Assigned | PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA | 967E | PTTSBGZON4 | PA |
| 2003-10-24 | 412-545-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PTTSBGZON4 | PA |
| — | 412-545-9XXX | 9000–9999 | Reserved | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PTTSBGZON4 | 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.