NumberResearchThousands-blocks in 412-850
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 412-850 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
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 |
|---|---|---|---|---|---|---|---|
| 2016-03-02 | 412-850-0XXX | 0000–0999 | Assigned | BARR TELL USA, INC. - PA | 752H | PTGSBNZN19 | PA |
| 2017-06-23 | 412-850-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | PTGSBNZN19 | PA |
| 2019-09-06 | 412-850-2XXX | 2000–2999 | Assigned | ONVOY, LLC - PA | 547E | PTGSBNZN19 | PA |
| 2016-03-15 | 412-850-3XXX | 3000–3999 | Assigned | ONVOY, LLC - PA | 547E | PTGSBNZN19 | PA |
| 2016-03-15 | 412-850-4XXX | 4000–4999 | Assigned | ONVOY, LLC - PA | 547E | PTGSBNZN19 | PA |
| 2015-02-03 | 412-850-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | PTGSBNZN19 | PA |
| — | 412-850-6XXX | 6000–6999 | Reserved | ADVANCED TELEPHONE SYS INC DBA HTC COMMUNICATIONS | 2522 | PTGSBNZN19 | PA |
| 2015-05-19 | 412-850-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PTGSBNZN19 | PA |
| 2013-04-09 | 412-850-8XXX | 8000–8999 | Assigned | PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA | 967E | PTGSBNZN19 | PA |
| 2013-04-09 | 412-850-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA | 967E | PTGSBNZN19 | 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.