NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.
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 |
|---|---|---|---|---|---|---|---|
| 2024-03-27 | 412-556-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON1 | PA |
| 2023-10-24 | 412-484-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON1 | PA |
| 2023-09-12 | 412-484-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON1 | PA |
| 2023-07-12 | 412-239-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON1 | PA |
| 2023-04-18 | 412-286-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON1 | PA |
| 2020-09-16 | 412-752-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON1 | PA |
| 2017-10-17 | 412-588-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON1 | PA |
| 2015-11-19 | 412-513-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON1 | PA |
| 2015-07-27 | 412-618-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON1 | PA |
| 2015-07-27 | 412-618-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON1 | PA |
| 2015-07-14 | 412-906-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON1 | PA |
| 2015-04-09 | 412-688-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON1 | PA |
| 2014-06-26 | 412-420-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON1 | PA |
| 2014-05-14 | 412-930-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON1 | PA |
| 2014-03-06 | 412-906-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON1 | PA |
| 2014-01-07 | 412-852-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON1 | PA |
| 2013-06-28 | 412-515-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON1 | PA |
| 2012-10-18 | 412-888-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON1 | PA |
| 2012-06-01 | 412-347-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTGSBNZN12 | PA |
| 2012-06-01 | 412-453-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTGSBNZN18 | PA |
| 2012-05-17 | 412-275-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTGSBNZN14 | PA |
| 2012-05-17 | 412-528-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTGSBNZN16 | PA |
| 2012-02-08 | 412-339-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON1 | PA |
| 2011-12-21 | 412-927-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTGSBNZN10 | PA |
| 2011-10-27 | 412-339-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON1 | PA |
| 2011-09-16 | 412-275-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTGSBNZN14 | PA |
| 2010-12-13 | 412-593-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON6 | PA |
| 2010-11-17 | 412-802-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON1 | PA |
| 2010-11-17 | 412-906-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON1 | PA |
| 2010-10-27 | 412-776-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTGSBNZN15 | PA |
| 2010-10-27 | 412-776-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTGSBNZN15 | PA |
| 2010-08-27 | 412-345-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON8 | PA |
| 2010-05-28 | 412-228-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON1 | PA |
| 2009-09-30 | 412-360-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON1 | PA |
| 2008-11-05 | 412-727-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON4 | PA |
| 2008-11-05 | 412-960-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON7 | PA |
| 2008-11-05 | 412-961-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON3 | PA |
| 2008-07-30 | 412-822-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON3 | PA |
| 2008-07-08 | 412-246-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON1 | PA |
| 2008-05-06 | 412-205-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON5 | PA |
| 2008-05-06 | 412-246-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON1 | PA |
| 2008-05-06 | 412-532-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTGSBNZN11 | PA |
| 2008-05-06 | 412-729-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | ELIZABETH | PA |
| 2008-04-14 | 412-226-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | CLAIRTON | PA |
| 2008-04-01 | 412-904-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON1 | PA |
| 2008-03-24 | 412-213-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTGSBNZN18 | PA |
| 2008-03-24 | 412-357-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTGSBNZN22 | PA |
| 2007-12-03 | 412-208-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON1 | PA |
| 2007-09-14 | 412-294-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTGSBNZN14 | PA |
| 2007-07-17 | 412-567-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON1 | 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.