NumberResearchRecent thousands-block assignments
17 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, last 30 days — NPA 412
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2005-05-31 | 412-251-3XXX | 3000–3999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | PTTSBGZON1 | PA |
| 2005-05-10 | 412-455-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTGSBNZN19 | PA |
| 2005-05-10 | 412-455-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTGSBNZN19 | PA |
| 2005-05-05 | 412-251-1XXX | 1000–1999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | PTTSBGZON1 | PA |
| 2005-04-08 | 412-728-1XXX | 1000–1999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | PTTSBGZON1 | PA |
| 2005-04-08 | 412-728-2XXX | 2000–2999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | PTTSBGZON1 | PA |
| 2005-04-05 | 412-224-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON1 | PA |
| 2005-03-11 | 412-206-4XXX | 4000–4999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTGSBNZN13 | PA |
| 2005-02-22 | 412-513-5XXX | 5000–5999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | PTTSBGZON1 | PA |
| 2005-02-18 | 412-567-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON1 | PA |
| 2005-02-18 | 412-567-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON1 | PA |
| 2005-02-17 | 412-357-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTGSBNZN22 | PA |
| 2005-02-17 | 412-357-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTGSBNZN22 | PA |
| 2005-02-17 | 412-453-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTGSBNZN18 | PA |
| 2005-02-17 | 412-528-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTGSBNZN16 | PA |
| 2005-02-03 | 412-253-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON6 | PA |
| 2005-02-03 | 412-513-3XXX | 3000–3999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | PTTSBGZON1 | PA |
| 2005-01-29 | 412-564-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTGSBNZN13 | PA |
| 2005-01-29 | 412-564-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTGSBNZN13 | PA |
| 2005-01-29 | 412-573-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTGSBNZN21 | PA |
| 2005-01-29 | 412-847-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTGSBNZN17 | PA |
| 2005-01-28 | 412-329-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTGSBNZN15 | PA |
| 2005-01-26 | 412-265-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTGSBNZN20 | PA |
| 2005-01-13 | 412-253-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON6 | PA |
| 2005-01-13 | 412-307-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON2 | PA |
| 2005-01-13 | 412-436-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON4 | PA |
| 2005-01-13 | 412-489-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTGSBNZN14 | PA |
| 2005-01-13 | 412-923-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON7 | PA |
| 2005-01-05 | 412-513-2XXX | 2000–2999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | PTTSBGZON1 | PA |
| 2005-01-04 | 412-307-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON2 | PA |
| 2005-01-04 | 412-436-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON4 | PA |
| 2005-01-04 | 412-722-5XXX | 5000–5999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | PTGSBNZN14 | PA |
| 2005-01-04 | 412-923-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON7 | PA |
| 2004-12-29 | 412-513-6XXX | 6000–6999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | PTTSBGZON1 | PA |
| 2004-12-27 | 412-251-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | PTTSBGZON1 | PA |
| 2004-11-29 | 412-513-7XXX | 7000–7999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | PTTSBGZON1 | PA |
| 2004-11-23 | 412-685-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON5 | PA |
| 2004-11-23 | 412-924-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON8 | PA |
| 2004-11-23 | 412-943-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTGSBNZN11 | PA |
| 2004-11-23 | 412-961-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PTTSBGZON3 | PA |
| 2004-10-29 | 412-513-8XXX | 8000–8999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | PTTSBGZON1 | PA |
| 2004-10-11 | 412-513-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | PTTSBGZON1 | PA |
| 2004-10-11 | 412-722-6XXX | 6000–6999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | PTGSBNZN14 | PA |
| 2004-10-05 | 412-301-0XXX | 0000–0999 | Assigned | COMCAST IP PHONE, LLC | 318J | PTTSBGZON2 | PA |
| 2004-10-05 | 412-458-0XXX | 0000–0999 | Assigned | COMCAST IP PHONE, LLC | 318J | PTTSBGZON7 | PA |
| 2004-10-04 | 412-668-0XXX | 0000–0999 | Assigned | COMCAST IP PHONE, LLC | 318J | PTTSBGZON6 | PA |
| 2004-09-22 | 412-867-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | PTTSBGZON1 | PA |
| 2004-09-21 | 412-329-5XXX | 5000–5999 | Assigned | PAETEC ITEL, LLC | 829J | PTGSBNZN15 | PA |
| 2004-09-13 | 412-235-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | PTTSBGZON1 | PA |
| 2004-09-13 | 412-245-5XXX | 5000–5999 | Assigned | CITYNET PENNSYLVANIA, LLC - PA | 657B | PTGSBNZN22 | 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.