NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026
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
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2012-12-20 | 412-902-3XXX | 3000–3999 | Assigned | CITYNET PENNSYLVANIA, LLC - PA | 657B | PTGSBNZN22 | PA |
| 2005-07-14 | 412-735-7XXX | 7000–7999 | Assigned | CITYNET PENNSYLVANIA, LLC - PA | 657B | PTTSBGZON1 | PA |
| 2004-09-13 | 412-245-5XXX | 5000–5999 | Assigned | CITYNET PENNSYLVANIA, LLC - PA | 657B | PTGSBNZN22 | PA |
| 2004-09-13 | 412-283-7XXX | 7000–7999 | Assigned | CITYNET PENNSYLVANIA, LLC - PA | 657B | PTGSBNZN12 | PA |
| 2004-09-13 | 412-294-5XXX | 5000–5999 | Assigned | CITYNET PENNSYLVANIA, LLC - PA | 657B | PTGSBNZN14 | PA |
| 2004-09-13 | 412-324-5XXX | 5000–5999 | Assigned | CITYNET PENNSYLVANIA, LLC - PA | 657B | PTGSBNZN16 | PA |
| 2004-09-13 | 412-342-3XXX | 3000–3999 | Assigned | CITYNET PENNSYLVANIA, LLC - PA | 657B | PTTSBGZON4 | PA |
| 2004-09-13 | 412-346-3XXX | 3000–3999 | Assigned | CITYNET PENNSYLVANIA, LLC - PA | 657B | PTGSBNZN10 | PA |
| 2004-09-13 | 412-368-7XXX | 7000–7999 | Assigned | CITYNET PENNSYLVANIA, LLC - PA | 657B | PTTSBGZON5 | PA |
| 2004-09-13 | 412-423-7XXX | 7000–7999 | Assigned | CITYNET PENNSYLVANIA, LLC - PA | 657B | PTGSBNZN20 | PA |
| 2004-09-13 | 412-455-2XXX | 2000–2999 | Assigned | CITYNET PENNSYLVANIA, LLC - PA | 657B | PTGSBNZN19 | PA |
| 2004-09-13 | 412-532-5XXX | 5000–5999 | Assigned | CITYNET PENNSYLVANIA, LLC - PA | 657B | PTGSBNZN11 | PA |
| 2004-09-13 | 412-593-3XXX | 3000–3999 | Assigned | CITYNET PENNSYLVANIA, LLC - PA | 657B | PTTSBGZON6 | PA |
| 2004-09-13 | 412-632-7XXX | 7000–7999 | Assigned | CITYNET PENNSYLVANIA, LLC - PA | 657B | PTTSBGZON3 | PA |
| 2004-09-13 | 412-744-7XXX | 7000–7999 | Assigned | CITYNET PENNSYLVANIA, LLC - PA | 657B | PTGSBNZN21 | PA |
| 2004-09-13 | 412-753-4XXX | 4000–4999 | Assigned | CITYNET PENNSYLVANIA, LLC - PA | 657B | PTGSBNZN18 | PA |
| 2004-09-13 | 412-776-3XXX | 3000–3999 | Assigned | CITYNET PENNSYLVANIA, LLC - PA | 657B | PTGSBNZN15 | PA |
| 2004-09-13 | 412-847-6XXX | 6000–6999 | Assigned | CITYNET PENNSYLVANIA, LLC - PA | 657B | PTGSBNZN17 | PA |
| 2004-09-13 | 412-879-7XXX | 7000–7999 | Assigned | CITYNET PENNSYLVANIA, LLC - PA | 657B | ELIZABETH | PA |
| 2004-09-13 | 412-924-2XXX | 2000–2999 | Assigned | CITYNET PENNSYLVANIA, LLC - PA | 657B | PTTSBGZON8 | PA |
| 2004-09-13 | 412-929-5XXX | 5000–5999 | Assigned | CITYNET PENNSYLVANIA, LLC - PA | 657B | PTTSBGZON7 | PA |
| 2004-09-13 | 412-945-8XXX | 8000–8999 | Assigned | CITYNET PENNSYLVANIA, LLC - PA | 657B | CLAIRTON | PA |
| 2004-09-13 | 412-998-3XXX | 3000–3999 | Assigned | CITYNET PENNSYLVANIA, LLC - PA | 657B | PTGSBNZN13 | PA |
| 2003-12-04 | 412-228-6XXX | 6000–6999 | Assigned | CITYNET PENNSYLVANIA, LLC - PA | 657B | PTTSBGZON1 | PA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.