NumberResearchRecent thousands-block assignments
5 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
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 813
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 |
|---|---|---|---|---|---|---|---|
| 2015-12-17 | 813-721-7XXX | 7000–7999 | Assigned | HD CARRIER LLC | 321J | PLANT CITY | FL |
| 2015-12-17 | 813-721-8XXX | 8000–8999 | Assigned | HD CARRIER LLC | 321J | PLANT CITY | FL |
| 2015-12-17 | 813-721-9XXX | 9000–9999 | Assigned | HD CARRIER LLC | 321J | PLANT CITY | FL |
| 2015-12-17 | 813-799-0XXX | 0000–0999 | Assigned | HD CARRIER LLC | 321J | TAMPASTH | FL |
| 2015-12-17 | 813-799-1XXX | 1000–1999 | Assigned | HD CARRIER LLC | 321J | TAMPASTH | FL |
| 2015-12-17 | 813-799-2XXX | 2000–2999 | Assigned | HD CARRIER LLC | 321J | TAMPASTH | FL |
| 2015-12-17 | 813-799-3XXX | 3000–3999 | Assigned | HD CARRIER LLC | 321J | TAMPASTH | FL |
| 2015-12-17 | 813-799-4XXX | 4000–4999 | Assigned | HD CARRIER LLC | 321J | TAMPASTH | FL |
| 2015-12-17 | 813-799-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | TAMPASTH | FL |
| 2015-12-17 | 813-799-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | TAMPASTH | FL |
| 2015-12-17 | 813-799-7XXX | 7000–7999 | Assigned | HD CARRIER LLC | 321J | TAMPASTH | FL |
| 2015-12-17 | 813-799-8XXX | 8000–8999 | Assigned | HD CARRIER LLC | 321J | TAMPASTH | FL |
| 2015-12-17 | 813-799-9XXX | 9000–9999 | Assigned | HD CARRIER LLC | 321J | TAMPASTH | FL |
| 2015-12-17 | 813-823-0XXX | 0000–0999 | Assigned | HD CARRIER LLC | 321J | TAMPAEST | FL |
| 2015-12-17 | 813-823-1XXX | 1000–1999 | Assigned | HD CARRIER LLC | 321J | TAMPAEST | FL |
| 2015-12-17 | 813-823-2XXX | 2000–2999 | Assigned | HD CARRIER LLC | 321J | TAMPAEST | FL |
| 2015-12-17 | 813-823-3XXX | 3000–3999 | Assigned | HD CARRIER LLC | 321J | TAMPAEST | FL |
| 2015-12-17 | 813-823-4XXX | 4000–4999 | Assigned | HD CARRIER LLC | 321J | TAMPAEST | FL |
| 2015-12-17 | 813-823-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | TAMPAEST | FL |
| 2015-12-17 | 813-823-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | TAMPAEST | FL |
| 2015-12-17 | 813-823-7XXX | 7000–7999 | Assigned | HD CARRIER LLC | 321J | TAMPAEST | FL |
| 2015-12-17 | 813-823-8XXX | 8000–8999 | Assigned | HD CARRIER LLC | 321J | TAMPAEST | FL |
| 2015-12-17 | 813-823-9XXX | 9000–9999 | Assigned | HD CARRIER LLC | 321J | TAMPAEST | FL |
| 2015-12-17 | 813-824-0XXX | 0000–0999 | Assigned | HD CARRIER LLC | 321J | TAMPANTH | FL |
| 2015-12-17 | 813-824-1XXX | 1000–1999 | Assigned | HD CARRIER LLC | 321J | TAMPANTH | FL |
| 2015-12-17 | 813-824-2XXX | 2000–2999 | Assigned | HD CARRIER LLC | 321J | TAMPANTH | FL |
| 2015-12-17 | 813-824-3XXX | 3000–3999 | Assigned | HD CARRIER LLC | 321J | TAMPANTH | FL |
| 2015-12-17 | 813-824-4XXX | 4000–4999 | Assigned | HD CARRIER LLC | 321J | TAMPANTH | FL |
| 2015-12-17 | 813-824-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | TAMPANTH | FL |
| 2015-12-17 | 813-824-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | TAMPANTH | FL |
| 2015-12-17 | 813-824-7XXX | 7000–7999 | Assigned | HD CARRIER LLC | 321J | TAMPANTH | FL |
| 2015-12-17 | 813-824-8XXX | 8000–8999 | Assigned | HD CARRIER LLC | 321J | TAMPANTH | FL |
| 2015-12-17 | 813-824-9XXX | 9000–9999 | Assigned | HD CARRIER LLC | 321J | TAMPANTH | FL |
| 2015-12-17 | 813-912-0XXX | 0000–0999 | Assigned | HD CARRIER LLC | 321J | TAMPAWST | FL |
| 2015-12-17 | 813-912-1XXX | 1000–1999 | Assigned | HD CARRIER LLC | 321J | TAMPAWST | FL |
| 2015-12-17 | 813-912-2XXX | 2000–2999 | Assigned | HD CARRIER LLC | 321J | TAMPAWST | FL |
| 2015-12-17 | 813-912-3XXX | 3000–3999 | Assigned | HD CARRIER LLC | 321J | TAMPAWST | FL |
| 2015-12-17 | 813-912-4XXX | 4000–4999 | Assigned | HD CARRIER LLC | 321J | TAMPAWST | FL |
| 2015-12-17 | 813-912-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | TAMPAWST | FL |
| 2015-12-17 | 813-912-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | TAMPAWST | FL |
| 2015-12-17 | 813-912-7XXX | 7000–7999 | Assigned | HD CARRIER LLC | 321J | TAMPAWST | FL |
| 2015-12-17 | 813-912-8XXX | 8000–8999 | Assigned | HD CARRIER LLC | 321J | TAMPAWST | FL |
| 2015-12-17 | 813-912-9XXX | 9000–9999 | Assigned | HD CARRIER LLC | 321J | TAMPAWST | FL |
| 2015-12-16 | 813-370-1XXX | 1000–1999 | Assigned | ONVOY, LLC - FL | 937C | TAMPAWST | FL |
| 2015-12-16 | 813-646-0XXX | 0000–0999 | Assigned | HD CARRIER LLC | 321J | ZEPHYRHILS | FL |
| 2015-12-16 | 813-646-1XXX | 1000–1999 | Assigned | HD CARRIER LLC | 321J | ZEPHYRHILS | FL |
| 2015-12-16 | 813-646-2XXX | 2000–2999 | Assigned | HD CARRIER LLC | 321J | ZEPHYRHILS | FL |
| 2015-12-16 | 813-646-3XXX | 3000–3999 | Assigned | HD CARRIER LLC | 321J | ZEPHYRHILS | FL |
| 2015-12-16 | 813-646-4XXX | 4000–4999 | Assigned | HD CARRIER LLC | 321J | ZEPHYRHILS | FL |
| 2015-12-16 | 813-646-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | ZEPHYRHILS | FL |
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.