NumberResearchRecent thousands-block assignments
4,119 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 10/03/2026
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
New assignments by month
Oct 2026
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Quick find in this area code:
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2025-04-30 | 423-885-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - TN | 6278 | ENGLEWOOD | TN |
| 2025-04-30 | 423-885-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - TN | 6278 | ENGLEWOOD | TN |
| 2025-04-30 | 423-887-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - TN | 6278 | ENGLEWOOD | TN |
| 2025-04-30 | 423-887-9XXX | 9000–9999 | Assigned | UNITED STATES CELLULAR - TN | 6278 | ENGLEWOOD | TN |
| 2025-04-30 | 425-567-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HALLS LAKE | WA |
| 2025-04-30 | 425-567-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | HALLS LAKE | WA |
| 2025-04-30 | 443-315-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CATONSVL | MD |
| 2025-04-30 | 443-598-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SHERWD FOR | MD |
| 2025-04-30 | 445-305-2XXX | 2000–2999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | PHPHSBZN45 | PA |
| 2025-04-30 | 445-305-3XXX | 3000–3999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | PHPHSBZN45 | PA |
| 2025-04-30 | 445-305-4XXX | 4000–4999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | PHPHSBZN45 | PA |
| 2025-04-30 | 445-305-6XXX | 6000–6999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | PHPHSBZN45 | PA |
| 2025-04-30 | 447-266-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SADORUS | IL |
| 2025-04-30 | 447-300-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MANSFIELD | IL |
| 2025-04-30 | 447-444-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BONDVILLE | IL |
| 2025-04-30 | 447-466-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CHATHAM | IL |
| 2025-04-30 | 447-477-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | FISHER | IL |
| 2025-04-30 | 447-667-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | OGDEN | IL |
| 2025-04-30 | 447-677-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | POTOMAC | IL |
| 2025-04-30 | 447-744-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BROADLANDS | IL |
| 2025-04-30 | 447-999-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | FLATVILLE | IL |
| 2025-04-30 | 463-323-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WESTFIELD | IN |
| 2025-04-30 | 507-996-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | LE CENTER | MN |
| 2025-04-30 | 531-294-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - NE | 6263 | NEBRASKACY | NE |
| 2025-04-30 | 531-395-5XXX | 5000–5999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | OMAHA | NE |
| 2025-04-30 | 531-395-6XXX | 6000–6999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | OMAHA | NE |
| 2025-04-30 | 567-800-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | OTTAWA | OH |
| 2025-04-30 | 574-225-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WINAMAC | IN |
| 2025-04-30 | 574-388-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | LAPAZ | IN |
| 2025-04-30 | 574-646-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MILLWOOD | IN |
| 2025-04-30 | 574-696-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MILFORD | IN |
| 2025-04-30 | 574-988-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | NEWCARLISL | IN |
| 2025-04-30 | 574-992-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | LOGANSPORT | IN |
| 2025-04-30 | 614-605-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 6025 | COLUMBUS | OH |
| 2025-04-30 | 614-605-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 6025 | COLUMBUS | OH |
| 2025-04-30 | 614-605-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 6025 | COLUMBUS | OH |
| 2025-04-30 | 614-605-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 6025 | COLUMBUS | OH |
| 2025-04-30 | 614-605-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 6025 | COLUMBUS | OH |
| 2025-04-30 | 645-249-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | PERRINE | FL |
| 2025-04-30 | 645-249-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | PERRINE | FL |
| 2025-04-30 | 656-250-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | PLANT CITY | FL |
| 2025-04-30 | 656-251-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | PLANT CITY | FL |
| 2025-04-30 | 656-253-7XXX | 7000–7999 | Assigned | IP HORIZON LLC | 515J | TAMPAWST | FL |
| 2025-04-30 | 656-253-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | TAMPAWST | FL |
| 2025-04-30 | 656-257-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | TAMPANTH | FL |
| 2025-04-30 | 656-257-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | TAMPANTH | FL |
| 2025-04-30 | 656-257-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | TAMPANTH | FL |
| 2025-04-30 | 656-258-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | TAMPACEN | FL |
| 2025-04-30 | 656-258-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | TAMPACEN | FL |
| 2025-04-30 | 656-259-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | TAMPANTH | FL |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 10/03/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.