NumberResearchRecent thousands-block assignments
43 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 571
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 |
|---|---|---|---|---|---|---|---|
| 2024-01-22 | 571-628-3XXX | 3000–3999 | Assigned | ONVOY, LLC - VA | 138E | DALE CITY | VA |
| 2024-01-22 | 571-628-8XXX | 8000–8999 | Assigned | ONVOY, LLC - VA | 138E | DALE CITY | VA |
| 2024-01-18 | 571-627-0XXX | 0000–0999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | LEESBURG | VA |
| 2024-01-16 | 571-660-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | TRIANGLE | VA |
| 2024-01-11 | 571-491-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | DULLES | VA |
| 2024-01-11 | 571-592-3XXX | 3000–3999 | Assigned | COMMIO, LLC | 939H | OCCOQUAN | VA |
| 2024-01-11 | 571-592-4XXX | 4000–4999 | Assigned | COMMIO, LLC | 939H | OCCOQUAN | VA |
| 2024-01-11 | 571-592-5XXX | 5000–5999 | Assigned | COMMIO, LLC | 939H | OCCOQUAN | VA |
| 2024-01-11 | 571-592-6XXX | 6000–6999 | Assigned | COMMIO, LLC | 939H | OCCOQUAN | VA |
| 2024-01-11 | 571-593-4XXX | 4000–4999 | Assigned | COMMIO, LLC | 939H | LEESBURG | VA |
| 2024-01-11 | 571-593-6XXX | 6000–6999 | Assigned | COMMIO, LLC | 939H | LEESBURG | VA |
| 2024-01-11 | 571-593-7XXX | 7000–7999 | Assigned | COMMIO, LLC | 939H | LEESBURG | VA |
| 2024-01-11 | 571-596-5XXX | 5000–5999 | Assigned | COMMIO, LLC | 939H | WSNGTNZN17 | VA |
| 2024-01-11 | 571-619-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MANASSAS | VA |
| 2024-01-11 | 571-661-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | WSNGTNZN17 | VA |
| 2024-01-11 | 571-661-3XXX | 3000–3999 | Assigned | COMMIO, LLC | 939H | WSNGTNZN17 | VA |
| 2024-01-11 | 571-661-4XXX | 4000–4999 | Assigned | COMMIO, LLC | 939H | WSNGTNZN17 | VA |
| 2024-01-11 | 571-663-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | WSNGTNZN19 | VA |
| 2024-01-11 | 571-663-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | WSNGTNZN19 | VA |
| 2024-01-11 | 571-663-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | WSNGTNZN19 | VA |
| 2024-01-11 | 571-664-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | MANASSAS | VA |
| 2024-01-11 | 571-664-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | MANASSAS | VA |
| 2024-01-11 | 571-664-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | MANASSAS | VA |
| 2024-01-11 | 571-670-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | WSNGTNZN08 | VA |
| 2024-01-11 | 571-670-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | WSNGTNZN08 | VA |
| 2024-01-11 | 571-670-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | WSNGTNZN08 | VA |
| 2024-01-11 | 571-670-3XXX | 3000–3999 | Assigned | COMMIO, LLC | 939H | WSNGTNZN08 | VA |
| 2024-01-11 | 571-670-4XXX | 4000–4999 | Assigned | COMMIO, LLC | 939H | WSNGTNZN08 | VA |
| 2024-01-11 | 571-670-5XXX | 5000–5999 | Assigned | COMMIO, LLC | 939H | WSNGTNZN08 | VA |
| 2024-01-10 | 571-202-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | HERNDON | VA |
| 2024-01-10 | 571-202-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | HERNDON | VA |
| 2024-01-10 | 571-374-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | INDENDNTHL | VA |
| 2024-01-10 | 571-387-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HERNDON | VA |
| 2024-01-10 | 571-417-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | LEESBURG | VA |
| 2024-01-10 | 571-427-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | OCCOQUAN | VA |
| 2024-01-08 | 571-349-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ARCOLA | VA |
| 2024-01-08 | 571-576-6XXX | 6000–6999 | Assigned | ONVOY, LLC - VA | 138E | MANASSAS | VA |
| 2024-01-08 | 571-619-8XXX | 8000–8999 | Assigned | ONVOY, LLC - VA | 138E | MANASSAS | VA |
| 2024-01-08 | 571-619-9XXX | 9000–9999 | Assigned | ONVOY, LLC - VA | 138E | MANASSAS | VA |
| 2024-01-08 | 571-646-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ENGLESIDE | VA |
| 2024-01-08 | 571-657-5XXX | 5000–5999 | Assigned | ONVOY, LLC - VA | 138E | MANASSAS | VA |
| 2024-01-08 | 571-657-6XXX | 6000–6999 | Assigned | ONVOY, LLC - VA | 138E | MANASSAS | VA |
| 2023-12-28 | 571-240-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | HERNDON | VA |
| 2023-12-21 | 571-629-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN08 | VA |
| 2023-12-21 | 571-629-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN08 | VA |
| 2023-12-21 | 571-629-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN08 | VA |
| 2023-12-21 | 571-629-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN08 | VA |
| 2023-12-21 | 571-629-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN08 | VA |
| 2023-12-21 | 571-629-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN08 | VA |
| 2023-12-21 | 571-629-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN08 | VA |
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.