NumberResearchRecent thousands-block assignments
1 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, last 30 days — NPA 312
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Dec 2025
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2025-09-02 | 312-452-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHICGOZN01 | IL |
| 2025-09-02 | 312-452-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHICGOZN01 | IL |
| 2025-09-02 | 312-452-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHICGOZN01 | IL |
| 2025-09-02 | 312-931-6XXX | 6000–6999 | Assigned | ONVOY, LLC | 224C | CHICGOZN01 | IL |
| 2025-08-26 | 312-283-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | CHICGOZN01 | IL |
| 2025-08-26 | 312-385-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | CHICGOZN01 | IL |
| 2025-08-26 | 312-409-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | CHICGOZN01 | IL |
| 2025-08-26 | 312-473-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | CHICGOZN01 | IL |
| 2025-08-26 | 312-473-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | CHICGOZN01 | IL |
| 2025-08-26 | 312-473-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | CHICGOZN01 | IL |
| 2025-08-26 | 312-473-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | CHICGOZN01 | IL |
| 2025-07-21 | 312-449-0XXX | 0000–0999 | Assigned | WAVENATION, LLC | 700J | CHICGOZN01 | IL |
| 2025-04-17 | 312-283-6XXX | 6000–6999 | Assigned | NUSO, LLC | 732J | CHICGOZN01 | IL |
| 2025-04-17 | 312-582-9XXX | 9000–9999 | Assigned | NUSO, LLC | 732J | CHICGOZN01 | IL |
| 2025-03-13 | 312-473-8XXX | 8000–8999 | Assigned | ONVOY, LLC | 224C | CHICGOZN01 | IL |
| 2025-03-10 | 312-791-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CHICGOZN01 | IL |
| 2024-09-17 | 312-999-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHICGOZN01 | IL |
| 2024-05-21 | 312-931-4XXX | 4000–4999 | Assigned | NUSO, LLC | 478J | CHICGOZN01 | IL |
| 2024-03-13 | 312-931-8XXX | 8000–8999 | Assigned | VONAGE AMERICA LLC | 197D | CHICGOZN01 | IL |
| 2024-02-20 | 312-708-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHICGOZN01 | IL |
| 2024-02-20 | 312-708-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHICGOZN01 | IL |
| 2024-02-20 | 312-708-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHICGOZN01 | IL |
| 2024-02-20 | 312-708-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHICGOZN01 | IL |
| 2024-02-20 | 312-708-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHICGOZN01 | IL |
| 2024-02-20 | 312-708-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHICGOZN01 | IL |
| 2024-02-20 | 312-708-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHICGOZN01 | IL |
| 2024-02-20 | 312-708-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHICGOZN01 | IL |
| 2024-02-20 | 312-708-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHICGOZN01 | IL |
| 2024-02-20 | 312-708-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHICGOZN01 | IL |
| 2023-09-13 | 312-685-3XXX | 3000–3999 | Assigned | ONVOY, LLC | 224C | CHICGOZN01 | IL |
| 2023-09-13 | 312-685-4XXX | 4000–4999 | Assigned | ONVOY, LLC | 224C | CHICGOZN01 | IL |
| 2023-08-16 | 312-757-3XXX | 3000–3999 | Assigned | ONVOY, LLC | 224C | CHICGOZN01 | IL |
| 2023-06-21 | 312-381-8XXX | 8000–8999 | Assigned | ONVOY, LLC | 224C | CHICGOZN01 | IL |
| 2023-05-22 | 312-748-0XXX | 0000–0999 | Assigned | ONVOY, LLC | 224C | CHICGOZN01 | IL |
| 2023-05-22 | 312-748-1XXX | 1000–1999 | Assigned | ONVOY, LLC | 224C | CHICGOZN01 | IL |
| 2023-05-22 | 312-748-2XXX | 2000–2999 | Assigned | ONVOY, LLC | 224C | CHICGOZN01 | IL |
| 2023-05-22 | 312-748-3XXX | 3000–3999 | Assigned | ONVOY, LLC | 224C | CHICGOZN01 | IL |
| 2023-05-22 | 312-748-4XXX | 4000–4999 | Assigned | ONVOY, LLC | 224C | CHICGOZN01 | IL |
| 2023-05-22 | 312-748-5XXX | 5000–5999 | Assigned | ONVOY, LLC | 224C | CHICGOZN01 | IL |
| 2023-05-22 | 312-748-6XXX | 6000–6999 | Assigned | ONVOY, LLC | 224C | CHICGOZN01 | IL |
| 2023-05-22 | 312-748-7XXX | 7000–7999 | Assigned | ONVOY, LLC | 224C | CHICGOZN01 | IL |
| 2023-05-22 | 312-748-8XXX | 8000–8999 | Assigned | ONVOY, LLC | 224C | CHICGOZN01 | IL |
| 2023-05-22 | 312-748-9XXX | 9000–9999 | Assigned | ONVOY, LLC | 224C | CHICGOZN01 | IL |
| 2023-05-19 | 312-773-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHICGOZN01 | IL |
| 2023-05-19 | 312-773-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHICGOZN01 | IL |
| 2023-05-19 | 312-773-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHICGOZN01 | IL |
| 2023-05-19 | 312-773-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHICGOZN01 | IL |
| 2023-05-19 | 312-773-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHICGOZN01 | IL |
| 2023-05-19 | 312-773-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHICGOZN01 | IL |
| 2023-05-19 | 312-773-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | CHICGOZN01 | IL |
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.