NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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 303
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-08-18 | 303-719-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | DEER TRAIL | CO |
| 2026-03-16 | 303-622-7XXX | 7000–7999 | Assigned | AHOI LLC | 883K | STRASBURG | CO |
| 2026-03-11 | 303-719-9XXX | 9000–9999 | Assigned | AHOI LLC | 883K | DEER TRAIL | CO |
| 2026-03-02 | 303-354-3XXX | 3000–3999 | Assigned | AHOI LLC | 883K | DENVER | CO |
| 2025-11-13 | 303-823-3XXX | 3000–3999 | Assigned | AHOI LLC | 883K | ALLNSPKLYN | CO |
| 2025-09-15 | 303-823-1XXX | 1000–1999 | Assigned | EXIANT COMMUNICATIONS LLC | 114J | ALLNSPKLYN | CO |
| 2025-06-25 | 303-316-1XXX | 1000–1999 | Assigned | NUSO, LLC | 732J | DENVER | CO |
| 2025-04-24 | 303-622-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | STRASBURG | CO |
| 2025-04-16 | 303-719-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | DEER TRAIL | CO |
| 2025-01-16 | 303-392-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2025-01-16 | 303-392-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2025-01-16 | 303-392-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2025-01-16 | 303-392-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2025-01-16 | 303-392-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2025-01-16 | 303-392-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2025-01-16 | 303-392-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2025-01-16 | 303-392-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2025-01-16 | 303-392-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2025-01-16 | 303-392-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DENVER | CO |
| 2025-01-10 | 303-622-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | STRASBURG | CO |
| 2025-01-08 | 303-647-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CO | 026D | DECKERS | CO |
| 2024-12-31 | 303-732-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | KEENESBURG | CO |
| 2024-11-20 | 303-547-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
| 2024-11-20 | 303-955-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
| 2024-08-26 | 303-303-0XXX | 0000–0999 | Assigned | HD CARRIER LLC | 321J | DENVER | CO |
| 2024-08-26 | 303-303-1XXX | 1000–1999 | Assigned | HD CARRIER LLC | 321J | DENVER | CO |
| 2024-08-26 | 303-303-2XXX | 2000–2999 | Assigned | HD CARRIER LLC | 321J | DENVER | CO |
| 2024-08-26 | 303-303-3XXX | 3000–3999 | Assigned | HD CARRIER LLC | 321J | DENVER | CO |
| 2024-08-26 | 303-303-4XXX | 4000–4999 | Assigned | HD CARRIER LLC | 321J | DENVER | CO |
| 2024-08-26 | 303-303-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | DENVER | CO |
| 2024-08-26 | 303-303-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | DENVER | CO |
| 2024-08-26 | 303-303-7XXX | 7000–7999 | Assigned | HD CARRIER LLC | 321J | DENVER | CO |
| 2024-08-26 | 303-303-8XXX | 8000–8999 | Assigned | HD CARRIER LLC | 321J | DENVER | CO |
| 2024-08-26 | 303-303-9XXX | 9000–9999 | Assigned | HD CARRIER LLC | 321J | DENVER | CO |
| 2024-05-28 | 303-648-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | DENVER | CO |
| 2024-05-28 | 303-648-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | DENVER | CO |
| 2024-02-22 | 303-348-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | DENVER | CO |
| 2024-02-22 | 303-401-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | DENVER | CO |
| 2024-02-22 | 303-401-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | DENVER | CO |
| 2024-02-22 | 303-453-7XXX | 7000–7999 | Assigned | COMMIO, LLC | 939H | DENVER | CO |
| 2024-02-22 | 303-661-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | DENVER | CO |
| 2024-02-22 | 303-727-4XXX | 4000–4999 | Assigned | COMMIO, LLC | 939H | DENVER | CO |
| 2024-02-22 | 303-967-3XXX | 3000–3999 | Assigned | COMMIO, LLC | 939H | DENVER | CO |
| 2024-02-07 | 303-848-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LONGMONT | CO |
| 2023-12-05 | 303-834-6XXX | 6000–6999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | LONGMONT | CO |
| 2023-08-31 | 303-900-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CO | 026D | GEORGETOWN | CO |
| 2023-08-29 | 303-879-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
| 2023-08-15 | 303-879-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
| 2023-08-15 | 303-879-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
| 2023-08-15 | 303-879-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CO | 026D | DENVER | CO |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.