NumberResearchRecent thousands-block assignments
2 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, last 30 days — NPA 623
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2022-08-31 | 623-324-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | PHOENIX | AZ |
| 2022-08-31 | 623-324-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | PHOENIX | AZ |
| 2022-08-31 | 623-324-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | PHOENIX | AZ |
| 2022-08-25 | 623-286-2XXX | 2000–2999 | Assigned | ONVOY, LLC - AZ | 630E | PHOENIX | AZ |
| 2022-08-25 | 623-286-3XXX | 3000–3999 | Assigned | ONVOY, LLC - AZ | 630E | PHOENIX | AZ |
| 2022-07-15 | 623-294-0XXX | 0000–0999 | Assigned | ONVOY, LLC - AZ | 630E | PHOENIX | AZ |
| 2022-07-15 | 623-294-1XXX | 1000–1999 | Assigned | ONVOY, LLC - AZ | 630E | PHOENIX | AZ |
| 2022-07-15 | 623-294-2XXX | 2000–2999 | Assigned | ONVOY, LLC - AZ | 630E | PHOENIX | AZ |
| 2022-07-15 | 623-294-3XXX | 3000–3999 | Assigned | ONVOY, LLC - AZ | 630E | PHOENIX | AZ |
| 2022-07-15 | 623-294-4XXX | 4000–4999 | Assigned | ONVOY, LLC - AZ | 630E | PHOENIX | AZ |
| 2022-07-15 | 623-294-5XXX | 5000–5999 | Assigned | ONVOY, LLC - AZ | 630E | PHOENIX | AZ |
| 2022-07-15 | 623-294-6XXX | 6000–6999 | Assigned | ONVOY, LLC - AZ | 630E | PHOENIX | AZ |
| 2022-07-15 | 623-294-7XXX | 7000–7999 | Assigned | ONVOY, LLC - AZ | 630E | PHOENIX | AZ |
| 2022-07-15 | 623-294-8XXX | 8000–8999 | Assigned | ONVOY, LLC - AZ | 630E | PHOENIX | AZ |
| 2022-07-15 | 623-294-9XXX | 9000–9999 | Assigned | ONVOY, LLC - AZ | 630E | PHOENIX | AZ |
| 2022-07-14 | 623-286-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | PHOENIX | AZ |
| 2022-07-14 | 623-286-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | PHOENIX | AZ |
| 2022-07-14 | 623-286-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | PHOENIX | AZ |
| 2022-07-14 | 623-286-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | PHOENIX | AZ |
| 2022-07-14 | 623-286-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | PHOENIX | AZ |
| 2022-07-12 | 623-287-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | PHOENIX | AZ |
| 2022-07-12 | 623-287-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | PHOENIX | AZ |
| 2022-07-12 | 623-287-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | PHOENIX | AZ |
| 2022-07-12 | 623-287-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | PHOENIX | AZ |
| 2022-07-12 | 623-287-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | PHOENIX | AZ |
| 2022-06-28 | 623-715-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PHOENIX | AZ |
| 2022-06-28 | 623-715-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PHOENIX | AZ |
| 2022-06-28 | 623-715-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PHOENIX | AZ |
| 2022-06-28 | 623-715-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PHOENIX | AZ |
| 2022-06-28 | 623-715-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | PHOENIX | AZ |
| 2022-06-14 | 623-287-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | PHOENIX | AZ |
| 2022-06-14 | 623-287-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | PHOENIX | AZ |
| 2022-06-14 | 623-287-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | PHOENIX | AZ |
| 2022-06-14 | 623-287-3XXX | 3000–3999 | Assigned | COMMIO, LLC | 939H | PHOENIX | AZ |
| 2022-06-14 | 623-287-4XXX | 4000–4999 | Assigned | COMMIO, LLC | 939H | PHOENIX | AZ |
| 2022-06-03 | 623-304-0XXX | 0000–0999 | Assigned | ONVOY, LLC - AZ | 630E | PHOENIX | AZ |
| 2022-06-03 | 623-304-1XXX | 1000–1999 | Assigned | ONVOY, LLC - AZ | 630E | PHOENIX | AZ |
| 2022-06-03 | 623-304-2XXX | 2000–2999 | Assigned | ONVOY, LLC - AZ | 630E | PHOENIX | AZ |
| 2022-06-03 | 623-304-3XXX | 3000–3999 | Assigned | ONVOY, LLC - AZ | 630E | PHOENIX | AZ |
| 2022-06-03 | 623-304-4XXX | 4000–4999 | Assigned | ONVOY, LLC - AZ | 630E | PHOENIX | AZ |
| 2022-06-03 | 623-304-5XXX | 5000–5999 | Assigned | ONVOY, LLC - AZ | 630E | PHOENIX | AZ |
| 2022-06-03 | 623-304-6XXX | 6000–6999 | Assigned | ONVOY, LLC - AZ | 630E | PHOENIX | AZ |
| 2022-06-03 | 623-304-7XXX | 7000–7999 | Assigned | ONVOY, LLC - AZ | 630E | PHOENIX | AZ |
| 2022-06-03 | 623-304-8XXX | 8000–8999 | Assigned | ONVOY, LLC - AZ | 630E | PHOENIX | AZ |
| 2022-06-03 | 623-304-9XXX | 9000–9999 | Assigned | ONVOY, LLC - AZ | 630E | PHOENIX | AZ |
| 2022-05-12 | 623-276-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | PHOENIX | AZ |
| 2022-05-12 | 623-276-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | PHOENIX | AZ |
| 2022-05-12 | 623-276-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | PHOENIX | AZ |
| 2022-05-12 | 623-276-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | PHOENIX | AZ |
| 2022-05-12 | 623-276-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | PHOENIX | AZ |
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.