NumberResearchRecent thousands-block assignments
0 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, all time — NPA 928
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-03-01 | 928-324-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | SAFFORD | AZ |
| 2024-03-01 | 928-498-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | SNOWFLAKE | AZ |
| 2024-03-01 | 928-508-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | YUMA | AZ |
| 2024-03-01 | 928-508-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | YUMA | AZ |
| 2024-03-01 | 928-508-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | YUMA | AZ |
| 2024-03-01 | 928-622-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | FLAGSTAFF | AZ |
| 2024-03-01 | 928-666-5XXX | 5000–5999 | Assigned | COMMIO, LLC | 939H | FLAGSTAFF | AZ |
| 2024-03-01 | 928-880-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | KINGMAN | AZ |
| 2022-11-07 | 928-495-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | PRESCOTT | AZ |
| 2022-11-07 | 928-495-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | PRESCOTT | AZ |
| 2022-11-07 | 928-495-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | PRESCOTT | AZ |
| 2022-11-04 | 928-534-4XXX | 4000–4999 | Assigned | COMMIO, LLC | 939H | SAFFORD | AZ |
| 2022-11-04 | 928-534-5XXX | 5000–5999 | Assigned | COMMIO, LLC | 939H | SAFFORD | AZ |
| 2022-11-04 | 928-534-6XXX | 6000–6999 | Assigned | COMMIO, LLC | 939H | SAFFORD | AZ |
| 2022-11-04 | 928-867-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | KINGMAN | AZ |
| 2022-11-04 | 928-867-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | KINGMAN | AZ |
| 2022-11-04 | 928-867-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | KINGMAN | AZ |
| 2022-08-23 | 928-438-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | FLAGSTAFF | AZ |
| 2022-08-10 | 928-390-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | SOMERTON | AZ |
| 2022-08-10 | 928-406-6XXX | 6000–6999 | Assigned | COMMIO, LLC | 939H | WINSLOW | AZ |
| 2022-08-10 | 928-534-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | SAFFORD | AZ |
| 2022-08-10 | 928-596-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | PAYSON | AZ |
| 2022-06-28 | 928-320-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | PIMA | AZ |
| 2022-06-28 | 928-464-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | WICKENBURG | AZ |
| 2022-06-28 | 928-701-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | GLOBE | AZ |
| 2022-06-28 | 928-732-7XXX | 7000–7999 | Assigned | COMMIO, LLC | 939H | LKHAVASUCY | AZ |
| 2022-06-27 | 928-439-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | DUNCAN | AZ |
| 2022-05-16 | 928-867-5XXX | 5000–5999 | Assigned | COMMIO, LLC | 939H | KINGMAN | AZ |
| 2021-09-24 | 928-456-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | FLAGSTAFF | AZ |
| 2021-09-24 | 928-456-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | FLAGSTAFF | AZ |
| 2021-09-24 | 928-456-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | FLAGSTAFF | AZ |
| 2021-09-22 | 928-423-5XXX | 5000–5999 | Assigned | COMMIO, LLC | 939H | FLAGSTAFF | AZ |
| 2021-09-22 | 928-423-6XXX | 6000–6999 | Assigned | COMMIO, LLC | 939H | FLAGSTAFF | AZ |
| 2021-09-16 | 928-426-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | PRESCOTT | AZ |
| 2021-09-16 | 928-426-6XXX | 6000–6999 | Assigned | COMMIO, LLC | 939H | PRESCOTT | AZ |
| 2021-09-16 | 928-426-7XXX | 7000–7999 | Assigned | COMMIO, LLC | 939H | PRESCOTT | AZ |
| 2021-09-16 | 928-426-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | PRESCOTT | AZ |
| 2021-09-13 | 928-498-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | SNOWFLAKE | AZ |
| 2021-09-13 | 928-498-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | SNOWFLAKE | AZ |
| 2021-09-13 | 928-498-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | SNOWFLAKE | AZ |
| 2021-08-04 | 928-593-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | SEDONA | AZ |
| 2021-08-04 | 928-593-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | SEDONA | AZ |
| 2021-08-04 | 928-593-3XXX | 3000–3999 | Assigned | COMMIO, LLC | 939H | SEDONA | AZ |
| 2021-08-04 | 928-977-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | YUMA | AZ |
| 2021-08-04 | 928-977-3XXX | 3000–3999 | Assigned | COMMIO, LLC | 939H | YUMA | AZ |
| 2021-08-04 | 928-977-4XXX | 4000–4999 | Assigned | COMMIO, LLC | 939H | YUMA | AZ |
| 2021-08-04 | 928-977-5XXX | 5000–5999 | Assigned | COMMIO, LLC | 939H | YUMA | AZ |
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.