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
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2022-02-24 | 928-836-3XXX | 3000–3999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | HEBER | AZ |
| 2022-02-17 | 928-534-2XXX | 2000–2999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | SAFFORD | AZ |
| 2022-02-17 | 928-622-8XXX | 8000–8999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | FLAGSTAFF | AZ |
| 2022-02-16 | 928-624-5XXX | 5000–5999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | QUARTZSITE | AZ |
| 2022-02-16 | 928-625-5XXX | 5000–5999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | PARKER DAM | AZ |
| 2022-02-16 | 928-743-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | BOUSE | AZ |
| 2022-02-16 | 928-876-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | EHRENBERG | AZ |
| 2022-02-15 | 928-332-5XXX | 5000–5999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | WHITERIVER | AZ |
| 2022-02-15 | 928-439-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | DUNCAN | AZ |
| 2022-02-15 | 928-744-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | ALPINE | AZ |
| 2022-02-15 | 928-933-8XXX | 8000–8999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | PINETOP | AZ |
| 2022-02-14 | 928-249-5XXX | 5000–5999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | LKMHVRNCHS | AZ |
| 2022-02-14 | 928-252-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | LKPLEASANT | AZ |
| 2022-02-10 | 928-664-2XXX | 2000–2999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | CIBOLA | AZ |
| 2022-02-10 | 928-746-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | HARQUHLVLY | AZ |
| 2022-02-10 | 928-786-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | HYDER | AZ |
| 2022-02-10 | 928-843-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | SOMERTON | AZ |
| 2022-02-10 | 928-886-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | ST JOHNS | AZ |
| 2022-02-08 | 928-258-3XXX | 3000–3999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | AGUILA | AZ |
| 2022-02-08 | 928-292-8XXX | 8000–8999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | CLIFTON | AZ |
| 2022-02-08 | 928-463-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | PRESCOTT | AZ |
| 2022-02-08 | 928-822-4XXX | 4000–4999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | FREDONIA | AZ |
| 2022-02-08 | 928-966-3XXX | 3000–3999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | SAN CARLOS | AZ |
| 2022-02-02 | 928-464-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | WICKENBURG | AZ |
| 2022-02-01 | 928-665-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | GRANDCNYON | AZ |
| 2022-01-14 | 928-872-3XXX | 3000–3999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | BULLHDCYN | AZ |
| 2022-01-13 | 928-878-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | GILA BEND | AZ |
| 2022-01-10 | 928-546-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | BULLHEADCY | AZ |
| 2022-01-08 | 928-732-8XXX | 8000–8999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | LKHAVASUCY | AZ |
| 2021-07-07 | 928-378-4XXX | 4000–4999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | ROOSEVLTLK | AZ |
| 2021-06-18 | 928-393-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | PIMA | AZ |
| 2021-06-08 | 928-892-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | SHOW LOW | AZ |
| 2021-06-04 | 928-397-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | CASTLEROCK | AZ |
| 2021-06-02 | 928-898-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | KINGMAN | AZ |
| 2021-05-07 | 928-866-2XXX | 2000–2999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | MESQUITCRK | AZ |
| 2020-11-05 | 928-837-4XXX | 4000–4999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | YUCCA | 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.