NumberResearchThousands-blocks in 928-412
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/20/2026
The ten 1,000-number thousand-blocks inside prefix 928-412 and who was initially assigned each. Under pooling these blocks often belong to different carriers — the single prefix-level “assignee” is usually just the pool / code holder, not who holds the numbers. ← all 928 blocks
Most active assignees, all time — NPA 928
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 928-412-0XXX | 0000–0999 | Reserved | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LKHAVASUCY | AZ |
| — | 928-412-1XXX | 1000–1999 | Reserved | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LKHAVASUCY | AZ |
| — | 928-412-2XXX | 2000–2999 | Reserved | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LKHAVASUCY | AZ |
| 2018-09-11 | 928-412-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | LKHAVASUCY | AZ |
| 2006-02-06 | 928-412-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | LKHAVASUCY | AZ |
| 2019-11-07 | 928-412-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | LKHAVASUCY | AZ |
| 2018-04-26 | 928-412-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 6572 | LKHAVASUCY | AZ |
| 2005-03-01 | 928-412-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | LKHAVASUCY | AZ |
| 2018-06-25 | 928-412-8XXX | 8000–8999 | Assigned | ONVOY, LLC - AZ | 630E | LKHAVASUCY | AZ |
| 2019-06-20 | 928-412-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | LKHAVASUCY | 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.