NumberResearchThousands-blocks in 712-484
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/19/2026
The ten 1,000-number thousand-blocks inside prefix 712-484 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 712 blocks
Most active assignees, all time — NPA 712
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 712-484-0XXX | 0000–0999 | Reserved | FRONTIER COMMUNICATIONS OF IOWA, INC. | 1127 | CARSON | IA |
| 2016-05-03 | 712-484-1XXX | 1000–1999 | Assigned | AUREON COMMUNICATIONS, LLC | 444G | CARSON | IA |
| — | 712-484-2XXX | 2000–2999 | Reserved | FRONTIER COMMUNICATIONS OF IOWA, INC. | 1127 | CARSON | IA |
| — | 712-484-3XXX | 3000–3999 | Reserved | FRONTIER COMMUNICATIONS OF IOWA, INC. | 1127 | CARSON | IA |
| 2021-03-29 | 712-484-4XXX | 4000–4999 | Assigned | ONVOY, LLC - IA | 221F | CARSON | IA |
| 2021-03-29 | 712-484-5XXX | 5000–5999 | Assigned | ONVOY, LLC - IA | 221F | CARSON | IA |
| 2019-08-05 | 712-484-6XXX | 6000–6999 | Assigned | INTERSTATE CABLEVISION COMPANY - IA | 860E | CARSON | IA |
| 2017-09-28 | 712-484-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CARSON | IA |
| 2018-10-19 | 712-484-8XXX | 8000–8999 | Assigned | ONVOY, LLC - IA | 221F | CARSON | IA |
| — | 712-484-9XXX | 9000–9999 | Reserved | FRONTIER COMMUNICATIONS OF IOWA, INC. | 1127 | CARSON | IA |
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.