NumberResearchThousands-blocks in 712-339
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 712-339 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 |
|---|---|---|---|---|---|---|---|
| — | 712-339-0XXX | 0000–0999 | Reserved | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | SPIRITLAKE | IA |
| — | 712-339-1XXX | 1000–1999 | Reserved | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | SPIRITLAKE | IA |
| 2015-10-15 | 712-339-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | SPIRITLAKE | IA |
| 2017-05-15 | 712-339-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | SPIRITLAKE | IA |
| 2020-01-31 | 712-339-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | SPIRITLAKE | IA |
| — | 712-339-5XXX | 5000–5999 | Reserved | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | SPIRITLAKE | IA |
| 2014-05-23 | 712-339-6XXX | 6000–6999 | Assigned | PREMIER COMMUNICATIONS, INC. - IA | 904D | SPIRITLAKE | IA |
| 2009-10-26 | 712-339-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SPIRITLAKE | IA |
| — | 712-339-8XXX | 8000–8999 | Available | SPIRITLAKE | IA | ||
| 2005-03-21 | 712-339-9XXX | 9000–9999 | Assigned | MCC TELEPHONY OF IOWA, LLC - IA | 751F | SPIRITLAKE | 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.