NumberResearchThousands-blocks in 712-335
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 712-335 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 |
|---|---|---|---|---|---|---|---|
| 2007-10-12 | 712-335-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | POCAHONTAS | IA |
| 2020-07-16 | 712-335-1XXX | 1000–1999 | Assigned | NORTHERN IOWA COMMUNICATIONS PARTNERS, LLC - IA | 705H | POCAHONTAS | IA |
| 2008-08-05 | 712-335-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | POCAHONTAS | IA |
| — | 712-335-3XXX | 3000–3999 | Reserved | QWEST CORPORATION | 9631 | POCAHONTAS | IA |
| — | 712-335-4XXX | 4000–4999 | Reserved | QWEST CORPORATION | 9631 | POCAHONTAS | IA |
| — | 712-335-5XXX | 5000–5999 | Reserved | QWEST CORPORATION | 9631 | POCAHONTAS | IA |
| 2016-11-23 | 712-335-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | POCAHONTAS | IA |
| 2009-10-22 | 712-335-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | POCAHONTAS | IA |
| 2010-03-15 | 712-335-8XXX | 8000–8999 | Assigned | MCC TELEPHONY OF IOWA, LLC - IA | 751F | POCAHONTAS | IA |
| 2018-03-05 | 712-335-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | POCAHONTAS | 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.