NumberResearchThousands-blocks in 712-380
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 712-380 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
New assignments by month
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 712-380-0XXX | 0000–0999 | Reserved | UNITED STATES CELLULAR - IA | 6266 | ESTHERVL | IA |
| 2009-10-22 | 712-380-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | ESTHERVL | IA |
| — | 712-380-2XXX | 2000–2999 | Assigned (pending) | ESTHERVL | IA | ||
| 2016-08-03 | 712-380-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ESTHERVL | IA |
| 2015-02-12 | 712-380-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ESTHERVL | IA |
| 2025-04-21 | 712-380-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ESTHERVL | IA |
| 2012-06-14 | 712-380-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - IA | 8344 | ESTHERVL | IA |
| 2016-11-22 | 712-380-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ESTHERVL | IA |
| 2013-07-31 | 712-380-8XXX | 8000–8999 | Assigned | MCC TELEPHONY OF IOWA, LLC - IA | 751F | ESTHERVL | IA |
| 2009-10-26 | 712-380-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ESTHERVL | 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.