NumberResearchThousands-blocks in 641-217
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 641-217 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 641 blocks
Most active assignees, all time — NPA 641
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2012-07-12 | 641-217-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | CHARITON | IA |
| 2015-09-02 | 641-217-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | CHARITON | IA |
| 2017-04-24 | 641-217-2XXX | 2000–2999 | Assigned | AUREON COMMUNICATIONS, LLC | 444G | CHARITON | IA |
| 2017-06-12 | 641-217-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CHARITON | IA |
| 2012-01-12 | 641-217-4XXX | 4000–4999 | Assigned | WINDSTREAM IOWA COMMUNICATIONS, INC. | 1178 | CHARITON | IA |
| 2018-05-02 | 641-217-5XXX | 5000–5999 | Assigned | INTEGRATED PATH COMMUNCATIONS, LLC - IA | 544H | CHARITON | IA |
| 2019-11-01 | 641-217-6XXX | 6000–6999 | Assigned | ONVOY, LLC - IA | 221F | CHARITON | IA |
| 2017-02-09 | 641-217-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CHARITON | IA |
| 2010-03-02 | 641-217-8XXX | 8000–8999 | Assigned | MCC TELEPHONY OF IOWA, LLC - IA | 751F | CHARITON | IA |
| 2019-11-04 | 641-217-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | CHARITON | IA |
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.