NumberResearchRecent thousands-block assignments
4 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.
Most active assignees, last 30 days — NPA 641
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2017-04-07 | 641-218-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | KNOXVILLE | IA |
| 2017-04-07 | 641-223-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | OSCEOLA | IA |
| 2017-04-07 | 641-278-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CRESTON | IA |
| 2017-04-07 | 641-528-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MALCOM | IA |
| 2017-04-07 | 641-541-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SIGOURNEY | IA |
| 2017-04-07 | 641-819-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | FAIRFIELD | IA |
| 2017-04-07 | 641-931-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ALBIA | IA |
| 2017-04-06 | 641-244-9XXX | 9000–9999 | Assigned | AUREON COMMUNICATIONS, LLC | 444G | OTTUMWA | IA |
| 2017-04-05 | 641-278-2XXX | 2000–2999 | Assigned | IOWA RSA 2 LIMITED PARTNERSHIP DBA CHAT MOBILITY | 9572 | CRESTON | IA |
| 2017-04-05 | 641-329-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | BAILEY | IA |
| 2017-04-05 | 641-790-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | SIGOURNEY | IA |
| 2017-03-16 | 641-426-1XXX | 1000–1999 | Assigned | OMNITEL COMMUNICATIONS, INC. - IA | 3620 | CHARLES CY | IA |
| 2017-03-16 | 641-715-8XXX | 8000–8999 | Assigned | OMNITEL COMMUNICATIONS, INC. - IA | 3620 | CHARLES CY | IA |
| 2017-03-02 | 641-347-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | AFTON | IA |
| 2017-03-02 | 641-742-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ADAIR | IA |
| 2017-03-02 | 641-877-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | HUMESTON | IA |
| 2017-02-28 | 641-212-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | GREENFIELD | IA |
| 2017-02-28 | 641-456-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | HAMPTON | IA |
| 2017-02-28 | 641-473-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | GLADBROOK | IA |
| 2017-02-28 | 641-499-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | GARWIN | IA |
| 2017-02-28 | 641-635-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | HARPER | IA |
| 2017-02-28 | 641-653-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | HEDRICK | IA |
| 2017-02-28 | 641-747-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | GUTHRIECTR | IA |
| 2017-02-28 | 641-823-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | GREENE | IA |
| 2017-02-28 | 641-924-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | GARNER | IA |
| 2017-02-27 | 641-247-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | FONTANELLE | IA |
| 2017-02-27 | 641-433-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WHAT CHEER | IA |
| 2017-02-27 | 641-452-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | UNIONVILLE | IA |
| 2017-02-27 | 641-655-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | FARSON | IA |
| 2017-02-27 | 641-862-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WILLIAMSON | IA |
| 2017-02-27 | 641-869-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WELLSBURG | IA |
| 2017-02-27 | 641-933-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | FREMONT | IA |
| 2017-02-27 | 641-949-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | TRACY | IA |
| 2017-02-24 | 641-481-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | TOLEDO | IA |
| 2017-02-24 | 641-737-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | STACYVILLE | IA |
| 2017-02-24 | 641-772-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | TINGLEY | IA |
| 2017-02-23 | 641-244-5XXX | 5000–5999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | OTTUMWA | IA |
| 2017-02-23 | 641-339-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SHANNON CY | IA |
| 2017-02-23 | 641-535-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | RUSSELL | IA |
| 2017-02-23 | 641-541-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | SIGOURNEY | IA |
| 2017-02-23 | 641-599-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ST ANSGAR | IA |
| 2017-02-23 | 641-627-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | OTLEY | IA |
| 2017-02-23 | 641-632-1XXX | 1000–1999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ROSE HILL | IA |
| 2017-02-23 | 641-651-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PELLA | IA |
| 2017-02-23 | 641-898-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SEYMOUR | IA |
| 2017-02-22 | 641-223-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | OSCEOLA | IA |
| 2017-02-22 | 641-335-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PRESCOTT | IA |
| 2017-02-22 | 641-337-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ORIENT | IA |
| 2017-02-22 | 641-381-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | NORTHWOOD | IA |
| 2017-02-22 | 641-435-0XXX | 0000–0999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | NASHUA | 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.