NumberResearchRecent thousands-block assignments
0 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, all time — NPA 515
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 |
|---|---|---|---|---|---|---|---|
| 2023-03-06 | 515-644-9XXX | 9000–9999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DES MOINES | IA |
| 2022-06-13 | 515-567-3XXX | 3000–3999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | AMES | IA |
| 2020-04-06 | 515-416-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DES MOINES | IA |
| 2019-05-06 | 515-706-5XXX | 5000–5999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DES MOINES | IA |
| 2018-12-28 | 515-452-3XXX | 3000–3999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DES MOINES | IA |
| 2018-12-28 | 515-452-4XXX | 4000–4999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DES MOINES | IA |
| 2017-07-07 | 515-350-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DES MOINES | IA |
| 2017-07-07 | 515-381-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DES MOINES | IA |
| 2017-06-07 | 515-320-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ALGONA | IA |
| 2017-06-06 | 515-325-9XXX | 9000–9999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | BLAIRSBURG | IA |
| 2017-06-06 | 515-735-4XXX | 4000–4999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | AMES | IA |
| 2017-03-29 | 515-531-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | GRANGER | IA |
| 2017-03-02 | 515-219-5XXX | 5000–5999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ADEL | IA |
| 2017-03-02 | 515-552-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | INDIANOLA | IA |
| 2017-02-28 | 515-368-5XXX | 5000–5999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | HUMBOLDT | IA |
| 2017-02-28 | 515-373-9XXX | 9000–9999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | GILMORE CY | IA |
| 2017-02-28 | 515-738-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | GRAND JCT | IA |
| 2017-02-27 | 515-206-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | FORT DODGE | IA |
| 2017-02-27 | 515-585-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | VAN METER | IA |
| 2017-02-27 | 515-606-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WEBSTER CY | IA |
| 2017-02-27 | 515-679-8XXX | 8000–8999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WESLEY | IA |
| 2017-02-27 | 515-705-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WINTERSET | IA |
| 2017-02-27 | 515-854-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WILLIAMS | IA |
| 2017-02-24 | 515-335-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | STORY CITY | IA |
| 2017-02-24 | 515-454-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | STUART | IA |
| 2017-02-24 | 515-477-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SWEA CITY | IA |
| 2017-02-23 | 515-388-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ROLAND | IA |
| 2017-02-23 | 515-436-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | RIPPEY | IA |
| 2017-02-23 | 515-465-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PERRY | IA |
| 2017-02-23 | 515-685-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SLATER | IA |
| 2017-02-23 | 515-824-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | RENWICK | IA |
| 2017-02-23 | 515-966-3XXX | 3000–3999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | RUNNELLS | IA |
| 2017-02-22 | 515-328-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | RANDALL | IA |
| 2017-02-22 | 515-420-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | POLK CITY | IA |
| 2017-02-22 | 515-526-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | REDFIELD | IA |
| 2017-02-22 | 515-848-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PLEASANTVL | IA |
| 2017-02-22 | 515-972-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | OTHO | IA |
| 2017-02-22 | 515-994-4XXX | 4000–4999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PRAIRIE CY | IA |
| 2017-02-21 | 515-387-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MAXWELL | IA |
| 2017-02-21 | 515-434-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MCCALLSBG | IA |
| 2017-02-17 | 515-582-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MADRID | IA |
| 2017-02-17 | 515-882-8XXX | 8000–8999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | LUVERNE | IA |
| 2017-02-16 | 515-367-8XXX | 8000–8999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ELKHART | IA |
| 2017-02-16 | 515-517-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | EARLHAM | IA |
| 2017-02-16 | 515-603-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | EAGLEGROVE | IA |
| 2017-02-16 | 515-750-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DAWSON | IA |
| 2017-02-16 | 515-827-8XXX | 8000–8999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | JEWELL | IA |
| 2017-02-15 | 515-674-5XXX | 5000–5999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | COLFAX | IA |
| 2017-02-15 | 515-789-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DEXTER | IA |
| 2017-02-15 | 515-852-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DOWS | 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.