NumberResearchRecent thousands-block assignments
9 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 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 |
|---|---|---|---|---|---|---|---|
| 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 | 515-215-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | NEVADA | 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 | 515-646-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | LEDYARD | 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 | 515-834-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | DE SOTO | IA |
| 2017-02-15 | 515-852-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DOWS | IA |
| 2017-02-15 | 515-992-5XXX | 5000–5999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DALLAS CTR | IA |
| 2017-02-09 | 515-375-3XXX | 3000–3999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | BRADGATE | IA |
| 2017-02-09 | 515-383-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CAMBRIDGE | IA |
| 2017-02-09 | 515-433-3XXX | 3000–3999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | BOONE | IA |
| 2017-02-09 | 515-676-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | BOUTON | IA |
| 2017-02-09 | 515-851-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CLARION | IA |
| 2017-02-09 | 515-855-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | BUCKEYE | IA |
| 2017-02-07 | 515-715-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | AMES | IA |
| 2017-02-03 | 515-368-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HUMBOLDT | IA |
| 2017-02-02 | 515-776-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DES MOINES | IA |
| 2017-02-01 | 515-686-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | AMES | IA |
| 2017-01-31 | 515-381-0XXX | 0000–0999 | Assigned | MCC TELEPHONY OF IOWA, LLC - IA | 751F | DES MOINES | IA |
| 2017-01-20 | 515-236-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - IA | 985E | BOONE | IA |
| 2017-01-13 | 515-336-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | DES MOINES | IA |
| 2017-01-13 | 515-381-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | DES MOINES | IA |
| 2017-01-13 | 515-381-3XXX | 3000–3999 | Assigned | MCC TELEPHONY OF IOWA, LLC - IA | 751F | DES MOINES | IA |
| 2016-12-16 | 515-300-9XXX | 9000–9999 | Assigned | QWEST CORPORATION | 9631 | DES MOINES | IA |
| 2016-12-13 | 515-739-8XXX | 8000–8999 | Assigned | OMNITEL COMMUNICATIONS, INC. - IA | 3620 | WINTERSET | IA |
| 2016-12-13 | 515-739-9XXX | 9000–9999 | Assigned | OMNITEL COMMUNICATIONS, INC. - IA | 3620 | WINTERSET | IA |
| 2016-12-07 | 515-219-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | ADEL | IA |
| 2016-12-07 | 515-219-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | ADEL | IA |
| 2016-11-16 | 515-715-4XXX | 4000–4999 | Assigned | ONVOY, LLC - IA | 221F | AMES | IA |
| 2016-11-14 | 515-380-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DES MOINES | IA |
| 2016-10-31 | 515-300-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DES MOINES | 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.