NumberResearchRecent thousands-block assignments
5 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 937
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 |
|---|---|---|---|---|---|---|---|
| 2017-07-20 | 937-250-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | DAYTON | OH |
| 2017-07-20 | 937-250-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | DAYTON | OH |
| 2017-07-20 | 937-250-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | DAYTON | OH |
| 2017-07-20 | 937-250-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | DAYTON | OH |
| 2017-06-30 | 937-965-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OH | 4863 | DAYTON | OH |
| 2017-06-29 | 937-877-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | TIPP CITY | OH |
| 2017-06-29 | 937-977-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | DAYTON | OH |
| 2017-06-23 | 937-739-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | DAYTON | OH |
| 2017-06-16 | 937-704-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | FRANKLIN | OH |
| 2017-06-15 | 937-400-1XXX | 1000–1999 | Assigned | ONVOY, LLC - OH | 464C | JACKSONCTR | OH |
| 2017-06-13 | 937-551-8XXX | 8000–8999 | Assigned | ONVOY, LLC - OH | 464C | PHILLIPSBG | OH |
| 2017-06-13 | 937-583-6XXX | 6000–6999 | Assigned | ONVOY, LLC - OH | 464C | LEWISBURG | OH |
| 2017-06-13 | 937-634-7XXX | 7000–7999 | Assigned | ONVOY, LLC - OH | 464C | GRATIS | OH |
| 2017-06-13 | 937-669-7XXX | 7000–7999 | Assigned | ONVOY, LLC - OH | 464C | TIPP CITY | OH |
| 2017-06-13 | 937-696-7XXX | 7000–7999 | Assigned | ONVOY, LLC - OH | 464C | FARMERSVL | OH |
| 2017-06-13 | 937-719-5XXX | 5000–5999 | Assigned | ONVOY, LLC - OH | 464C | WESTMILTON | OH |
| 2017-06-13 | 937-735-0XXX | 0000–0999 | Assigned | ONVOY, LLC - OH | 464C | WALEXNDRIA | OH |
| 2017-06-13 | 937-770-6XXX | 6000–6999 | Assigned | ONVOY, LLC - OH | 464C | BROOKVILLE | OH |
| 2017-06-13 | 937-826-2XXX | 2000–2999 | Assigned | ONVOY, LLC - OH | 464C | WOODSTOCK | OH |
| 2017-06-13 | 937-828-3XXX | 3000–3999 | Assigned | ONVOY, LLC - OH | 464C | CATAWBA | OH |
| 2017-06-13 | 937-834-8XXX | 8000–8999 | Assigned | ONVOY, LLC - OH | 464C | MECHANCSBG | OH |
| 2017-06-13 | 937-870-1XXX | 1000–1999 | Assigned | ONVOY, LLC - OH | 464C | NEWLEBANON | OH |
| 2017-06-13 | 937-889-2XXX | 2000–2999 | Assigned | ONVOY, LLC - OH | 464C | LIBERTY | OH |
| 2017-06-13 | 937-915-0XXX | 0000–0999 | Assigned | ONVOY, LLC - OH | 464C | LAURA | OH |
| 2017-06-13 | 937-960-1XXX | 1000–1999 | Assigned | ONVOY, LLC - OH | 464C | TROTWOOD | OH |
| 2017-06-13 | 937-980-2XXX | 2000–2999 | Assigned | ONVOY, LLC - OH | 464C | TROY | OH |
| 2017-06-13 | 937-998-3XXX | 3000–3999 | Assigned | ONVOY, LLC - OH | 464C | ENGLEWOOD | OH |
| 2017-06-12 | 937-200-5XXX | 5000–5999 | Assigned | PAETEC ITEL, LLC | 829J | FAIRBORN | OH |
| 2017-06-02 | 937-300-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | EATON | OH |
| 2017-05-31 | 937-733-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | EATON | OH |
| 2017-05-30 | 937-481-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | WILMINGTON | OH |
| 2017-05-30 | 937-481-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | WILMINGTON | OH |
| 2017-05-24 | 937-489-4XXX | 4000–4999 | Assigned | ONVOY, LLC - OH | 464C | SIDNEY | OH |
| 2017-05-24 | 937-639-1XXX | 1000–1999 | Assigned | ONVOY, LLC - OH | 464C | ANNA | OH |
| 2017-05-24 | 937-821-1XXX | 1000–1999 | Assigned | ONVOY, LLC - OH | 464C | FT LORAMIE | OH |
| 2017-05-24 | 937-858-1XXX | 1000–1999 | Assigned | ONVOY, LLC - OH | 464C | BOTKINS | OH |
| 2017-05-03 | 937-250-0XXX | 0000–0999 | Assigned | CINCINNATI BELL EXTENDED TERRITORIES LLC - OH | 309B | DAYTON | OH |
| 2017-05-01 | 937-230-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - OH | 001F | MILFORDCTR | OH |
| 2017-05-01 | 937-230-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - OH | 001F | MILFORDCTR | OH |
| 2017-05-01 | 937-871-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - OH | 001F | DANVILLE | OH |
| 2017-04-28 | 937-315-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - OH | 001F | MEDWAY | OH |
| 2017-04-28 | 937-530-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - OH | 001F | MSBGWCRLTN | OH |
| 2017-04-28 | 937-849-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - OH | 001F | MEDWAY | OH |
| 2017-04-11 | 937-965-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | DAYTON | OH |
| 2017-04-10 | 937-797-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BEAVERCREK | OH |
| 2017-04-03 | 937-965-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | DAYTON | OH |
| 2017-04-03 | 937-965-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | DAYTON | OH |
| 2017-04-03 | 937-993-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | DAYTON | OH |
| 2017-04-03 | 937-993-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | DAYTON | OH |
| 2017-04-03 | 937-993-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | DAYTON | OH |
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.