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 |
|---|---|---|---|---|---|---|---|
| 2004-12-28 | 937-451-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OH | 4863 | PIQUA | OH |
| 2004-12-28 | 937-551-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OH | 4863 | PHILLIPSBG | OH |
| 2004-12-28 | 937-684-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OH | 4863 | DAYTON | OH |
| 2004-12-28 | 937-771-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OH | 4863 | ENGLEWOOD | OH |
| 2004-12-16 | 937-502-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OH | 4863 | XENIA | OH |
| 2004-12-16 | 937-510-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OH | 4863 | DAYTON | OH |
| 2004-12-16 | 937-573-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OH | 4863 | TROY | OH |
| 2004-12-10 | 937-490-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OH | 4863 | BEAVERCREK | OH |
| 2004-12-10 | 937-490-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OH | 4863 | BEAVERCREK | OH |
| 2004-12-10 | 937-912-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OH | 4863 | BEAVERCREK | OH |
| 2004-12-09 | 937-531-1XXX | 1000–1999 | Assigned | LEVEL 3 TELECOM OF OHIO, LLC - OH | 7460 | DAYTON | OH |
| 2004-12-09 | 937-531-7XXX | 7000–7999 | Assigned | LEVEL 3 TELECOM OF OHIO, LLC - OH | 7460 | DAYTON | OH |
| 2004-11-30 | 937-403-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HILLSBORO | OH |
| 2004-11-30 | 937-403-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HILLSBORO | OH |
| 2004-11-24 | 937-568-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | SO VIENNA | OH |
| 2004-11-10 | 937-306-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OH | 4863 | BEAVERCREK | OH |
| 2004-11-05 | 937-670-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | GREENVILLE | OH |
| 2004-11-04 | 937-658-6XXX | 6000–6999 | Assigned | GOLDSTAR COMMUNICATIONS, LLC - OH | 9133 | SIDNEY | OH |
| 2004-10-29 | 937-280-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | VANDALIA | OH |
| 2004-10-29 | 937-284-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | SPRINGFLD | OH |
| 2004-10-29 | 937-306-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | BEAVERCREK | OH |
| 2004-10-29 | 937-343-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | FAIRBORN | OH |
| 2004-10-29 | 937-347-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | XENIA | OH |
| 2004-10-29 | 937-350-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | CENTERVLLE | OH |
| 2004-10-29 | 937-353-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | MSBGWCRLTN | OH |
| 2004-10-29 | 937-381-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | PIQUA | OH |
| 2004-10-29 | 937-771-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | ENGLEWOOD | OH |
| 2004-10-29 | 937-875-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | TROY | OH |
| 2004-09-30 | 937-396-3XXX | 3000–3999 | Assigned | LEVEL 3 TELECOM OF OHIO, LLC - OH | 7460 | DAYTON | OH |
| 2004-09-28 | 937-790-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OH | 4863 | FRANKLIN | OH |
| 2004-09-28 | 937-886-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OH | 4863 | CENTERVLLE | OH |
| 2004-09-03 | 937-248-0XXX | 0000–0999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | TROTWOOD | OH |
| 2004-09-03 | 937-310-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | BELLBROOK | OH |
| 2004-09-03 | 937-319-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | YLSPGCLFTN | OH |
| 2004-09-03 | 937-340-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | ENON | OH |
| 2004-09-03 | 937-364-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | LYNCHBURG | OH |
| 2004-09-03 | 937-405-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | NEWCARLISL | OH |
| 2004-09-03 | 937-462-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | SOCHARLETN | OH |
| 2004-09-03 | 937-583-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | LEWISBURG | OH |
| 2004-09-03 | 937-587-0XXX | 0000–0999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | PEEBLES | OH |
| 2004-09-03 | 937-634-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | GRATIS | OH |
| 2004-09-03 | 937-655-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | WILMINGTON | OH |
| 2004-09-03 | 937-675-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | JAMESTOWN | OH |
| 2004-09-03 | 937-687-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | NEWLEBANON | OH |
| 2004-09-03 | 937-698-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | WESTMILTON | OH |
| 2004-09-03 | 937-770-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | BROOKVILLE | OH |
| 2004-09-03 | 937-779-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | WEST UNION | OH |
| 2004-09-03 | 937-783-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | BLANCHESTR | OH |
| 2004-09-03 | 937-834-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | MECHANCSBG | OH |
| 2004-09-03 | 937-839-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | WALEXNDRIA | 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.