NumberResearchRecent thousands-block assignments
3 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 939
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 |
|---|---|---|---|---|---|---|---|
| 2023-05-31 | 939-320-3XXX | 3000–3999 | Assigned | LUMEN TECHNOLOGIES PUERTO RICO, LLC | 091J | SANTURCE | PR |
| 2023-05-30 | 939-370-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARROYO | PR |
| 2023-05-30 | 939-370-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARROYO | PR |
| 2023-05-30 | 939-370-2XXX | 2000–2999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARROYO | PR |
| 2023-05-30 | 939-370-3XXX | 3000–3999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARROYO | PR |
| 2023-05-30 | 939-370-4XXX | 4000–4999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARROYO | PR |
| 2023-05-30 | 939-370-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARROYO | PR |
| 2023-05-30 | 939-370-6XXX | 6000–6999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARROYO | PR |
| 2023-05-30 | 939-370-7XXX | 7000–7999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARROYO | PR |
| 2023-05-30 | 939-370-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARROYO | PR |
| 2023-05-30 | 939-370-9XXX | 9000–9999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARROYO | PR |
| 2023-05-30 | 939-372-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | AGUADILLA | PR |
| 2023-05-30 | 939-372-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | AGUADILLA | PR |
| 2023-05-30 | 939-372-2XXX | 2000–2999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | AGUADILLA | PR |
| 2023-05-30 | 939-372-3XXX | 3000–3999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | AGUADILLA | PR |
| 2023-05-30 | 939-372-4XXX | 4000–4999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | AGUADILLA | PR |
| 2023-05-30 | 939-372-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | AGUADILLA | PR |
| 2023-05-30 | 939-372-6XXX | 6000–6999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | AGUADILLA | PR |
| 2023-05-30 | 939-372-7XXX | 7000–7999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | AGUADILLA | PR |
| 2023-05-30 | 939-372-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | AGUADILLA | PR |
| 2023-05-30 | 939-372-9XXX | 9000–9999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | AGUADILLA | PR |
| 2023-05-30 | 939-729-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARROYO | PR |
| 2023-05-30 | 939-729-6XXX | 6000–6999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARROYO | PR |
| 2023-05-30 | 939-729-7XXX | 7000–7999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARROYO | PR |
| 2023-05-30 | 939-729-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARROYO | PR |
| 2023-05-22 | 939-368-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2023-05-22 | 939-368-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2023-05-22 | 939-368-2XXX | 2000–2999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2023-05-22 | 939-368-3XXX | 3000–3999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2023-05-22 | 939-368-4XXX | 4000–4999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2023-05-22 | 939-368-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2023-05-22 | 939-368-6XXX | 6000–6999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2023-05-22 | 939-368-7XXX | 7000–7999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2023-05-22 | 939-368-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2023-05-22 | 939-368-9XXX | 9000–9999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2023-05-05 | 939-365-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | NARANJITO | PR |
| 2023-05-05 | 939-365-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | NARANJITO | PR |
| 2023-05-05 | 939-365-2XXX | 2000–2999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | NARANJITO | PR |
| 2023-05-05 | 939-365-3XXX | 3000–3999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | NARANJITO | PR |
| 2023-05-05 | 939-365-4XXX | 4000–4999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | NARANJITO | PR |
| 2023-05-05 | 939-365-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | NARANJITO | PR |
| 2023-05-05 | 939-365-6XXX | 6000–6999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | NARANJITO | PR |
| 2023-05-05 | 939-365-7XXX | 7000–7999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | NARANJITO | PR |
| 2023-05-05 | 939-365-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | NARANJITO | PR |
| 2023-05-05 | 939-365-9XXX | 9000–9999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | NARANJITO | PR |
| 2023-05-03 | 939-364-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | JUNCOS | PR |
| 2023-04-05 | 939-360-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | PUEBLOVIEJ | PR |
| 2023-04-05 | 939-361-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MAYAGUEZ | PR |
| 2023-04-05 | 939-361-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MAYAGUEZ | PR |
| 2023-04-05 | 939-361-2XXX | 2000–2999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MAYAGUEZ | PR |
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.