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
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2016-07-27 | 939-383-4XXX | 4000–4999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | BAYAMONNOR | PR |
| 2016-07-27 | 939-383-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | BAYAMONNOR | PR |
| 2016-07-26 | 939-319-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | AGUADILLA | PR |
| 2016-07-26 | 939-319-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | AGUADILLA | PR |
| 2016-07-25 | 939-545-0XXX | 0000–0999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 8305 | TOA ALTA | PR |
| 2016-07-25 | 939-545-1XXX | 1000–1999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 8305 | TOA ALTA | PR |
| 2016-07-25 | 939-545-2XXX | 2000–2999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 8305 | TOA ALTA | PR |
| 2016-07-25 | 939-545-3XXX | 3000–3999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 8305 | TOA ALTA | PR |
| 2016-07-25 | 939-545-4XXX | 4000–4999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 8305 | TOA ALTA | PR |
| 2016-07-25 | 939-545-6XXX | 6000–6999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 8305 | TOA ALTA | PR |
| 2016-07-25 | 939-545-7XXX | 7000–7999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 8305 | TOA ALTA | PR |
| 2016-07-05 | 939-299-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MAYAGUEZ | PR |
| 2016-06-20 | 939-224-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | AGUADILLA | PR |
| 2016-06-20 | 939-224-2XXX | 2000–2999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | AGUADILLA | PR |
| 2016-06-20 | 939-240-7XXX | 7000–7999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MANATI | PR |
| 2016-06-20 | 939-240-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MANATI | PR |
| 2016-06-20 | 939-459-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MANATI | PR |
| 2016-05-19 | 939-213-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAYEY | PR |
| 2016-05-19 | 939-213-9XXX | 9000–9999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAYEY | PR |
| 2016-05-09 | 939-235-0XXX | 0000–0999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | BAYAMONSUR | PR |
| 2016-05-09 | 939-235-1XXX | 1000–1999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | BAYAMONSUR | PR |
| 2016-05-09 | 939-235-2XXX | 2000–2999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | BAYAMONSUR | PR |
| 2016-05-09 | 939-235-3XXX | 3000–3999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | BAYAMONSUR | PR |
| 2016-05-09 | 939-235-4XXX | 4000–4999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | BAYAMONSUR | PR |
| 2016-05-09 | 939-235-5XXX | 5000–5999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | BAYAMONSUR | PR |
| 2016-04-28 | 939-299-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MAYAGUEZ | PR |
| 2016-04-28 | 939-299-9XXX | 9000–9999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MAYAGUEZ | PR |
| 2016-04-28 | 939-422-9XXX | 9000–9999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2016-04-28 | 939-525-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | SAN GERMAN | PR |
| 2016-04-28 | 939-525-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | SAN GERMAN | PR |
| 2016-04-28 | 939-525-2XXX | 2000–2999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | SAN GERMAN | PR |
| 2016-04-28 | 939-525-9XXX | 9000–9999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | SAN GERMAN | PR |
| 2016-04-20 | 939-222-3XXX | 3000–3999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2016-04-20 | 939-222-4XXX | 4000–4999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2016-04-20 | 939-222-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2016-04-20 | 939-222-6XXX | 6000–6999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2016-04-20 | 939-222-7XXX | 7000–7999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2016-04-20 | 939-222-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2016-04-20 | 939-240-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MANATI | PR |
| 2016-04-20 | 939-240-6XXX | 6000–6999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MANATI | PR |
| 2016-04-20 | 939-865-7XXX | 7000–7999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MAYAGUEZ | PR |
| 2016-04-14 | 939-383-2XXX | 2000–2999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | BAYAMONNOR | PR |
| 2016-04-14 | 939-383-3XXX | 3000–3999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | BAYAMONNOR | PR |
| 2016-03-24 | 939-222-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2016-03-24 | 939-222-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2016-03-24 | 939-222-2XXX | 2000–2999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2016-03-24 | 939-222-9XXX | 9000–9999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2016-03-17 | 939-209-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2016-03-17 | 939-209-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2016-03-17 | 939-209-9XXX | 9000–9999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | 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.