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
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Apr 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2015-11-10 | 939-881-6XXX | 6000–6999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | TRUJILLOAL | PR |
| 2015-11-10 | 939-881-7XXX | 7000–7999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | TRUJILLOAL | PR |
| 2015-11-10 | 939-881-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | TRUJILLOAL | PR |
| 2015-11-03 | 939-333-2XXX | 2000–2999 | Assigned | LIBERTY COMMUNICATIONS OF PUERTO RICO LLC | 955G | PUEBLOVIEJ | PR |
| 2015-11-03 | 939-333-3XXX | 3000–3999 | Assigned | LIBERTY COMMUNICATIONS OF PUERTO RICO LLC | 955G | PUEBLOVIEJ | PR |
| 2015-11-02 | 939-439-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | SANTURCE | PR |
| 2015-11-02 | 939-599-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | SANTURCE | PR |
| 2015-11-02 | 939-599-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | SANTURCE | PR |
| 2015-11-02 | 939-599-2XXX | 2000–2999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | SANTURCE | PR |
| 2015-11-02 | 939-599-3XXX | 3000–3999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | SANTURCE | PR |
| 2015-11-02 | 939-599-4XXX | 4000–4999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | SANTURCE | PR |
| 2015-11-02 | 939-599-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | SANTURCE | PR |
| 2015-11-02 | 939-599-6XXX | 6000–6999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | SANTURCE | PR |
| 2015-10-19 | 939-238-4XXX | 4000–4999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | BAYAMONSUR | PR |
| 2015-10-19 | 939-238-5XXX | 5000–5999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | BAYAMONSUR | PR |
| 2015-10-19 | 939-238-6XXX | 6000–6999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | BAYAMONSUR | PR |
| 2015-10-19 | 939-238-7XXX | 7000–7999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | BAYAMONSUR | PR |
| 2015-10-19 | 939-488-4XXX | 4000–4999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | BAYAMONNOR | PR |
| 2015-10-19 | 939-488-5XXX | 5000–5999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | BAYAMONNOR | PR |
| 2015-09-28 | 939-233-9XXX | 9000–9999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | FAJARDO | PR |
| 2015-09-28 | 939-529-3XXX | 3000–3999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | FAJARDO | PR |
| 2015-09-23 | 939-865-3XXX | 3000–3999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MAYAGUEZ | PR |
| 2015-09-23 | 939-865-4XXX | 4000–4999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MAYAGUEZ | PR |
| 2015-08-28 | 939-226-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | SANTURCE | PR |
| 2015-08-28 | 939-226-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | SANTURCE | PR |
| 2015-08-17 | 939-881-2XXX | 2000–2999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | TRUJILLOAL | PR |
| 2015-08-17 | 939-881-3XXX | 3000–3999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | TRUJILLOAL | PR |
| 2015-08-17 | 939-881-4XXX | 4000–4999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | TRUJILLOAL | PR |
| 2015-08-17 | 939-881-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | TRUJILLOAL | PR |
| 2015-08-03 | 939-655-7XXX | 7000–7999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | CAROLINA | PR |
| 2015-08-03 | 939-655-8XXX | 8000–8999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | CAROLINA | PR |
| 2015-08-03 | 939-655-9XXX | 9000–9999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | CAROLINA | PR |
| 2015-07-08 | 939-238-0XXX | 0000–0999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | BAYAMONSUR | PR |
| 2015-07-08 | 939-238-1XXX | 1000–1999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | BAYAMONSUR | PR |
| 2015-07-08 | 939-238-2XXX | 2000–2999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | BAYAMONSUR | PR |
| 2015-07-08 | 939-238-3XXX | 3000–3999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | BAYAMONSUR | PR |
| 2015-07-06 | 939-488-6XXX | 6000–6999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | BAYAMONNOR | PR |
| 2015-07-06 | 939-488-7XXX | 7000–7999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | BAYAMONNOR | PR |
| 2015-07-06 | 939-488-8XXX | 8000–8999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | BAYAMONNOR | PR |
| 2015-06-30 | 939-788-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2015-06-30 | 939-788-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2015-06-30 | 939-788-9XXX | 9000–9999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2015-06-26 | 939-633-9XXX | 9000–9999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAROLINA | PR |
| 2015-06-23 | 939-209-2XXX | 2000–2999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2015-06-23 | 939-209-3XXX | 3000–3999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2015-06-23 | 939-209-4XXX | 4000–4999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2015-06-23 | 939-865-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | MAYAGUEZ | PR |
| 2015-06-19 | 939-223-3XXX | 3000–3999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAROLINA | PR |
| 2015-06-19 | 939-223-4XXX | 4000–4999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAROLINA | PR |
| 2015-06-19 | 939-223-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAROLINA | 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.