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
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Jan 2026
Dec 2025
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2021-12-10 | 939-343-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | NARANJITO | PR |
| 2021-12-10 | 939-343-9XXX | 9000–9999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | NARANJITO | PR |
| 2021-12-10 | 939-608-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | SAN GERMAN | PR |
| 2021-12-10 | 939-608-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | SAN GERMAN | PR |
| 2021-12-10 | 939-608-2XXX | 2000–2999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | SAN GERMAN | PR |
| 2021-12-10 | 939-608-3XXX | 3000–3999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | SAN GERMAN | PR |
| 2021-12-10 | 939-608-4XXX | 4000–4999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | SAN GERMAN | PR |
| 2021-12-10 | 939-608-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | SAN GERMAN | PR |
| 2021-12-10 | 939-608-6XXX | 6000–6999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | SAN GERMAN | PR |
| 2021-12-10 | 939-608-7XXX | 7000–7999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | SAN GERMAN | PR |
| 2021-12-10 | 939-608-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | SAN GERMAN | PR |
| 2021-12-10 | 939-608-9XXX | 9000–9999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | SAN GERMAN | PR |
| 2021-12-08 | 939-600-0XXX | 0000–0999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | PUEBLOVIEJ | PR |
| 2021-12-08 | 939-600-1XXX | 1000–1999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | PUEBLOVIEJ | PR |
| 2021-12-02 | 939-866-5XXX | 5000–5999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | TRUJILLOAL | PR |
| 2021-11-22 | 939-320-2XXX | 2000–2999 | Assigned | WORLDNET TELECOMMUNICATIONS, INC. - PR | 9726 | SANTURCE | PR |
| 2021-11-22 | 939-363-7XXX | 7000–7999 | Assigned | WORLDNET TELECOMMUNICATIONS, INC. - PR | 9726 | BAYAMONNOR | PR |
| 2021-11-18 | 939-326-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAROLINA | PR |
| 2021-11-18 | 939-326-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAROLINA | PR |
| 2021-11-18 | 939-326-2XXX | 2000–2999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAROLINA | PR |
| 2021-11-18 | 939-326-3XXX | 3000–3999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAROLINA | PR |
| 2021-11-18 | 939-326-4XXX | 4000–4999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAROLINA | PR |
| 2021-11-18 | 939-326-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAROLINA | PR |
| 2021-11-18 | 939-326-6XXX | 6000–6999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAROLINA | PR |
| 2021-11-18 | 939-326-7XXX | 7000–7999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAROLINA | PR |
| 2021-11-18 | 939-326-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAROLINA | PR |
| 2021-11-18 | 939-326-9XXX | 9000–9999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAROLINA | PR |
| 2021-11-17 | 939-408-4XXX | 4000–4999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAROLINA | PR |
| 2021-11-17 | 939-408-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAROLINA | PR |
| 2021-11-17 | 939-408-6XXX | 6000–6999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAROLINA | PR |
| 2021-11-17 | 939-408-7XXX | 7000–7999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAROLINA | PR |
| 2021-11-17 | 939-408-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAROLINA | PR |
| 2021-11-16 | 939-321-4XXX | 4000–4999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MANATI | PR |
| 2021-11-16 | 939-321-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MANATI | PR |
| 2021-11-16 | 939-321-6XXX | 6000–6999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MANATI | PR |
| 2021-11-16 | 939-321-7XXX | 7000–7999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MANATI | PR |
| 2021-11-16 | 939-321-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MANATI | PR |
| 2021-11-16 | 939-331-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MANATI | PR |
| 2021-11-16 | 939-331-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MANATI | PR |
| 2021-11-16 | 939-331-2XXX | 2000–2999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MANATI | PR |
| 2021-11-16 | 939-331-3XXX | 3000–3999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MANATI | PR |
| 2021-11-16 | 939-331-4XXX | 4000–4999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MANATI | PR |
| 2021-11-16 | 939-331-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MANATI | PR |
| 2021-11-16 | 939-331-6XXX | 6000–6999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MANATI | PR |
| 2021-11-16 | 939-331-7XXX | 7000–7999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MANATI | PR |
| 2021-11-16 | 939-331-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MANATI | PR |
| 2021-11-16 | 939-331-9XXX | 9000–9999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MANATI | PR |
| 2021-11-12 | 939-294-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARROYO | PR |
| 2021-11-12 | 939-294-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARROYO | PR |
| 2021-11-12 | 939-294-4XXX | 4000–4999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARROYO | 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.