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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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 |
|---|---|---|---|---|---|---|---|
| 2022-01-21 | 939-384-4XXX | 4000–4999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2022-01-21 | 939-384-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2022-01-21 | 939-384-6XXX | 6000–6999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2022-01-21 | 939-384-7XXX | 7000–7999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2022-01-21 | 939-384-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2022-01-21 | 939-384-9XXX | 9000–9999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2022-01-21 | 939-391-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | FAJARDO | PR |
| 2022-01-21 | 939-391-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | FAJARDO | PR |
| 2022-01-21 | 939-391-2XXX | 2000–2999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | FAJARDO | PR |
| 2022-01-21 | 939-391-9XXX | 9000–9999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | FAJARDO | PR |
| 2022-01-19 | 939-891-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | FAJARDO | PR |
| 2022-01-19 | 939-891-6XXX | 6000–6999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | FAJARDO | PR |
| 2022-01-19 | 939-891-7XXX | 7000–7999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | FAJARDO | PR |
| 2022-01-19 | 939-891-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | FAJARDO | PR |
| 2022-01-18 | 939-328-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2022-01-18 | 939-328-2XXX | 2000–2999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2022-01-18 | 939-328-3XXX | 3000–3999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2022-01-18 | 939-328-4XXX | 4000–4999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2022-01-18 | 939-328-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2022-01-18 | 939-328-6XXX | 6000–6999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2022-01-18 | 939-328-7XXX | 7000–7999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2022-01-18 | 939-328-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2021-12-16 | 939-362-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAYEY | PR |
| 2021-12-16 | 939-362-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAYEY | PR |
| 2021-12-16 | 939-362-2XXX | 2000–2999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAYEY | PR |
| 2021-12-16 | 939-362-3XXX | 3000–3999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAYEY | PR |
| 2021-12-16 | 939-362-9XXX | 9000–9999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAYEY | PR |
| 2021-12-14 | 939-316-4XXX | 4000–4999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAYEY | PR |
| 2021-12-14 | 939-316-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAYEY | PR |
| 2021-12-14 | 939-316-6XXX | 6000–6999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAYEY | PR |
| 2021-12-14 | 939-316-7XXX | 7000–7999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAYEY | PR |
| 2021-12-14 | 939-316-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAYEY | PR |
| 2021-12-13 | 939-297-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2021-12-13 | 939-297-3XXX | 3000–3999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2021-12-13 | 939-297-4XXX | 4000–4999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2021-12-13 | 939-297-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2021-12-13 | 939-297-6XXX | 6000–6999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2021-12-13 | 939-297-7XXX | 7000–7999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2021-12-13 | 939-297-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2021-12-13 | 939-649-6XXX | 6000–6999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2021-12-13 | 939-649-7XXX | 7000–7999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2021-12-13 | 939-649-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2021-12-10 | 939-343-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | NARANJITO | PR |
| 2021-12-10 | 939-343-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | NARANJITO | PR |
| 2021-12-10 | 939-343-2XXX | 2000–2999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | NARANJITO | PR |
| 2021-12-10 | 939-343-3XXX | 3000–3999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | NARANJITO | PR |
| 2021-12-10 | 939-343-4XXX | 4000–4999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | NARANJITO | PR |
| 2021-12-10 | 939-343-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | NARANJITO | PR |
| 2021-12-10 | 939-343-6XXX | 6000–6999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | NARANJITO | PR |
| 2021-12-10 | 939-343-7XXX | 7000–7999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | NARANJITO | 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.