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 |
|---|---|---|---|---|---|---|---|
| 2014-06-23 | 939-252-3XXX | 3000–3999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | BAYAMONSUR | PR |
| 2014-06-23 | 939-252-4XXX | 4000–4999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | BAYAMONSUR | PR |
| 2014-06-23 | 939-252-5XXX | 5000–5999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | BAYAMONSUR | PR |
| 2014-03-25 | 939-252-1XXX | 1000–1999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | BAYAMONSUR | PR |
| 2014-03-25 | 939-252-2XXX | 2000–2999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | BAYAMONSUR | PR |
| 2014-03-03 | 939-219-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2014-03-03 | 939-219-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2014-03-03 | 939-219-2XXX | 2000–2999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2014-03-03 | 939-219-3XXX | 3000–3999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2014-03-03 | 939-219-4XXX | 4000–4999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2014-03-03 | 939-219-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2014-03-03 | 939-219-6XXX | 6000–6999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2014-03-03 | 939-219-7XXX | 7000–7999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2014-03-03 | 939-219-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2014-03-03 | 939-219-9XXX | 9000–9999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2014-03-03 | 939-429-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2014-03-03 | 939-429-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2014-03-03 | 939-429-2XXX | 2000–2999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2014-03-03 | 939-429-3XXX | 3000–3999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2014-03-03 | 939-429-4XXX | 4000–4999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2014-03-03 | 939-429-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2014-03-03 | 939-429-6XXX | 6000–6999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2014-03-03 | 939-429-7XXX | 7000–7999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2014-03-03 | 939-429-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2014-03-03 | 939-429-9XXX | 9000–9999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2014-03-03 | 939-488-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | BAYAMONNOR | PR |
| 2014-03-03 | 939-488-9XXX | 9000–9999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | BAYAMONNOR | PR |
| 2014-02-27 | 939-732-3XXX | 3000–3999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARROYO | PR |
| 2014-02-27 | 939-732-4XXX | 4000–4999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARROYO | PR |
| 2014-02-27 | 939-732-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARROYO | PR |
| 2014-02-27 | 939-732-6XXX | 6000–6999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARROYO | PR |
| 2014-02-24 | 939-228-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | SAN GERMAN | PR |
| 2014-02-24 | 939-228-2XXX | 2000–2999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | SAN GERMAN | PR |
| 2014-02-24 | 939-232-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | BAYAMONNOR | PR |
| 2014-02-24 | 939-232-6XXX | 6000–6999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | BAYAMONNOR | PR |
| 2014-02-24 | 939-240-2XXX | 2000–2999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MANATI | PR |
| 2014-02-24 | 939-417-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | BAYAMONNOR | PR |
| 2014-02-18 | 939-539-9XXX | 9000–9999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAROLINA | PR |
| 2014-01-31 | 939-208-0XXX | 0000–0999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | CAGUAS | PR |
| 2014-01-31 | 939-208-1XXX | 1000–1999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | CAGUAS | PR |
| 2014-01-31 | 939-208-2XXX | 2000–2999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | CAGUAS | PR |
| 2014-01-31 | 939-208-3XXX | 3000–3999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | CAGUAS | PR |
| 2013-12-18 | 939-349-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | AGUADILLA | PR |
| 2013-12-18 | 939-349-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | AGUADILLA | PR |
| 2013-12-18 | 939-349-2XXX | 2000–2999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | AGUADILLA | PR |
| 2013-12-18 | 939-349-3XXX | 3000–3999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | AGUADILLA | PR |
| 2013-12-18 | 939-349-4XXX | 4000–4999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | AGUADILLA | PR |
| 2013-12-18 | 939-349-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | AGUADILLA | PR |
| 2013-12-18 | 939-349-6XXX | 6000–6999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | AGUADILLA | PR |
| 2013-12-18 | 939-349-9XXX | 9000–9999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | AGUADILLA | 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.