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 |
|---|---|---|---|---|---|---|---|
| 2009-12-11 | 939-261-4XXX | 4000–4999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-261-5XXX | 5000–5999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-261-6XXX | 6000–6999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-261-7XXX | 7000–7999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-261-8XXX | 8000–8999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-261-9XXX | 9000–9999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-262-0XXX | 0000–0999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-262-1XXX | 1000–1999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-262-2XXX | 2000–2999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-262-3XXX | 3000–3999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-262-4XXX | 4000–4999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-262-5XXX | 5000–5999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-262-6XXX | 6000–6999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-262-7XXX | 7000–7999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-262-8XXX | 8000–8999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-262-9XXX | 9000–9999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-263-0XXX | 0000–0999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-263-1XXX | 1000–1999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-263-2XXX | 2000–2999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-263-3XXX | 3000–3999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-263-4XXX | 4000–4999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-263-5XXX | 5000–5999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-263-6XXX | 6000–6999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-263-7XXX | 7000–7999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-263-8XXX | 8000–8999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-263-9XXX | 9000–9999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-01 | 939-339-2XXX | 2000–2999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | AGUADILLA | PR |
| 2009-11-11 | 939-217-7XXX | 7000–7999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2009-11-11 | 939-217-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | PONCE | PR |
| 2009-11-11 | 939-232-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | BAYAMONNOR | PR |
| 2009-09-22 | 939-339-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | AGUADILLA | PR |
| 2009-09-14 | 939-732-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARROYO | PR |
| 2009-08-28 | 939-240-3XXX | 3000–3999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MANATI | PR |
| 2009-08-19 | 939-202-7XXX | 7000–7999 | Assigned | WORLDNET TELECOMMUNICATIONS, INC. - PR | 9726 | LEVITTOWN | PR |
| 2009-08-19 | 939-225-7XXX | 7000–7999 | Assigned | WORLDNET TELECOMMUNICATIONS, INC. - PR | 9726 | BAYAMONSUR | PR |
| 2009-07-27 | 939-865-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MAYAGUEZ | PR |
| 2009-07-20 | 939-325-3XXX | 3000–3999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAYEY | PR |
| 2009-07-20 | 939-325-4XXX | 4000–4999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAYEY | PR |
| 2009-05-29 | 939-256-0XXX | 0000–0999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-05-29 | 939-256-1XXX | 1000–1999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-05-29 | 939-256-2XXX | 2000–2999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-05-29 | 939-256-3XXX | 3000–3999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-05-29 | 939-256-4XXX | 4000–4999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-05-29 | 939-256-5XXX | 5000–5999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-05-29 | 939-256-6XXX | 6000–6999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-05-29 | 939-256-7XXX | 7000–7999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-05-29 | 939-256-8XXX | 8000–8999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-05-29 | 939-256-9XXX | 9000–9999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-05-29 | 939-257-0XXX | 0000–0999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-05-29 | 939-257-1XXX | 1000–1999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | 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.