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
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2010-09-24 | 939-273-7XXX | 7000–7999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2010-09-24 | 939-273-8XXX | 8000–8999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2010-09-24 | 939-273-9XXX | 9000–9999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2010-09-10 | 939-202-3XXX | 3000–3999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | LEVITTOWN | PR |
| 2010-09-10 | 939-202-4XXX | 4000–4999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | LEVITTOWN | PR |
| 2010-09-10 | 939-202-5XXX | 5000–5999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | LEVITTOWN | PR |
| 2010-09-10 | 939-202-6XXX | 6000–6999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | LEVITTOWN | PR |
| 2010-08-23 | 939-216-5XXX | 5000–5999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | CAROLINA | PR |
| 2010-08-23 | 939-216-6XXX | 6000–6999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | CAROLINA | PR |
| 2010-08-23 | 939-216-7XXX | 7000–7999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | CAROLINA | PR |
| 2010-08-23 | 939-216-8XXX | 8000–8999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | CAROLINA | PR |
| 2010-06-07 | 939-202-0XXX | 0000–0999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | LEVITTOWN | PR |
| 2010-06-07 | 939-202-1XXX | 1000–1999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | LEVITTOWN | PR |
| 2010-06-07 | 939-437-0XXX | 0000–0999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | TRUJILLOAL | PR |
| 2010-05-25 | 939-339-3XXX | 3000–3999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | AGUADILLA | PR |
| 2010-05-25 | 939-732-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARROYO | PR |
| 2010-05-25 | 939-865-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MAYAGUEZ | PR |
| 2010-02-03 | 939-332-8XXX | 8000–8999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | CAGUAS | PR |
| 2010-02-03 | 939-332-9XXX | 9000–9999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | CAGUAS | PR |
| 2010-01-19 | 939-232-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | BAYAMONNOR | PR |
| 2010-01-07 | 939-228-9XXX | 9000–9999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | SAN GERMAN | PR |
| 2009-12-17 | 939-388-0XXX | 0000–0999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR |
| 2009-12-17 | 939-388-1XXX | 1000–1999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR |
| 2009-12-17 | 939-388-2XXX | 2000–2999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR |
| 2009-12-17 | 939-388-3XXX | 3000–3999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR |
| 2009-12-17 | 939-388-4XXX | 4000–4999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR |
| 2009-12-17 | 939-388-5XXX | 5000–5999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR |
| 2009-12-17 | 939-388-6XXX | 6000–6999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR |
| 2009-12-17 | 939-388-7XXX | 7000–7999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR |
| 2009-12-17 | 939-388-8XXX | 8000–8999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR |
| 2009-12-17 | 939-388-9XXX | 9000–9999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR |
| 2009-12-16 | 939-216-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAROLINA | PR |
| 2009-12-16 | 939-216-9XXX | 9000–9999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAROLINA | PR |
| 2009-12-16 | 939-308-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2009-12-16 | 939-308-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2009-12-16 | 939-308-9XXX | 9000–9999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2009-12-11 | 939-260-0XXX | 0000–0999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-260-1XXX | 1000–1999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-260-2XXX | 2000–2999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-260-3XXX | 3000–3999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-260-4XXX | 4000–4999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-260-5XXX | 5000–5999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-260-6XXX | 6000–6999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-260-7XXX | 7000–7999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-260-8XXX | 8000–8999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-260-9XXX | 9000–9999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-261-0XXX | 0000–0999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-261-1XXX | 1000–1999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-261-2XXX | 2000–2999 | Assigned | PUERTO RICO TELCO DBA CLARO PUERTO RICO | 4823 | BAYAMONNOR | PR |
| 2009-12-11 | 939-261-3XXX | 3000–3999 | 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.