NumberResearchRecent thousands-block assignments
0 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, all time — NPA 787
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2004-11-23 | 787-779-9XXX | 9000–9999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | BAYAMONNOR | PR |
| 2004-10-15 | 787-955-6XXX | 6000–6999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | CAGUAS | PR |
| 2004-10-15 | 787-955-7XXX | 7000–7999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | CAGUAS | PR |
| 2004-10-15 | 787-955-8XXX | 8000–8999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | CAGUAS | PR |
| 2004-10-15 | 787-955-9XXX | 9000–9999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | CAGUAS | PR |
| 2004-10-13 | 787-227-8XXX | 8000–8999 | Assigned | PUERTO RICO TELEPHONE COMPANY, INC. | 667C | NARANJITO | PR |
| 2004-10-13 | 787-355-8XXX | 8000–8999 | Assigned | PUERTO RICO TELEPHONE COMPANY, INC. | 667C | LUQUILLO | PR |
| 2004-10-13 | 787-459-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | BAYAMONNOR | PR |
| 2004-10-13 | 787-459-9XXX | 9000–9999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | BAYAMONNOR | PR |
| 2004-10-13 | 787-546-6XXX | 6000–6999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | AGUADILLA | PR |
| 2004-10-13 | 787-546-7XXX | 7000–7999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | AGUADILLA | PR |
| 2004-10-13 | 787-566-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2004-10-13 | 787-566-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ARECIBO | PR |
| 2004-10-13 | 787-609-8XXX | 8000–8999 | Assigned | PUERTO RICO TELEPHONE COMPANY, INC. | 667C | ISABELA | PR |
| 2004-10-13 | 787-712-7XXX | 7000–7999 | Assigned | PUERTO RICO TELEPHONE COMPANY, INC. | 667C | GURABO | PR |
| 2004-10-13 | 787-794-8XXX | 8000–8999 | Assigned | PUERTO RICO TELEPHONE COMPANY, INC. | 667C | TOA BAJA | PR |
| 2004-10-13 | 787-806-7XXX | 7000–7999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MAYAGUEZ | PR |
| 2004-10-13 | 787-808-7XXX | 7000–7999 | Assigned | PUERTO RICO TELEPHONE COMPANY, INC. | 667C | LAJAS | PR |
| 2004-10-13 | 787-814-9XXX | 9000–9999 | Assigned | PUERTO RICO TELEPHONE COMPANY, INC. | 667C | UTUADO | PR |
| 2004-10-13 | 787-915-8XXX | 8000–8999 | Assigned | PUERTO RICO TELEPHONE COMPANY, INC. | 667C | VEGA ALTA | PR |
| 2004-10-13 | 787-992-8XXX | 8000–8999 | Assigned | PUERTO RICO TELEPHONE COMPANY, INC. | 667C | YAUCO | PR |
| 2004-10-08 | 787-264-8XXX | 8000–8999 | Assigned | PUERTO RICO TEL. CO. | 3201 | SAN GERMAN | PR |
| 2004-10-05 | 787-673-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | SAN GERMAN | PR |
| 2004-10-05 | 787-673-1XXX | 1000–1999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | SAN GERMAN | PR |
| 2004-09-09 | 787-200-1XXX | 1000–1999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 8305 | RIOPIEDRAS | PR |
| 2004-09-09 | 787-200-2XXX | 2000–2999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 8305 | RIOPIEDRAS | PR |
| 2004-09-09 | 787-300-2XXX | 2000–2999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 8305 | SANTURCE | PR |
| 2004-09-07 | 787-222-7XXX | 7000–7999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | BAYAMONNOR | PR |
| 2004-09-07 | 787-222-9XXX | 9000–9999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | BAYAMONNOR | PR |
| 2004-09-07 | 787-223-3XXX | 3000–3999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR |
| 2004-09-07 | 787-223-4XXX | 4000–4999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR |
| 2004-09-07 | 787-223-5XXX | 5000–5999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | GUAYNABO | PR |
| 2004-09-07 | 787-224-3XXX | 3000–3999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | LEVITTOWN | PR |
| 2004-09-07 | 787-224-4XXX | 4000–4999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | LEVITTOWN | PR |
| 2004-09-07 | 787-224-5XXX | 5000–5999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | LEVITTOWN | PR |
| 2004-08-30 | 787-556-0XXX | 0000–0999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | FAJARDO | PR |
| 2004-08-18 | 787-806-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | MAYAGUEZ | PR |
| 2004-08-18 | 787-955-0XXX | 0000–0999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | CAGUAS | PR |
| 2004-08-18 | 787-955-1XXX | 1000–1999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | CAGUAS | PR |
| 2004-08-18 | 787-955-2XXX | 2000–2999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | CAGUAS | PR |
| 2004-08-18 | 787-955-3XXX | 3000–3999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | CAGUAS | PR |
| 2004-08-18 | 787-955-4XXX | 4000–4999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | CAGUAS | PR |
| 2004-08-18 | 787-955-5XXX | 5000–5999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | CAGUAS | PR |
| 2004-08-06 | 787-222-6XXX | 6000–6999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | BAYAMONNOR | PR |
| 2004-08-06 | 787-463-2XXX | 2000–2999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | CAROLINA | PR |
| 2004-08-06 | 787-463-3XXX | 3000–3999 | Assigned | LIBERTY MOBILE PUERTO RICO INC. | 639J | CAROLINA | PR |
| 2004-08-03 | 787-463-7XXX | 7000–7999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAROLINA | PR |
| 2004-08-03 | 787-463-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAROLINA | PR |
| 2004-08-03 | 787-463-9XXX | 9000–9999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | CAROLINA | PR |
| 2004-07-27 | 787-929-0XXX | 0000–0999 | 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.