NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

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
SUNCOM DBA T-MOBILE USA 655
LIBERTY MOBILE PUERTO RICO INC. 329
LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 165
WORLDNET TELECOMMUNICATIONS, INC. - PR 106
NEUTRAL TANDEM - PR 63
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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2007-10-16 787-946-9XXX 9000–9999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G SANTURCE PR
2007-10-16 787-963-0XXX 0000–0999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G SANTURCE PR
2007-10-16 787-963-1XXX 1000–1999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G SANTURCE PR
2007-10-04 787-341-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 ARROYO PR
2007-09-18 787-902-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2007-09-18 787-902-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2007-09-18 787-902-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2007-09-18 787-902-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2007-09-18 787-902-6XXX 6000–6999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2007-09-06 787-913-7XXX 7000–7999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 JUANA DIAZ PR
2007-09-05 787-437-7XXX 7000–7999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 JAYUYA PR
2007-09-05 787-482-7XXX 7000–7999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 SALINAS PR
2007-09-05 787-483-7XXX 7000–7999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 NARANJITO PR
2007-09-05 787-558-7XXX 7000–7999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 SAN ISABEL PR
2007-09-05 787-663-7XXX 7000–7999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 CIALES PR
2007-09-05 787-956-7XXX 7000–7999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 LARES PR
2007-08-22 787-481-0XXX 0000–0999Assigned PUERTO RICO TELCO DBA CLARO PUERTO RICO 4823 BAYAMONNOR PR
2007-08-22 787-481-1XXX 1000–1999Assigned PUERTO RICO TELCO DBA CLARO PUERTO RICO 4823 BAYAMONNOR PR
2007-08-22 787-481-2XXX 2000–2999Assigned PUERTO RICO TELCO DBA CLARO PUERTO RICO 4823 BAYAMONNOR PR
2007-08-22 787-481-3XXX 3000–3999Assigned PUERTO RICO TELCO DBA CLARO PUERTO RICO 4823 BAYAMONNOR PR
2007-08-22 787-481-4XXX 4000–4999Assigned PUERTO RICO TELCO DBA CLARO PUERTO RICO 4823 BAYAMONNOR PR
2007-08-22 787-481-5XXX 5000–5999Assigned PUERTO RICO TELCO DBA CLARO PUERTO RICO 4823 BAYAMONNOR PR
2007-08-22 787-481-6XXX 6000–6999Assigned PUERTO RICO TELCO DBA CLARO PUERTO RICO 4823 BAYAMONNOR PR
2007-08-22 787-481-7XXX 7000–7999Assigned PUERTO RICO TELCO DBA CLARO PUERTO RICO 4823 BAYAMONNOR PR
2007-08-22 787-481-8XXX 8000–8999Assigned PUERTO RICO TELCO DBA CLARO PUERTO RICO 4823 BAYAMONNOR PR
2007-08-22 787-481-9XXX 9000–9999Assigned PUERTO RICO TELCO DBA CLARO PUERTO RICO 4823 BAYAMONNOR PR
2007-08-02 787-951-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 MAYAGUEZ PR
2007-07-25 787-951-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 MAYAGUEZ PR
2007-07-24 787-394-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2007-07-17 787-987-2XXX 2000–2999Assigned NEUTRAL TANDEM - PR 559F PONCE PR
2007-06-27 787-904-4XXX 4000–4999Assigned METROPCS, INC. 5562 MANATI PR
2007-06-20 787-710-2XXX 2000–2999Assigned NEUTRAL TANDEM - PR 559F CAROLINA PR
2007-06-15 787-931-2XXX 2000–2999Assigned NEUTRAL TANDEM - PR 559F AGUADILLA PR
2007-06-07 787-901-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 PONCE PR
2007-06-07 787-986-5XXX 5000–5999Assigned NEUTRAL TANDEM - PR 559F MAYAGUEZ PR
2007-05-30 787-229-6XXX 6000–6999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 ANASCO PR
2007-05-30 787-254-8XXX 8000–8999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 CABO ROJO PR
2007-05-30 787-291-8XXX 8000–8999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 QUEBRADLLS PR
2007-05-30 787-534-4XXX 4000–4999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 ROOSEVLTRD PR
2007-05-30 787-551-8XXX 8000–8999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 MOCA PR
2007-05-30 787-569-4XXX 4000–4999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 GUANICA PR
2007-05-30 787-589-8XXX 8000–8999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 AGUADA PR
2007-05-30 787-609-3XXX 3000–3999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 ISABELA PR
2007-05-30 787-741-6XXX 6000–6999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 VIEQUES PR
2007-05-30 787-742-6XXX 6000–6999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 CULEBRA PR
2007-05-30 787-803-7XXX 7000–7999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 COAMO PR
2007-05-30 787-804-6XXX 6000–6999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 SABANAGRND PR
2007-05-30 787-808-8XXX 8000–8999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 LAJAS PR
2007-05-30 787-827-7XXX 7000–7999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 LAS MARIAS PR
2007-05-30 787-838-7XXX 7000–7999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 MARICAO 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.