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
2005-02-14 787-560-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 AGUADILLA PR
2005-02-14 787-566-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 ARECIBO PR
2005-02-14 787-566-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 ARECIBO PR
2005-02-14 787-566-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 ARECIBO PR
2005-02-14 787-566-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 ARECIBO PR
2005-02-14 787-595-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 CAYEY PR
2005-02-14 787-595-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 CAYEY PR
2005-02-14 787-595-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 CAYEY PR
2005-02-14 787-601-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 PONCE PR
2005-02-14 787-601-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 PONCE PR
2005-02-14 787-601-6XXX 6000–6999Assigned SUNCOM DBA T-MOBILE USA 8645 PONCE PR
2005-02-14 787-601-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 PONCE PR
2005-02-08 787-359-6XXX 6000–6999Assigned SUNCOM DBA T-MOBILE USA 8645 NARANJITO PR
2005-02-08 787-359-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 NARANJITO PR
2005-02-08 787-556-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 FAJARDO PR
2005-02-08 787-556-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 FAJARDO PR
2005-02-08 787-929-6XXX 6000–6999Assigned SUNCOM DBA T-MOBILE USA 8645 ARROYO PR
2005-01-11 787-662-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2005-01-11 787-662-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2005-01-11 787-662-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2005-01-11 787-662-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2005-01-11 787-662-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2005-01-11 787-662-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2005-01-11 787-662-6XXX 6000–6999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2005-01-11 787-662-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2005-01-11 787-662-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2005-01-11 787-662-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2004-12-10 787-560-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 AGUADILLA PR
2004-12-10 787-560-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 AGUADILLA PR
2004-12-09 787-463-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 CAROLINA PR
2004-12-09 787-463-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 CAROLINA PR
2004-12-09 787-463-6XXX 6000–6999Assigned SUNCOM DBA T-MOBILE USA 8645 CAROLINA PR
2004-12-06 787-560-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 AGUADILLA PR
2004-12-06 787-619-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 BAYAMONNOR PR
2004-12-03 787-674-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2004-12-03 787-674-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2004-12-01 787-221-4XXX 4000–4999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J PUEBLOVIEJ PR
2004-12-01 787-221-5XXX 5000–5999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J PUEBLOVIEJ PR
2004-12-01 787-675-3XXX 3000–3999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONSUR PR
2004-12-01 787-675-4XXX 4000–4999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONSUR PR
2004-11-30 787-524-0XXX 0000–0999Assigned PUERTO RICO TELEPHONE COMPANY, INC. 667C BAYAMONNOR PR
2004-11-30 787-524-1XXX 1000–1999Assigned PUERTO RICO TELEPHONE COMPANY, INC. 667C BAYAMONNOR PR
2004-11-30 787-524-2XXX 2000–2999Assigned PUERTO RICO TELEPHONE COMPANY, INC. 667C BAYAMONNOR PR
2004-11-30 787-524-3XXX 3000–3999Assigned PUERTO RICO TELEPHONE COMPANY, INC. 667C BAYAMONNOR PR
2004-11-30 787-524-4XXX 4000–4999Assigned PUERTO RICO TELEPHONE COMPANY, INC. 667C BAYAMONNOR PR
2004-11-30 787-524-5XXX 5000–5999Assigned PUERTO RICO TELEPHONE COMPANY, INC. 667C BAYAMONNOR PR
2004-11-30 787-524-6XXX 6000–6999Assigned PUERTO RICO TELEPHONE COMPANY, INC. 667C BAYAMONNOR PR
2004-11-30 787-524-7XXX 7000–7999Assigned PUERTO RICO TELEPHONE COMPANY, INC. 667C BAYAMONNOR PR
2004-11-30 787-524-8XXX 8000–8999Assigned PUERTO RICO TELEPHONE COMPANY, INC. 667C BAYAMONNOR PR
2004-11-30 787-524-9XXX 9000–9999Assigned PUERTO RICO TELEPHONE COMPANY, INC. 667C 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.