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
2008-07-11 787-480-9XXX 9000–9999Assigned PUERTO RICO TELEPHONE COMPANY, INC. 667C BAYAMONNOR PR
2008-07-11 787-992-3XXX 3000–3999Assigned PUERTO RICO TELEPHONE COMPANY, INC. 667C YAUCO PR
2008-06-24 787-679-0XXX 0000–0999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J PUEBLOVIEJ PR
2008-05-28 787-673-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 SAN GERMAN PR
2008-05-13 787-483-9XXX 9000–9999Assigned PUERTO RICO TELEPHONE COMPANY, INC. 667C NARANJITO PR
2008-05-08 787-680-9XXX 9000–9999Assigned PUERTO RICO TELEPHONE COMPANY, INC. 667C ARECIBO PR
2008-05-08 787-921-9XXX 9000–9999Assigned PUERTO RICO TELEPHONE COMPANY, INC. 667C MANATI PR
2008-05-05 787-592-9XXX 9000–9999Assigned PUERTO RICO TELEPHONE COMPANY, INC. 667C GUAYAMA PR
2008-05-05 787-966-8XXX 8000–8999Assigned PUERTO RICO TELEPHONE COMPANY, INC. 667C BAYAMONNOR PR
2008-05-05 787-995-9XXX 9000–9999Assigned PUERTO RICO TELEPHONE COMPANY, INC. 667C BAYAMONNOR PR
2008-05-01 787-900-8XXX 8000–8999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J CAGUAS PR
2008-05-01 787-900-9XXX 9000–9999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J CAGUAS PR
2008-04-04 787-932-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 AGUADILLA PR
2008-03-25 787-694-9XXX 9000–9999Assigned PUERTO RICO TELEPHONE COMPANY, INC. 667C CAYEY PR
2008-03-25 787-986-9XXX 9000–9999Assigned PUERTO RICO TELEPHONE COMPANY, INC. 667C MAYAGUEZ PR
2008-03-25 787-987-9XXX 9000–9999Assigned PUERTO RICO TELEPHONE COMPANY, INC. 667C PONCE PR
2008-03-18 787-710-1XXX 1000–1999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J CAROLINA PR
2008-03-18 787-908-2XXX 2000–2999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONSUR PR
2008-03-17 787-230-4XXX 4000–4999Assigned PUERTO RICO TELEPHONE COMPANY, INC. 667C TOA BAJA PR
2008-03-17 787-230-5XXX 5000–5999Assigned PUERTO RICO TELEPHONE COMPANY, INC. 667C TOA BAJA PR
2008-03-12 787-965-7XXX 7000–7999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 VEGA BAJA PR
2008-03-11 787-500-9XXX 9000–9999Assigned PUERTO RICO TELEPHONE COMPANY, INC. 667C RIO GRANDE PR
2008-03-10 787-476-7XXX 7000–7999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 SAN GERMAN PR
2008-03-10 787-500-7XXX 7000–7999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 RIO GRANDE PR
2008-03-10 787-973-7XXX 7000–7999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 GUAYANILLA PR
2008-02-25 787-718-4XXX 4000–4999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J CAGUAS PR
2008-02-25 787-718-5XXX 5000–5999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J CAGUAS PR
2008-02-25 787-718-6XXX 6000–6999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J CAGUAS PR
2008-02-25 787-718-7XXX 7000–7999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J CAGUAS PR
2008-02-25 787-718-8XXX 8000–8999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J CAGUAS PR
2008-02-07 787-931-9XXX 9000–9999Assigned PUERTO RICO TELEPHONE COMPANY, INC. 667C AGUADILLA PR
2008-01-28 787-341-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 ARROYO PR
2008-01-28 787-629-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 AGUADILLA PR
2008-01-17 787-673-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 SAN GERMAN PR
2008-01-17 787-673-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 SAN GERMAN PR
2008-01-02 787-678-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 CAYEY PR
2007-12-21 787-689-4XXX 4000–4999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J LEVITTOWN PR
2007-12-21 787-689-5XXX 5000–5999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J LEVITTOWN PR
2007-12-21 787-689-6XXX 6000–6999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J LEVITTOWN PR
2007-12-21 787-689-7XXX 7000–7999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J LEVITTOWN PR
2007-11-27 787-708-6XXX 6000–6999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 GUAYNABO PR
2007-11-21 787-629-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 AGUADILLA PR
2007-11-21 787-988-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 FAJARDO PR
2007-10-16 787-946-0XXX 0000–0999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G SANTURCE PR
2007-10-16 787-946-1XXX 1000–1999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G SANTURCE PR
2007-10-16 787-946-3XXX 3000–3999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G SANTURCE PR
2007-10-16 787-946-4XXX 4000–4999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G SANTURCE PR
2007-10-16 787-946-5XXX 5000–5999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G SANTURCE PR
2007-10-16 787-946-7XXX 7000–7999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G SANTURCE PR
2007-10-16 787-946-8XXX 8000–8999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G SANTURCE 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.