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
2020-02-13 787-663-4XXX 4000–4999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J CIALES PR
2020-02-13 787-665-8XXX 8000–8999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J DORADO PR
2020-02-13 787-694-6XXX 6000–6999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J CAYEY PR
2020-02-13 787-742-8XXX 8000–8999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J CULEBRA PR
2020-02-13 787-803-9XXX 9000–9999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J COAMO PR
2020-02-13 787-827-6XXX 6000–6999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J LAS MARIAS PR
2020-02-13 787-913-2XXX 2000–2999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J JUANA DIAZ PR
2020-02-13 787-921-4XXX 4000–4999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J MANATI PR
2020-02-13 787-936-4XXX 4000–4999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J CATANO PR
2020-02-13 787-937-8XXX 8000–8999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J SANLORENZO PR
2020-02-13 787-945-3XXX 3000–3999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J SANTURCEES PR
2020-02-13 787-953-8XXX 8000–8999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J YABUCOA PR
2020-02-13 787-956-2XXX 2000–2999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J LARES PR
2020-02-13 787-965-5XXX 5000–5999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J VEGA BAJA PR
2020-02-13 787-968-3XXX 3000–3999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J VIEQUES PR
2020-02-13 787-985-2XXX 2000–2999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J ISLA VERDE PR
2020-02-13 787-991-4XXX 4000–4999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J AIBONITO PR
2019-12-17 787-985-3XXX 3000–3999Assigned NATURAL G.C. INC. - PR 985G ISLA VERDE PR
2019-12-17 787-985-4XXX 4000–4999Assigned NATURAL G.C. INC. - PR 985G ISLA VERDE PR
2019-07-01 787-985-6XXX 6000–6999Assigned NATURAL G.C. INC. - PR 985G ISLA VERDE PR
2019-03-28 787-921-1XXX 1000–1999Assigned NATURAL G.C. INC. - PR 985G MANATI PR
2019-03-28 787-991-6XXX 6000–6999Assigned NATURAL G.C. INC. - PR 985G AIBONITO PR
2019-03-20 787-838-8XXX 8000–8999Assigned NATURAL G.C. INC. - PR 985G MARICAO PR
2019-03-20 787-913-3XXX 3000–3999Assigned NATURAL G.C. INC. - PR 985G JUANA DIAZ PR
2019-03-20 787-936-6XXX 6000–6999Assigned NATURAL G.C. INC. - PR 985G CATANO PR
2019-03-06 787-425-0XXX 0000–0999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G GUAYNABO PR
2019-03-06 787-936-2XXX 2000–2999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G CATANO PR
2019-02-28 787-699-9XXX 9000–9999Assigned NATURAL G.C. INC. - PR 985G BARRANQUTS PR
2019-01-23 787-987-6XXX 6000–6999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J PONCE PR
2018-11-20 787-710-0XXX 0000–0999Assigned NATURAL G.C. INC. - PR 985G CAROLINA PR
2018-11-20 787-985-5XXX 5000–5999Assigned NATURAL G.C. INC. - PR 985G ISLA VERDE PR
2018-10-30 787-345-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 VEGA BAJA PR
2018-10-11 787-680-5XXX 5000–5999Assigned NATURAL G.C. INC. - PR 985G ARECIBO PR
2018-04-24 787-979-4XXX 4000–4999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J LEVITTOWN PR
2018-04-24 787-979-5XXX 5000–5999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J LEVITTOWN PR
2017-09-18 787-551-4XXX 4000–4999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G MOCA PR
2017-09-18 787-979-6XXX 6000–6999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G LEVITTOWN PR
2017-08-31 787-230-3XXX 3000–3999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G TOA BAJA PR
2017-08-10 787-428-3XXX 3000–3999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G GUAYNABO PR
2017-08-10 787-437-3XXX 3000–3999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G JAYUYA PR
2017-08-10 787-534-8XXX 8000–8999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G ROOSEVLTRD PR
2017-08-10 787-663-3XXX 3000–3999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G CIALES PR
2017-08-10 787-665-4XXX 4000–4999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G DORADO PR
2017-08-10 787-970-6XXX 6000–6999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G BARCELONTA PR
2017-04-18 787-978-3XXX 3000–3999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G SABANAGRND PR
2017-04-06 787-483-1XXX 1000–1999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G NARANJITO PR
2017-04-06 787-680-4XXX 4000–4999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G ARECIBO PR
2017-04-06 787-713-7XXX 7000–7999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G JUNCOS PR
2017-04-06 787-912-8XXX 8000–8999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G LASPIEDRAS PR
2017-04-06 787-953-4XXX 4000–4999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G YABUCOA 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.