NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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 939
LUMEN TECHNOLOGIES PUERTO RICO, LLC 66
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
2026-07-09 939-800-4XXX 4000–4999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J ADJUNTAS PR
2026-07-02 939-367-8XXX 8000–8999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J FAJARDO PR
2025-02-12 939-435-8XXX 8000–8999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J BARRANQUTS PR
2025-01-29 939-221-7XXX 7000–7999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J LUQUILLO PR
2025-01-29 939-345-8XXX 8000–8999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J MOROVIS PR
2025-01-29 939-544-6XXX 6000–6999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J CAMUY PR
2025-01-29 939-814-3XXX 3000–3999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J UTUADO PR
2024-07-10 939-427-4XXX 4000–4999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J SANTURCE PR
2024-05-07 939-535-3XXX 3000–3999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J SANTURCE PR
2024-03-13 939-226-2XXX 2000–2999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J SANTURCE PR
2023-12-28 939-739-6XXX 6000–6999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J TOA ALTA PR
2023-12-19 939-360-3XXX 3000–3999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J PUEBLOVIEJ PR
2023-11-21 939-320-0XXX 0000–0999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J SANTURCE PR
2023-07-26 939-320-1XXX 1000–1999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J SANTURCE PR
2023-05-31 939-320-3XXX 3000–3999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J SANTURCE PR
2023-02-15 939-320-5XXX 5000–5999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J SANTURCE PR
2022-09-28 939-320-4XXX 4000–4999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J SANTURCE PR
2022-06-22 939-739-2XXX 2000–2999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J TOA ALTA PR
2022-05-03 939-739-4XXX 4000–4999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J TOA ALTA PR
2021-07-27 939-739-8XXX 8000–8999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J TOA ALTA PR
2021-06-23 939-318-2XXX 2000–2999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J SANTURCE PR
2021-01-21 939-399-2XXX 2000–2999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J RIOPIEDRAS PR
2020-10-28 939-399-4XXX 4000–4999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J RIOPIEDRAS PR
2020-09-14 939-545-9XXX 9000–9999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J TOA ALTA PR
2020-08-03 939-687-3XXX 3000–3999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J GURABO PR
2020-08-03 939-687-4XXX 4000–4999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J GURABO PR
2020-07-29 939-293-8XXX 8000–8999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J SANTURCE PR
2020-02-13 939-200-2XXX 2000–2999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J AGUADILLA PR
2020-02-13 939-206-5XXX 5000–5999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J BAYAMONNOR PR
2020-02-13 939-210-5XXX 5000–5999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J CAGUAS PR
2020-02-13 939-212-4XXX 4000–4999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J OROCOVIS PR
2020-02-13 939-230-2XXX 2000–2999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J ANASCO PR
2020-02-13 939-234-3XXX 3000–3999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J CANOVANAS PR
2020-02-13 939-291-1XXX 1000–1999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J QUEBRADLLS PR
2020-02-13 939-293-2XXX 2000–2999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J SANTURCE PR
2020-02-13 939-294-2XXX 2000–2999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J ARROYO PR
2020-02-13 939-296-2XXX 2000–2999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J JUNCOS PR
2020-02-13 939-297-2XXX 2000–2999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J ARECIBO PR
2020-02-13 939-303-2XXX 2000–2999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J RIO GRANDE PR
2020-02-13 939-357-2XXX 2000–2999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J CABO ROJO PR
2020-02-13 939-393-2XXX 2000–2999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J BARCELONTA PR
2020-02-13 939-437-3XXX 3000–3999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J TRUJILLOAL PR
2020-02-13 939-440-8XXX 8000–8999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J FLORIDA PR
2020-02-13 939-444-0XXX 0000–0999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J ROOSEVLTRD PR
2020-02-13 939-445-7XXX 7000–7999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J GUANICA PR
2020-02-13 939-545-8XXX 8000–8999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J TOA ALTA PR
2020-02-13 939-592-5XXX 5000–5999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J BAYAMONSUR PR
2020-02-13 939-606-2XXX 2000–2999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J MAYAGUEZ PR
2020-02-13 939-609-2XXX 2000–2999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J ISABELA PR
2020-02-13 939-666-7XXX 7000–7999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J SANSBSTIAN PR

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.