NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

3 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, last 30 days — NPA 939
METROPCS, INC. 3
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
2020-08-25 939-206-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 BAYAMONNOR PR
2020-08-25 939-625-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 BAYAMONNOR PR
2020-08-25 939-625-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 BAYAMONNOR PR
2020-08-25 939-625-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 BAYAMONNOR PR
2020-08-25 939-625-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 BAYAMONNOR PR
2020-08-25 939-625-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 BAYAMONNOR PR
2020-08-25 939-625-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 BAYAMONNOR 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
2020-08-03 939-687-5XXX 5000–5999Assigned NEUTRAL TANDEM - PR 559F GURABO PR
2020-07-29 939-293-8XXX 8000–8999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J SANTURCE PR
2020-07-24 939-237-2XXX 2000–2999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONNOR PR
2020-07-24 939-237-3XXX 3000–3999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONNOR PR
2020-07-24 939-237-5XXX 5000–5999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONNOR PR
2020-07-24 939-237-6XXX 6000–6999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONNOR PR
2020-07-15 939-313-8XXX 8000–8999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONSUR PR
2020-07-15 939-313-9XXX 9000–9999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONSUR PR
2020-07-10 939-437-1XXX 1000–1999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J TRUJILLOAL PR
2020-07-10 939-437-5XXX 5000–5999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J TRUJILLOAL PR
2020-07-09 939-312-0XXX 0000–0999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONSUR PR
2020-07-09 939-312-1XXX 1000–1999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONSUR PR
2020-07-09 939-312-2XXX 2000–2999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONSUR PR
2020-07-09 939-312-3XXX 3000–3999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONSUR PR
2020-06-25 939-312-4XXX 4000–4999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONSUR PR
2020-06-25 939-312-5XXX 5000–5999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONSUR PR
2020-06-25 939-312-6XXX 6000–6999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONSUR PR
2020-06-25 939-312-7XXX 7000–7999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONSUR PR
2020-06-25 939-312-8XXX 8000–8999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONSUR PR
2020-05-27 939-312-9XXX 9000–9999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONSUR PR
2020-05-22 939-592-8XXX 8000–8999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONSUR PR
2020-05-22 939-592-9XXX 9000–9999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONSUR PR
2020-03-23 939-592-6XXX 6000–6999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONSUR PR
2020-03-23 939-592-7XXX 7000–7999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONSUR 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

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.