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
2014-09-02 939-336-2XXX 2000–2999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G CANOVANAS PR
2014-09-02 939-336-3XXX 3000–3999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G CANOVANAS PR
2014-09-02 939-336-4XXX 4000–4999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G CANOVANAS PR
2014-09-02 939-336-5XXX 5000–5999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G CANOVANAS PR
2014-09-02 939-336-6XXX 6000–6999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G CANOVANAS PR
2014-09-02 939-336-7XXX 7000–7999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G CANOVANAS PR
2014-09-02 939-336-8XXX 8000–8999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G CANOVANAS PR
2014-09-02 939-336-9XXX 9000–9999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G CANOVANAS PR
2014-09-02 939-337-0XXX 0000–0999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G CANOVANAS PR
2014-09-02 939-337-1XXX 1000–1999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G CANOVANAS PR
2014-09-02 939-337-2XXX 2000–2999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G CANOVANAS PR
2014-09-02 939-337-3XXX 3000–3999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G CANOVANAS PR
2014-09-02 939-337-4XXX 4000–4999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G CANOVANAS PR
2014-09-02 939-337-5XXX 5000–5999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G CANOVANAS PR
2014-09-02 939-337-6XXX 6000–6999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G CANOVANAS PR
2014-09-02 939-337-7XXX 7000–7999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G CANOVANAS PR
2014-09-02 939-337-8XXX 8000–8999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G CANOVANAS PR
2014-09-02 939-337-9XXX 9000–9999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G CANOVANAS PR
2014-08-07 939-500-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 PONCE PR
2014-08-07 939-500-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 PONCE PR
2014-08-04 939-239-6XXX 6000–6999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J CAGUAS PR
2014-08-04 939-239-7XXX 7000–7999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J CAGUAS PR
2014-08-04 939-239-8XXX 8000–8999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J CAGUAS PR
2014-08-04 939-239-9XXX 9000–9999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J CAGUAS PR
2014-07-22 939-224-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 AGUADILLA PR
2014-07-22 939-224-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 AGUADILLA PR
2014-07-22 939-335-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 ARROYO PR
2014-07-17 939-649-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 ARECIBO PR
2014-07-17 939-649-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 ARECIBO PR
2014-07-17 939-649-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 ARECIBO PR
2014-07-17 939-649-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 ARECIBO PR
2014-07-16 939-349-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 AGUADILLA PR
2014-07-16 939-349-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 AGUADILLA PR
2014-07-11 939-322-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2014-07-11 939-322-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2014-07-11 939-322-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2014-07-11 939-322-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2014-07-11 939-535-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2014-07-11 939-535-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2014-07-11 939-535-6XXX 6000–6999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2014-07-11 939-535-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2014-07-11 939-535-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2014-07-07 939-325-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 CAYEY PR
2014-07-07 939-325-6XXX 6000–6999Assigned SUNCOM DBA T-MOBILE USA 8645 CAYEY PR
2014-07-07 939-325-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 CAYEY PR
2014-07-07 939-325-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 CAYEY PR
2014-06-26 939-229-1XXX 1000–1999Assigned DATA@CCESS COMMUNICATION, INC. - PR 752E SANTURCEES PR
2014-06-24 939-535-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2014-06-24 939-535-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2014-06-24 939-535-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 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.