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
2021-09-13 939-625-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 BAYAMONNOR PR
2021-09-13 939-625-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 BAYAMONNOR PR
2021-09-13 939-745-6XXX 6000–6999Assigned SUNCOM DBA T-MOBILE USA 8645 BAYAMONNOR PR
2021-09-13 939-745-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 BAYAMONNOR PR
2021-09-13 939-745-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 BAYAMONNOR PR
2021-09-10 939-316-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 CAYEY PR
2021-09-10 939-316-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 CAYEY PR
2021-09-10 939-316-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 CAYEY PR
2021-09-10 939-320-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2021-09-09 939-318-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2021-09-09 939-318-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2021-09-09 939-318-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2021-09-09 939-318-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2021-09-09 939-318-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2021-09-09 939-318-6XXX 6000–6999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2021-09-09 939-318-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2021-09-09 939-318-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2021-09-09 939-318-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2021-09-09 939-478-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 CAYEY PR
2021-09-09 939-478-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 CAYEY PR
2021-09-09 939-478-6XXX 6000–6999Assigned SUNCOM DBA T-MOBILE USA 8645 CAYEY PR
2021-09-09 939-478-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 CAYEY PR
2021-09-09 939-478-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 CAYEY PR
2021-09-09 939-585-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 ARECIBO PR
2021-09-09 939-585-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 ARECIBO PR
2021-09-09 939-585-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 ARECIBO PR
2021-09-09 939-585-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 ARECIBO PR
2021-09-09 939-585-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 ARECIBO PR
2021-09-09 939-585-6XXX 6000–6999Assigned SUNCOM DBA T-MOBILE USA 8645 ARECIBO PR
2021-09-09 939-585-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 ARECIBO PR
2021-09-09 939-585-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 ARECIBO PR
2021-09-09 939-649-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 ARECIBO PR
2021-09-09 939-649-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 ARECIBO PR
2021-08-31 939-233-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 FAJARDO PR
2021-08-31 939-233-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 FAJARDO PR
2021-08-31 939-233-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 FAJARDO PR
2021-08-11 939-355-6XXX 6000–6999Assigned NEUTRAL TANDEM - PR 559F BAYAMONNOR PR
2021-08-11 939-355-7XXX 7000–7999Assigned NEUTRAL TANDEM - PR 559F BAYAMONNOR PR
2021-08-11 939-745-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 BAYAMONNOR PR
2021-08-11 939-745-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 BAYAMONNOR PR
2021-08-11 939-745-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 BAYAMONNOR PR
2021-08-11 939-745-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 BAYAMONNOR PR
2021-08-11 939-745-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 BAYAMONNOR PR
2021-08-11 939-745-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 BAYAMONNOR PR
2021-08-06 939-220-7XXX 7000–7999Assigned NEUTRAL TANDEM - PR 559F HUMACAO PR
2021-08-06 939-220-8XXX 8000–8999Assigned NEUTRAL TANDEM - PR 559F HUMACAO PR
2021-07-27 939-739-8XXX 8000–8999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J TOA ALTA PR
2021-07-06 939-214-3XXX 3000–3999Assigned NEUTRAL TANDEM - PR 559F LAJAS PR
2021-07-06 939-214-4XXX 4000–4999Assigned NEUTRAL TANDEM - PR 559F LAJAS PR
2021-07-06 939-229-3XXX 3000–3999Assigned NEUTRAL TANDEM - PR 559F SANTURCEES 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.