NumberResearch Membership · Data 09/25/2026

Recent thousands-block assignments

69 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/25/2026

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
T-MOBILE USA, INC. 69
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
2010-12-29 216-338-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2010-12-29 216-659-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2010-12-23 312-547-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2010-12-23 312-554-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2010-12-23 312-568-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2010-12-23 312-568-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2010-12-23 312-582-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2010-12-23 312-589-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2010-12-23 312-609-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2010-12-23 312-669-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2010-12-23 312-692-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2010-12-23 312-768-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2010-12-23 312-841-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2010-12-23 312-931-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2010-12-23 312-931-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2010-12-23 312-983-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2010-12-23 312-983-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2010-12-22 801-888-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2010-12-22 801-888-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2010-12-22 801-888-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2010-12-22 805-628-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 VNTRA CNTL CA
2010-12-22 805-628-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 VNTRA CNTL CA
2010-12-22 925-953-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 WALNUT CRK CA
2010-12-20 626-560-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ALHAMBRA CA
2010-12-20 626-560-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ALHAMBRA CA
2010-12-20 626-560-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ALHAMBRA CA
2010-12-20 626-560-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ALHAMBRA CA
2010-12-20 626-560-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ALHAMBRA CA
2010-12-20 801-473-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2010-12-20 928-366-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 YUMA AZ
2010-12-20 928-366-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 YUMA AZ
2010-12-20 928-366-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 YUMA AZ
2010-12-16 513-400-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2010-12-16 513-400-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2010-12-16 513-400-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2010-12-16 513-400-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2010-12-16 530-718-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 AUBN MAIN CA
2010-12-16 773-554-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2010-12-16 773-554-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2010-12-16 773-554-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2010-12-16 773-815-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2010-12-16 773-815-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2010-12-16 773-815-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2010-12-15 325-436-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SNYDER TX
2010-12-14 702-981-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 LAS VEGAS NV
2010-12-14 702-981-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LAS VEGAS NV
2010-12-13 304-250-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BECKLEY WV
2010-12-13 304-250-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BECKLEY WV
2010-12-13 304-763-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BECKLEY WV
2010-12-13 304-910-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BLUEFIELD WV

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.