NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

59 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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. 59
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
2007-04-23 636-614-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 OFALLON MO
2007-04-23 818-428-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 NORTHRIDGE CA
2007-04-20 219-488-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CROWNPOINT IN
2007-04-20 224-723-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2007-04-20 224-723-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2007-04-20 224-723-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2007-04-20 304-894-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BECKLEY WV
2007-04-20 304-894-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BECKLEY WV
2007-04-20 330-766-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 WARREN OH
2007-04-20 440-390-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 NOROYALTON OH
2007-04-20 682-367-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ARLINGTON TX
2007-04-20 682-367-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ARLINGTON TX
2007-04-20 720-496-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2007-04-20 720-496-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2007-04-20 720-496-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2007-04-20 720-496-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2007-04-20 720-496-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2007-04-20 720-496-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2007-04-20 806-518-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PLAINVIEW TX
2007-04-20 970-589-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 GRAND JCT CO
2007-04-20 970-589-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 GRAND JCT CO
2007-04-19 216-773-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 TERRACE OH
2007-04-19 216-825-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 TERRACE OH
2007-04-19 323-518-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LSAN DA 05 CA
2007-04-19 323-518-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LSAN DA 05 CA
2007-04-19 323-518-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LSAN DA 05 CA
2007-04-19 505-609-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 FARMINGTON NM
2007-04-19 505-609-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 FARMINGTON NM
2007-04-19 520-732-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SIERRAVIST AZ
2007-04-19 626-759-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ALHAMBRA CA
2007-04-19 626-759-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ALHAMBRA CA
2007-04-19 714-204-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ANAHEIM CA
2007-04-19 714-204-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ANAHEIM CA
2007-04-19 714-204-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ANAHEIM CA
2007-04-19 773-801-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHICGOZN06 IL
2007-04-18 210-548-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2007-04-18 210-548-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2007-04-18 210-548-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2007-04-18 210-548-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2007-04-18 210-548-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2007-04-18 210-548-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SANANTONIO TX
2007-04-18 312-714-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2007-04-18 312-714-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2007-04-18 323-545-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LSAN DA 12 CA
2007-04-18 360-487-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 VANCOUVER WA
2007-04-18 469-321-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2007-04-18 469-321-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2007-04-18 469-321-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2007-04-18 469-321-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2007-04-18 469-321-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.