NumberResearch Membership · Data 09/24/2026

Recent thousands-block assignments

69 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/24/2026

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
2020-03-30 213-420-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MONTEBELLO CA
2020-03-30 707-727-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 UKIAH CA
2020-03-27 501-381-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BENTON AR
2020-03-27 501-381-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BENTON AR
2020-03-27 720-694-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2020-03-26 325-283-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ABILENE TX
2020-03-26 360-206-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CENTRALIA WA
2020-03-25 213-397-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2020-03-25 213-397-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2020-03-25 213-397-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2020-03-25 213-397-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2020-03-25 213-397-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2020-03-25 213-464-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 LSAN DA 12 CA
2020-03-25 213-464-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LSAN DA 12 CA
2020-03-25 213-464-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LSAN DA 12 CA
2020-03-25 213-464-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LSAN DA 12 CA
2020-03-25 213-468-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 LSAN DA 13 CA
2020-03-25 213-468-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LSAN DA 13 CA
2020-03-25 213-468-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LSAN DA 13 CA
2020-03-25 213-469-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LSAN DA 04 CA
2020-03-24 385-341-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2020-03-23 360-506-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CENTRALIA WA
2020-03-23 425-521-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2020-03-23 425-535-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2020-03-23 509-873-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 KENNEWICK WA
2020-03-23 619-650-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHULAVISTA CA
2020-03-23 707-740-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 EUREKA CA
2020-03-20 217-850-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2020-03-20 808-300-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 HILO HI
2020-03-20 808-437-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 HILO HI
2020-03-20 808-758-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 WAILUKU HI
2020-03-18 253-316-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TACOMAWVLY WA
2020-03-18 619-617-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHULAVISTA CA
2020-03-18 619-617-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHULAVISTA CA
2020-03-18 619-617-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHULAVISTA CA
2020-03-18 737-267-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2020-03-18 737-267-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2020-03-18 737-267-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2020-03-16 425-439-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BOTHELL WA
2020-03-16 425-496-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 RENTON WA
2020-03-16 509-418-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SPOKANE WA
2020-03-16 760-454-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ENCINITAS CA
2020-03-16 760-454-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ENCINITAS CA
2020-03-16 805-259-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SANBARBARA CA
2020-03-16 916-398-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 WALNUT GRV CA
2020-03-16 916-398-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 WALNUT GRV CA
2020-03-13 681-385-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHRLSTNZN1 WV
2020-03-13 681-385-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHRLSTNZN1 WV
2020-03-13 681-385-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHRLSTNZN1 WV
2020-03-13 681-385-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHRLSTNZN1 WV

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.