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
2019-09-27 510-216-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 OKLD FRTVL CA
2019-09-27 916-450-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2019-09-27 949-617-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 IRVINE CA
2019-09-27 949-617-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 IRVINE CA
2019-09-27 949-617-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 IRVINE CA
2019-09-26 206-537-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2019-09-26 206-537-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2019-09-26 206-537-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2019-09-26 209-219-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ATWATER CA
2019-09-26 213-371-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LSAN DA 03 CA
2019-09-26 213-371-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LSAN DA 03 CA
2019-09-26 213-855-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LSAN DA 10 CA
2019-09-26 213-855-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LSAN DA 10 CA
2019-09-26 213-855-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LSAN DA 10 CA
2019-09-26 213-855-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LSAN DA 10 CA
2019-09-26 323-393-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2019-09-26 323-400-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 MONTEBELLO CA
2019-09-26 323-492-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2019-09-26 323-685-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 LSAN DA 05 CA
2019-09-26 323-760-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 LSAN DA 14 CA
2019-09-26 323-760-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 LSAN DA 14 CA
2019-09-26 323-760-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LSAN DA 14 CA
2019-09-26 323-770-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2019-09-26 323-772-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2019-09-26 424-758-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CMTN CMTN CA
2019-09-26 425-414-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ISSAQUAH WA
2019-09-26 425-535-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2019-09-26 442-218-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LKISABELLA CA
2019-09-26 562-486-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LONG BEACH CA
2019-09-26 619-860-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SNDG SNDG CA
2019-09-26 628-758-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SNFC MT-EV CA
2019-09-26 661-416-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ARVIN CA
2019-09-26 661-888-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SNCA NHCS CA
2019-09-26 669-290-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SUNNYVALE CA
2019-09-26 669-290-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SUNNYVALE CA
2019-09-26 707-485-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 UKIAH CA
2019-09-26 858-388-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 EL CAJON CA
2019-09-26 909-712-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 REDLANDS CA
2019-09-26 915-224-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2019-09-26 915-224-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2019-09-26 915-224-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2019-09-26 915-224-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2019-09-26 915-224-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2019-09-26 915-224-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2019-09-26 916-270-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 WALNUT GRV CA
2019-09-26 916-270-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 WALNUT GRV CA
2019-09-26 916-526-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 FAIR OAKS CA
2019-09-26 925-574-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 DUBLN-SNRM CA
2019-09-26 949-674-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 NEWPORTBCH CA
2019-09-25 208-948-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 TWIN FALLS ID

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.