NumberResearch Membership · Data 09/25/2026

Recent thousands-block assignments

68 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. 68
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
2019-05-02 650-439-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MT VIEW CA
2019-05-02 669-309-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SNJS SOUTH CA
2019-05-02 669-309-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SNJS SOUTH CA
2019-05-02 702-344-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MESQUITE NV
2019-05-02 702-344-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MESQUITE NV
2019-05-02 702-344-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MESQUITE NV
2019-05-02 702-344-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MESQUITE NV
2019-05-02 702-861-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LAUGHLIN NV
2019-05-02 702-861-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LAUGHLIN NV
2019-05-02 916-857-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2019-05-01 425-436-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2019-04-25 425-436-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2019-04-25 425-436-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2019-04-23 213-461-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2019-04-23 213-461-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2019-04-23 213-461-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2019-04-23 425-505-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2019-04-23 425-515-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2019-04-23 818-617-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SNFN SNFN CA
2019-04-23 818-617-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SNFN SNFN CA
2019-04-19 808-466-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HONOLULU HI
2019-04-18 206-825-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2019-04-18 206-825-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2019-04-18 206-825-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2019-04-18 206-825-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BAINBDG IS WA
2019-04-18 510-955-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 OKLD TRNID CA
2019-04-18 808-437-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HILO HI
2019-04-18 909-449-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 MARSHALL CA
2019-04-16 424-420-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 INGLEWOOD CA
2019-04-16 424-420-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 INGLEWOOD CA
2019-04-16 424-420-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 INGLEWOOD CA
2019-04-16 442-270-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 EL CENTRO CA
2019-04-16 442-270-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 EL CENTRO CA
2019-04-16 669-249-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SUNNYVALE CA
2019-04-16 909-288-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CLAREMONT CA
2019-04-16 909-761-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 S BERNDINO CA
2019-04-16 951-425-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 RIVERSIDE CA
2019-04-15 206-581-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2019-04-15 206-581-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2019-04-15 206-581-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2019-04-15 206-581-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2019-04-15 209-319-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TRACY CA
2019-04-15 360-410-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 WHATCOMCTY WA
2019-04-15 425-480-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 HALLS LAKE WA
2019-04-15 425-535-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2019-04-15 442-216-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 VISTA CA
2019-04-15 539-230-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SALLISAW OK
2019-04-15 539-230-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SALLISAW OK
2019-04-15 539-230-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SALLISAW OK
2019-04-15 539-230-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SALLISAW OK

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.