NumberResearch Membership · Data 2026-04

Recent thousands-block assignments

76 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 2026-04

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. 76
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
AssignedBlockAssigneeOCNRate centerState
2023-10-25 945-297-5XXX T-MOBILE USA, INC. 6529 FRISCO TX
2023-10-25 945-297-6XXX T-MOBILE USA, INC. 6529 FRISCO TX
2023-10-25 945-297-7XXX T-MOBILE USA, INC. 6529 FRISCO TX
2023-10-25 945-297-9XXX T-MOBILE USA, INC. 6529 FRISCO TX
2023-10-25 945-308-0XXX T-MOBILE USA, INC. 6529 FRISCO TX
2023-10-25 945-308-1XXX T-MOBILE USA, INC. 6529 FRISCO TX
2023-10-25 945-308-2XXX T-MOBILE USA, INC. 6529 FRISCO TX
2023-10-25 945-308-3XXX T-MOBILE USA, INC. 6529 FRISCO TX
2023-10-25 945-308-4XXX T-MOBILE USA, INC. 6529 FRISCO TX
2023-10-25 945-308-5XXX T-MOBILE USA, INC. 6529 FRISCO TX
2023-10-25 945-308-6XXX T-MOBILE USA, INC. 6529 FRISCO TX
2023-10-25 945-308-7XXX T-MOBILE USA, INC. 6529 FRISCO TX
2023-10-25 945-308-8XXX T-MOBILE USA, INC. 6529 FRISCO TX
2023-10-25 945-308-9XXX T-MOBILE USA, INC. 6529 FRISCO TX
2023-10-23 425-473-6XXX T-MOBILE USA, INC. 6529 RENTON WA
2023-10-23 425-547-2XXX T-MOBILE USA, INC. 6529 RENTON WA
2023-10-18 279-245-9XXX T-MOBILE USA, INC. 6529 FOLSOM CA
2023-10-18 279-297-1XXX T-MOBILE USA, INC. 6529 ELK GROVE CA
2023-10-18 279-297-2XXX T-MOBILE USA, INC. 6529 ELK GROVE CA
2023-10-18 279-297-3XXX T-MOBILE USA, INC. 6529 ELK GROVE CA
2023-10-18 279-790-6XXX T-MOBILE USA, INC. 6529 FAIR OAKS CA
2023-10-18 279-790-7XXX T-MOBILE USA, INC. 6529 FAIR OAKS CA
2023-10-18 369-213-8XXX T-MOBILE USA, INC. 6529 HEALDSBURG CA
2023-10-18 369-213-9XXX T-MOBILE USA, INC. 6529 HEALDSBURG CA
2023-10-18 840-239-6XXX T-MOBILE USA, INC. 6529 FONTANA CA
2023-10-18 840-239-7XXX T-MOBILE USA, INC. 6529 FONTANA CA
2023-10-18 840-239-8XXX T-MOBILE USA, INC. 6529 FONTANA CA
2023-10-18 840-239-9XXX T-MOBILE USA, INC. 6529 FONTANA CA
2023-10-18 840-245-9XXX T-MOBILE USA, INC. 6529 REDLANDS CA
2023-10-18 840-284-0XXX T-MOBILE USA, INC. 6529 CHINO CA
2023-10-18 840-284-1XXX T-MOBILE USA, INC. 6529 CHINO CA
2023-10-18 909-220-7XXX T-MOBILE USA, INC. 6529 REDLANDS CA
2023-10-17 254-538-0XXX T-MOBILE USA, INC. 6529 MARLIN TX
2023-10-17 254-538-1XXX T-MOBILE USA, INC. 6529 MARLIN TX
2023-10-17 254-538-2XXX T-MOBILE USA, INC. 6529 MARLIN TX
2023-10-17 254-538-9XXX T-MOBILE USA, INC. 6529 MARLIN TX
2023-10-17 564-239-2XXX T-MOBILE USA, INC. 6529 LONGVIEW WA
2023-10-17 564-239-3XXX T-MOBILE USA, INC. 6529 LONGVIEW WA
2023-10-16 442-429-9XXX T-MOBILE USA, INC. 6529 YUCCA VLY CA
2023-10-16 442-430-9XXX T-MOBILE USA, INC. 6529 VISTA CA
2023-10-16 840-244-8XXX T-MOBILE USA, INC. 6529 DIAMONDBAR CA
2023-10-16 840-244-9XXX T-MOBILE USA, INC. 6529 DIAMONDBAR CA
2023-10-13 279-226-5XXX T-MOBILE USA, INC. 6529 RSVL MAIN CA
2023-10-13 279-226-6XXX T-MOBILE USA, INC. 6529 RSVL MAIN CA
2023-10-13 279-241-1XXX T-MOBILE USA, INC. 6529 SCRM MAIN CA
2023-10-13 279-241-2XXX T-MOBILE USA, INC. 6529 SCRM MAIN CA
2023-10-13 279-241-3XXX T-MOBILE USA, INC. 6529 SCRM MAIN CA
2023-10-13 279-241-4XXX T-MOBILE USA, INC. 6529 SCRM MAIN CA
2023-10-13 279-243-0XXX T-MOBILE USA, INC. 6529 RSVL MAIN CA
2023-10-13 442-404-7XXX T-MOBILE USA, INC. 6529 VISTA CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 2026-04 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.