NumberResearch Membership · Data 09/24/2026

Recent thousands-block assignments

70 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. 70
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
2020-09-04 254-408-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 COPPERASCV TX
2020-09-04 254-408-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 COPPERASCV TX
2020-09-04 573-302-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LKOZKOSBCH MO
2020-09-04 573-530-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 COLUMBIA MO
2020-09-04 573-530-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 COLUMBIA MO
2020-09-04 573-530-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 COLUMBIA MO
2020-09-04 636-299-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHESTERFLD MO
2020-09-04 636-318-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 TROY MO
2020-09-04 636-318-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 TROY MO
2020-09-04 636-732-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 GRAYSUMMIT MO
2020-09-04 636-732-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 GRAYSUMMIT MO
2020-09-04 636-777-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHESTERFLD MO
2020-09-04 636-777-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHESTERFLD MO
2020-09-04 636-777-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHESTERFLD MO
2020-09-04 636-777-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHESTERFLD MO
2020-09-03 213-526-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MONTEBELLO CA
2020-09-03 213-526-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MONTEBELLO CA
2020-09-03 213-526-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MONTEBELLO CA
2020-09-03 213-526-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MONTEBELLO CA
2020-09-03 360-616-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2020-09-03 360-616-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2020-09-03 505-376-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ESPANOLA NM
2020-09-03 505-376-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ESPANOLA NM
2020-09-03 505-932-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 FARMINGTON NM
2020-09-03 505-932-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 FARMINGTON NM
2020-09-03 916-530-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2020-09-03 916-530-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2020-09-02 254-278-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 COPPERASCV TX
2020-09-02 385-358-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2020-09-02 650-531-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PALO ALTO CA
2020-09-02 669-302-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CAMPBELL CA
2020-09-02 669-302-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CAMPBELL CA
2020-09-02 669-302-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CAMPBELL CA
2020-09-02 820-465-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 OXNARD CA
2020-09-02 820-465-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 OXNARD CA
2020-09-02 830-272-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SEGUIN TX
2020-09-02 909-935-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ONTARIO CA
2020-09-02 909-935-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ONTARIO CA
2020-09-02 971-977-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 TILLAMOOK OR
2020-09-02 971-977-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 TILLAMOOK OR
2020-09-02 971-977-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 TILLAMOOK OR
2020-09-01 208-948-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 TWIN FALLS ID
2020-09-01 408-752-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SUNNYVALE CA
2020-09-01 510-588-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 OKLD MN-PD CA
2020-09-01 510-588-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 OKLD MN-PD CA
2020-09-01 510-588-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 OKLD MN-PD CA
2020-09-01 530-608-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 TRUCKEE CA
2020-09-01 562-514-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 LONG BEACH CA
2020-09-01 562-514-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LONG BEACH CA
2020-09-01 562-514-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LONG BEACH CA

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.