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
2020-09-29 814-488-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 FRANKLIN PA
2020-09-29 814-488-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 FRANKLIN PA
2020-09-29 814-488-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 FRANKLIN PA
2020-09-29 909-852-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ETIWANDA CA
2020-09-29 909-871-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MARSHALL CA
2020-09-29 909-871-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MARSHALL CA
2020-09-29 909-892-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 UPLAND CA
2020-09-29 909-892-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 UPLAND CA
2020-09-29 951-557-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TEMSCL CNY CA
2020-09-28 208-603-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SANDPOINT ID
2020-09-28 224-689-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ELGIN IL
2020-09-28 224-689-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ELGIN IL
2020-09-28 224-689-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ELGIN IL
2020-09-28 224-689-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ELGIN IL
2020-09-28 262-233-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 DELAVAN WI
2020-09-28 262-427-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 DELAVAN WI
2020-09-28 330-601-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 WOOSTER OH
2020-09-28 330-845-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 WOOSTER OH
2020-09-28 330-845-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 WOOSTER OH
2020-09-28 636-348-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ST PETERS MO
2020-09-28 636-348-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ST PETERS MO
2020-09-28 636-626-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ST PETERS MO
2020-09-28 636-626-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ST PETERS MO
2020-09-28 636-697-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ST PETERS MO
2020-09-28 920-930-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GREEN BAY WI
2020-09-28 920-930-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GREEN BAY WI
2020-09-28 920-932-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 GREEN BAY WI
2020-09-28 920-932-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 GREEN BAY WI
2020-09-28 986-600-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MOSCOW ID
2020-09-24 208-298-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LEWISTON ID
2020-09-24 360-774-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PTTOWNSEND WA
2020-09-24 425-900-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2020-09-24 425-900-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2020-09-24 425-900-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2020-09-24 442-322-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BRAWLEY CA
2020-09-24 442-322-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BRAWLEY CA
2020-09-24 442-322-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BRAWLEY CA
2020-09-24 442-322-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BRAWLEY CA
2020-09-24 509-508-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SPOKANE WA
2020-09-24 509-508-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SPOKANE WA
2020-09-24 520-476-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 TUCSON AZ
2020-09-24 520-476-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 TUCSON AZ
2020-09-24 520-476-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 TUCSON AZ
2020-09-24 520-476-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 TUCSON AZ
2020-09-24 520-476-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TUCSON AZ
2020-09-24 520-839-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 NOGALES AZ
2020-09-24 562-525-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 DOWNEY CA
2020-09-24 562-525-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 DOWNEY CA
2020-09-24 619-603-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 NATIONALCY CA
2020-09-24 619-603-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 NATIONALCY 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.