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
2020-01-08 510-994-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 RICHMOND CA
2020-01-08 510-994-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 RICHMOND CA
2020-01-08 805-940-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 OXNARD CA
2020-01-08 858-642-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LA JOLLA CA
2020-01-08 858-737-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SNDG LVTA CA
2020-01-08 909-712-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 REDLANDS CA
2020-01-08 909-739-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 UPLAND CA
2020-01-08 915-979-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2020-01-08 915-979-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2020-01-08 915-979-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2020-01-08 949-615-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 TRABUCO CA
2020-01-07 208-207-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BOISE ID
2020-01-07 208-207-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BOISE ID
2020-01-07 208-506-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BOISE ID
2020-01-07 208-506-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BOISE ID
2020-01-07 209-308-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 MERCED CA
2020-01-07 234-235-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CORTLAND OH
2020-01-07 234-235-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CORTLAND OH
2020-01-07 385-326-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 OGDEN UT
2020-01-07 385-326-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 OGDEN UT
2020-01-07 385-349-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2020-01-07 385-349-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2020-01-07 406-304-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 MISSOULA MT
2020-01-07 406-402-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 GREATFALLS MT
2020-01-07 573-507-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 COLUMBIA MO
2020-01-07 573-507-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 COLUMBIA MO
2020-01-07 920-930-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 GREEN BAY WI
2020-01-07 920-930-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 GREEN BAY WI
2020-01-07 928-352-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 KINGMAN AZ
2020-01-07 937-556-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 WILMINGTON OH
2020-01-07 937-556-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 WILMINGTON OH
2020-01-06 224-342-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2020-01-06 224-435-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 GLENVIEW IL
2020-01-06 224-607-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2020-01-06 224-607-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2020-01-06 224-607-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2020-01-06 224-666-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2020-01-06 224-666-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2020-01-06 224-666-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2020-01-06 224-666-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2020-01-06 224-666-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2020-01-06 224-666-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2020-01-06 224-666-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2020-01-06 224-766-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 GLENVIEW IL
2020-01-06 619-856-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 NATIONALCY CA
2020-01-06 630-366-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 HINSDALE IL
2020-01-06 630-819-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 HINSDALE IL
2020-01-06 630-819-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 HINSDALE IL
2020-01-06 707-699-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 NAPA CA
2020-01-06 719-467-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PUEBLO CO

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.