NumberResearch Membership · Data 09/23/2026

Recent thousands-block assignments

59 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/23/2026

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. 59
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
2008-04-02 623-302-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2008-04-02 636-696-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 OFALLON MO
2008-04-02 858-598-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SNDG LVTA CA
2008-04-01 314-686-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 KIRKWOOD MO
2008-04-01 714-579-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PLACENTIA CA
2008-03-31 262-865-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 RACINE WI
2008-03-31 262-865-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 RACINE WI
2008-03-31 309-948-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ROCKISLAND IL
2008-03-31 641-903-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MASON CITY IA
2008-03-28 253-353-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2008-03-28 253-353-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 TACOMA WA
2008-03-28 319-429-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 WATERLOO IA
2008-03-28 319-654-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CEDAR RPDS IA
2008-03-28 415-975-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SNFC CNTRL CA
2008-03-28 641-352-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MARSHALLTN IA
2008-03-28 720-985-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2008-03-28 720-987-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2008-03-27 219-487-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 GARY IN
2008-03-25 773-789-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2008-03-25 773-789-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2008-03-25 773-789-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2008-03-25 773-789-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2008-03-25 909-235-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ONTARIO CA
2008-03-25 916-751-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 RSVL MAIN CA
2008-03-24 219-246-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 VALPARAISO IN
2008-03-21 708-953-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 HARVEY IL
2008-03-21 708-953-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 HARVEY IL
2008-03-21 708-953-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 HARVEY IL
2008-03-21 708-953-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HARVEY IL
2008-03-21 801-448-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2008-03-19 253-326-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2008-03-19 253-326-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2008-03-19 254-350-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 KILLEEN TX
2008-03-19 619-609-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LA MESA CA
2008-03-18 331-465-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 W CHICAGO IL
2008-03-18 440-453-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ELYRIA OH
2008-03-18 630-398-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BARTLETT IL
2008-03-18 630-999-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SUGARGROVE IL
2008-03-18 630-999-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SUGARGROVE IL
2008-03-18 815-981-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 DE KALB IL
2008-03-14 208-906-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BOISE ID
2008-03-14 208-906-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BOISE ID
2008-03-13 503-560-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MCMINNVL OR
2008-03-13 510-434-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 OKLD FRTVL CA
2008-03-13 520-423-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CASAGRANDE AZ
2008-03-13 573-200-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CAPEGIRARD MO
2008-03-13 630-570-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 HINSDALE IL
2008-03-13 818-433-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2008-03-12 254-669-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 KILLEEN TX
2008-03-12 469-237-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 FRISCO TX

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/23/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.