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
2004-01-09 708-856-2XXX T-MOBILE USA, INC. 6529 CHICAGOHTS IL
2004-01-09 773-355-8XXX T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2004-01-09 773-355-9XXX T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2004-01-09 806-283-0XXX T-MOBILE USA, INC. 6529 LUBBOCK TX
2004-01-09 806-283-1XXX T-MOBILE USA, INC. 6529 LUBBOCK TX
2004-01-09 815-608-1XXX T-MOBILE USA, INC. 6529 ROCKFORD IL
2004-01-08 323-244-3XXX T-MOBILE USA, INC. 6529 LSAN DA 03 CA
2004-01-08 323-244-5XXX T-MOBILE USA, INC. 6529 LSAN DA 03 CA
2004-01-08 760-687-6XXX T-MOBILE USA, INC. 6529 OCSD OCSD CA
2004-01-08 815-616-0XXX T-MOBILE USA, INC. 6529 FREEPORT IL
2004-01-08 818-256-6XXX T-MOBILE USA, INC. 6529 SNFN SNFN CA
2004-01-08 909-455-7XXX T-MOBILE USA, INC. 6529 POMONA CA
2004-01-08 909-528-5XXX T-MOBILE USA, INC. 6529 MENTONE CA
2004-01-08 940-399-7XXX T-MOBILE USA, INC. 6529 DECATUR TX
2004-01-07 435-850-2XXX T-MOBILE USA, INC. 6529 TOOELE UT
2004-01-07 530-415-8XXX T-MOBILE USA, INC. 6529 MARYSVILLE CA
2004-01-07 801-529-7XXX T-MOBILE USA, INC. 6529 KAYSVILLE UT
2004-01-06 307-256-8XXX T-MOBILE USA, INC. 6529 CHEYENNE WY
2004-01-06 307-256-9XXX T-MOBILE USA, INC. 6529 CHEYENNE WY
2004-01-06 314-255-4XXX T-MOBILE USA, INC. 6529 ST LOUIS MO
2004-01-06 314-255-5XXX T-MOBILE USA, INC. 6529 ST LOUIS MO
2004-01-06 314-255-6XXX T-MOBILE USA, INC. 6529 ST LOUIS MO
2004-01-06 314-255-7XXX T-MOBILE USA, INC. 6529 ST LOUIS MO
2004-01-06 314-255-8XXX T-MOBILE USA, INC. 6529 ST LOUIS MO
2004-01-06 608-216-1XXX T-MOBILE USA, INC. 6529 MADISON WI
2004-01-05 219-512-8XXX T-MOBILE USA, INC. 6529 GARY IN
2004-01-05 219-545-6XXX T-MOBILE USA, INC. 6529 GARY IN
2004-01-05 219-880-7XXX T-MOBILE USA, INC. 6529 GARY IN
2004-01-05 253-217-3XXX T-MOBILE USA, INC. 6529 AUBURN WA
2004-01-05 253-273-5XXX T-MOBILE USA, INC. 6529 TACOMA WA
2004-01-05 323-360-2XXX T-MOBILE USA, INC. 6529 LSAN DA 05 CA
2004-01-05 530-953-8XXX T-MOBILE USA, INC. 6529 REDDING CA
2004-01-05 619-245-5XXX T-MOBILE USA, INC. 6529 NATIONALCY CA
2004-01-05 619-397-8XXX T-MOBILE USA, INC. 6529 CHULAVISTA CA
2004-01-05 661-600-3XXX T-MOBILE USA, INC. 6529 SNCA NHCS CA
2004-01-05 818-451-5XXX T-MOBILE USA, INC. 6529 CANOGAPARK CA
2004-01-05 818-451-6XXX T-MOBILE USA, INC. 6529 CANOGAPARK CA
2004-01-05 909-539-7XXX T-MOBILE USA, INC. 6529 CHINO CA
2004-01-04 808-218-8XXX T-MOBILE USA, INC. 6529 HONOLULU HI
2004-01-02 708-546-1XXX T-MOBILE USA, INC. 6529 SUMMIT IL
2004-01-02 708-985-1XXX T-MOBILE USA, INC. 6529 HARVEY IL
2004-01-02 847-539-9XXX T-MOBILE USA, INC. 6529 DESPLAINES IL
2004-01-02 847-789-6XXX T-MOBILE USA, INC. 6529 DESPLAINES IL
2004-01-02 847-954-9XXX T-MOBILE USA, INC. 6529 DESPLAINES IL
2003-12-31 808-630-3XXX T-MOBILE USA, INC. 6529 HONOLULU HI
2003-12-31 808-630-4XXX T-MOBILE USA, INC. 6529 HONOLULU HI
2003-12-31 808-630-5XXX T-MOBILE USA, INC. 6529 HONOLULU HI
2003-12-31 920-471-9XXX T-MOBILE USA, INC. 6529 GREEN BAY WI
2003-12-30 323-202-5XXX T-MOBILE USA, INC. 6529 LSAN DA 13 CA
2003-12-30 323-202-6XXX T-MOBILE USA, INC. 6529 LSAN DA 13 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.