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
2004-06-09 626-216-1XXX T-MOBILE USA, INC. 6529 ALHAMBRA CA
2004-06-09 661-675-7XXX T-MOBILE USA, INC. 6529 PLDL PLDL CA
2004-06-09 661-675-8XXX T-MOBILE USA, INC. 6529 PLDL PLDL CA
2004-06-09 805-460-3XXX T-MOBILE USA, INC. 6529 ATASCADERO CA
2004-06-09 818-331-4XXX T-MOBILE USA, INC. 6529 BRBN BRBN CA
2004-06-09 970-978-7XXX T-MOBILE USA, INC. 6529 GREELEY CO
2004-06-08 310-658-7XXX T-MOBILE USA, INC. 6529 EL SEGUNDO CA
2004-06-08 310-895-3XXX T-MOBILE USA, INC. 6529 CULVERCITY CA
2004-06-08 310-904-2XXX T-MOBILE USA, INC. 6529 CULVERCITY CA
2004-06-08 312-363-7XXX T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2004-06-08 312-363-8XXX T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2004-06-08 312-363-9XXX T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2004-06-08 312-731-7XXX T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2004-06-08 312-731-8XXX T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2004-06-08 323-317-3XXX T-MOBILE USA, INC. 6529 LSAN DA 04 CA
2004-06-08 323-820-8XXX T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2004-06-08 708-856-6XXX T-MOBILE USA, INC. 6529 CHICAGOHTS IL
2004-06-08 708-856-7XXX T-MOBILE USA, INC. 6529 CHICAGOHTS IL
2004-06-08 818-675-1XXX T-MOBILE USA, INC. 6529 SNFN SNFN CA
2004-06-07 253-250-1XXX T-MOBILE USA, INC. 6529 TACOMAWVLY WA
2004-06-07 253-250-2XXX T-MOBILE USA, INC. 6529 TACOMAWVLY WA
2004-06-07 253-375-2XXX T-MOBILE USA, INC. 6529 GRAHAM WA
2004-06-07 253-375-3XXX T-MOBILE USA, INC. 6529 GRAHAM WA
2004-06-07 330-541-3XXX T-MOBILE USA, INC. 6529 KENT OH
2004-06-07 330-577-6XXX T-MOBILE USA, INC. 6529 RAVENNA OH
2004-06-07 510-300-4XXX T-MOBILE USA, INC. 6529 HAYWARD CA
2004-06-07 916-529-3XXX T-MOBILE USA, INC. 6529 SCRM MAIN CA
2004-06-07 916-529-5XXX T-MOBILE USA, INC. 6529 SCRM MAIN CA
2004-06-04 208-406-2XXX T-MOBILE USA, INC. 6529 POCATELLO ID
2004-06-04 307-256-6XXX T-MOBILE USA, INC. 6529 CHEYENNE WY
2004-06-04 307-256-7XXX T-MOBILE USA, INC. 6529 CHEYENNE WY
2004-06-04 360-630-4XXX T-MOBILE USA, INC. 6529 MT VERNON WA
2004-06-04 414-574-1XXX T-MOBILE USA, INC. 6529 MILWAUKZN5 WI
2004-06-04 509-594-1XXX T-MOBILE USA, INC. 6529 YAKIMA WA
2004-06-04 509-594-2XXX T-MOBILE USA, INC. 6529 YAKIMA WA
2004-06-04 775-219-8XXX T-MOBILE USA, INC. 6529 RENO NV
2004-06-03 847-613-5XXX T-MOBILE USA, INC. 6529 HALF DAY IL
2004-06-03 940-210-6XXX T-MOBILE USA, INC. 6529 DECATUR TX
2004-06-02 330-354-5XXX T-MOBILE USA, INC. 6529 HARTVILLE OH
2004-06-02 661-916-9XXX T-MOBILE USA, INC. 6529 LANCASTER CA
2004-06-02 773-314-6XXX T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2004-06-02 773-314-7XXX T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2004-05-28 253-217-0XXX T-MOBILE USA, INC. 6529 AUBURN WA
2004-05-28 480-323-8XXX T-MOBILE USA, INC. 6529 PHOENIX AZ
2004-05-28 480-323-9XXX T-MOBILE USA, INC. 6529 PHOENIX AZ
2004-05-28 520-252-5XXX T-MOBILE USA, INC. 6529 CASAGRANDE AZ
2004-05-28 520-252-6XXX T-MOBILE USA, INC. 6529 CASAGRANDE AZ
2004-05-28 520-252-7XXX T-MOBILE USA, INC. 6529 CASAGRANDE AZ
2004-05-28 520-271-0XXX T-MOBILE USA, INC. 6529 TUCSON AZ
2004-05-28 520-370-0XXX T-MOBILE USA, INC. 6529 TUCSON AZ

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.