NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

76 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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. 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
2023-08-16 442-416-9XXX T-MOBILE USA, INC. 6529 SAN MARCOS CA
2023-08-16 562-603-3XXX T-MOBILE USA, INC. 6529 NORWALK CA
2023-08-16 562-603-4XXX T-MOBILE USA, INC. 6529 NORWALK CA
2023-08-16 707-213-9XXX T-MOBILE USA, INC. 6529 BENICIA CA
2023-08-16 925-205-9XXX T-MOBILE USA, INC. 6529 DANVILLE CA
2023-08-15 307-243-9XXX T-MOBILE USA, INC. 6529 CASPER WY
2023-08-15 435-299-3XXX T-MOBILE USA, INC. 6529 PRICE UT
2023-08-15 572-363-1XXX T-MOBILE USA, INC. 6529 CHICKASHA OK
2023-08-15 572-363-2XXX T-MOBILE USA, INC. 6529 CHICKASHA OK
2023-08-15 572-363-3XXX T-MOBILE USA, INC. 6529 CHICKASHA OK
2023-08-15 572-363-4XXX T-MOBILE USA, INC. 6529 CHICKASHA OK
2023-08-15 707-810-2XXX T-MOBILE USA, INC. 6529 BENICIA CA
2023-08-15 707-997-3XXX T-MOBILE USA, INC. 6529 VALLEJO CA
2023-08-15 707-997-4XXX T-MOBILE USA, INC. 6529 VALLEJO CA
2023-08-15 715-697-5XXX T-MOBILE USA, INC. 6529 WISCOSNRPD WI
2023-08-15 715-697-7XXX T-MOBILE USA, INC. 6529 WISCOSNRPD WI
2023-08-15 715-712-5XXX T-MOBILE USA, INC. 6529 WISCOSNRPD WI
2023-08-15 760-916-8XXX T-MOBILE USA, INC. 6529 SAN MARCOS CA
2023-08-15 831-869-4XXX T-MOBILE USA, INC. 6529 MONTEREY CA
2023-08-15 840-230-1XXX T-MOBILE USA, INC. 6529 POMONA CA
2023-08-15 840-230-2XXX T-MOBILE USA, INC. 6529 POMONA CA
2023-08-15 951-635-8XXX T-MOBILE USA, INC. 6529 MURRIETA CA
2023-08-14 539-250-5XXX T-MOBILE USA, INC. 6529 BROKENARRW OK
2023-08-14 539-967-0XXX T-MOBILE USA, INC. 6529 BROKENARRW OK
2023-08-14 539-967-1XXX T-MOBILE USA, INC. 6529 BROKENARRW OK
2023-08-14 539-967-2XXX T-MOBILE USA, INC. 6529 BROKENARRW OK
2023-08-14 572-219-7XXX T-MOBILE USA, INC. 6529 SHAWNEE OK
2023-08-14 572-219-8XXX T-MOBILE USA, INC. 6529 SHAWNEE OK
2023-08-14 572-219-9XXX T-MOBILE USA, INC. 6529 SHAWNEE OK
2023-08-14 636-341-1XXX T-MOBILE USA, INC. 6529 FSSCRSTLCY MO
2023-08-14 636-341-2XXX T-MOBILE USA, INC. 6529 FSSCRSTLCY MO
2023-08-14 636-367-0XXX T-MOBILE USA, INC. 6529 TROY MO
2023-08-14 636-367-1XXX T-MOBILE USA, INC. 6529 TROY MO
2023-08-11 253-385-7XXX T-MOBILE USA, INC. 6529 GRAHAM WA
2023-08-11 253-385-8XXX T-MOBILE USA, INC. 6529 GRAHAM WA
2023-08-11 405-873-4XXX T-MOBILE USA, INC. 6529 SHAWNEE OK
2023-08-11 405-873-5XXX T-MOBILE USA, INC. 6529 SHAWNEE OK
2023-08-11 425-475-0XXX T-MOBILE USA, INC. 6529 HALLS LAKE WA
2023-08-11 425-725-2XXX T-MOBILE USA, INC. 6529 HALLS LAKE WA
2023-08-11 509-986-1XXX T-MOBILE USA, INC. 6529 ELLENSBURG WA
2023-08-11 564-202-2XXX T-MOBILE USA, INC. 6529 BREMERTON WA
2023-08-11 564-206-9XXX T-MOBILE USA, INC. 6529 BREMERTON WA
2023-08-11 564-230-0XXX T-MOBILE USA, INC. 6529 BREMERTON WA
2023-08-11 564-230-1XXX T-MOBILE USA, INC. 6529 BREMERTON WA
2023-08-11 564-262-1XXX T-MOBILE USA, INC. 6529 LONGVIEW WA
2023-08-11 618-986-9XXX T-MOBILE USA, INC. 6529 WATERLOO IL
2023-08-11 725-306-0XXX T-MOBILE USA, INC. 6529 LAS VEGAS NV
2023-08-11 725-306-1XXX T-MOBILE USA, INC. 6529 LAS VEGAS NV
2023-08-11 725-306-2XXX T-MOBILE USA, INC. 6529 LAS VEGAS NV
2023-08-11 725-306-3XXX T-MOBILE USA, INC. 6529 LAS VEGAS NV

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.