NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

66 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. 66
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
2006-09-27 925-755-6XXX T-MOBILE USA, INC. 6529 ANTIOCH CA
2006-09-26 253-737-7XXX T-MOBILE USA, INC. 6529 AUBURN WA
2006-09-26 314-686-8XXX T-MOBILE USA, INC. 6529 KIRKWOOD MO
2006-09-26 425-638-3XXX T-MOBILE USA, INC. 6529 BELLEVUE WA
2006-09-26 425-638-9XXX T-MOBILE USA, INC. 6529 BELLEVUE WA
2006-09-26 618-560-6XXX T-MOBILE USA, INC. 6529 COLLINSVL IL
2006-09-26 661-480-3XXX T-MOBILE USA, INC. 6529 PLDL PLDL CA
2006-09-26 661-480-4XXX T-MOBILE USA, INC. 6529 PLDL PLDL CA
2006-09-26 714-823-5XXX T-MOBILE USA, INC. 6529 GARDEN GRV CA
2006-09-26 714-823-6XXX T-MOBILE USA, INC. 6529 GARDEN GRV CA
2006-09-26 858-397-3XXX T-MOBILE USA, INC. 6529 SNDG MRMS CA
2006-09-26 916-880-6XXX T-MOBILE USA, INC. 6529 FAIR OAKS CA
2006-09-26 928-566-3XXX T-MOBILE USA, INC. 6529 LKHAVASUCY AZ
2006-09-26 951-553-4XXX T-MOBILE USA, INC. 6529 TEMECULA CA
2006-09-25 708-663-1XXX T-MOBILE USA, INC. 6529 CHICAGOHTS IL
2006-09-25 708-663-9XXX T-MOBILE USA, INC. 6529 CHICAGOHTS IL
2006-09-22 316-244-3XXX T-MOBILE USA, INC. 6529 EL DORADO KS
2006-09-22 316-244-4XXX T-MOBILE USA, INC. 6529 EL DORADO KS
2006-09-22 775-443-6XXX T-MOBILE USA, INC. 6529 CARSONCITY NV
2006-09-20 630-340-7XXX T-MOBILE USA, INC. 6529 AURORA IL
2006-09-20 630-340-8XXX T-MOBILE USA, INC. 6529 AURORA IL
2006-09-20 937-508-3XXX T-MOBILE USA, INC. 6529 URBANA OH
2006-09-19 541-848-0XXX T-MOBILE USA, INC. 6529 BEND OR
2006-09-19 626-382-9XXX T-MOBILE USA, INC. 6529 ALHAMBRA CA
2006-09-19 636-866-6XXX T-MOBILE USA, INC. 6529 ST CHARLES MO
2006-09-19 636-866-7XXX T-MOBILE USA, INC. 6529 ST CHARLES MO
2006-09-19 815-295-4XXX T-MOBILE USA, INC. 6529 KANKAKEE IL
2006-09-19 815-793-6XXX T-MOBILE USA, INC. 6529 DE KALB IL
2006-09-19 815-793-7XXX T-MOBILE USA, INC. 6529 DE KALB IL
2006-09-18 219-455-8XXX T-MOBILE USA, INC. 6529 GARY IN
2006-09-18 224-436-7XXX T-MOBILE USA, INC. 6529 LAKEFOREST IL
2006-09-18 310-751-8XXX T-MOBILE USA, INC. 6529 SNMN MRVS CA
2006-09-18 325-446-5XXX T-MOBILE USA, INC. 6529 JUNCTION TX
2006-09-18 424-653-4XXX T-MOBILE USA, INC. 6529 BEVERLYHLS CA
2006-09-18 562-382-5XXX T-MOBILE USA, INC. 6529 DOWNEY CA
2006-09-18 760-969-8XXX T-MOBILE USA, INC. 6529 PALM SPG CA
2006-09-18 806-626-2XXX T-MOBILE USA, INC. 6529 AMARILLO TX
2006-09-18 806-626-3XXX T-MOBILE USA, INC. 6529 AMARILLO TX
2006-09-18 909-567-3XXX T-MOBILE USA, INC. 6529 S BERNDINO CA
2006-09-18 909-567-4XXX T-MOBILE USA, INC. 6529 S BERNDINO CA
2006-09-18 909-705-6XXX T-MOBILE USA, INC. 6529 MENTONE CA
2006-09-18 951-823-9XXX T-MOBILE USA, INC. 6529 RIVERSIDE CA
2006-09-17 206-613-9XXX T-MOBILE USA, INC. 6529 SEATTLE WA
2006-09-17 206-676-2XXX T-MOBILE USA, INC. 6529 SEATTLE WA
2006-09-17 206-861-4XXX T-MOBILE USA, INC. 6529 SEATTLE WA
2006-09-17 415-738-9XXX T-MOBILE USA, INC. 6529 SNFC CNTRL CA
2006-09-17 509-494-4XXX T-MOBILE USA, INC. 6529 YAKIMA WA
2006-09-17 626-404-3XXX T-MOBILE USA, INC. 6529 COVINA CA
2006-09-17 626-542-5XXX T-MOBILE USA, INC. 6529 EL MONTE CA
2006-09-17 661-343-8XXX T-MOBILE USA, INC. 6529 BKFD MAIN CA

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.