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
2004-06-17 773-332-1XXX T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2004-06-17 773-458-6XXX T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2004-06-17 773-527-9XXX T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2004-06-17 773-569-2XXX T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2004-06-17 773-632-6XXX T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2004-06-17 806-544-9XXX T-MOBILE USA, INC. 6529 LUBBOCK TX
2004-06-17 806-577-0XXX T-MOBILE USA, INC. 6529 LUBBOCK TX
2004-06-17 847-406-6XXX T-MOBILE USA, INC. 6529 WAUKEGAN IL
2004-06-17 847-890-5XXX T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2004-06-16 253-590-3XXX T-MOBILE USA, INC. 6529 TACOMA WA
2004-06-16 253-590-6XXX T-MOBILE USA, INC. 6529 TACOMA WA
2004-06-16 310-533-7XXX T-MOBILE USA, INC. 6529 TORRANCE CA
2004-06-16 310-972-8XXX T-MOBILE USA, INC. 6529 TORRANCE CA
2004-06-16 360-286-0XXX T-MOBILE USA, INC. 6529 SILVERDALE WA
2004-06-16 360-485-9XXX T-MOBILE USA, INC. 6529 OLYMPIA WA
2004-06-16 415-216-3XXX T-MOBILE USA, INC. 6529 SNFC CNTRL CA
2004-06-16 415-216-8XXX T-MOBILE USA, INC. 6529 SNFC CNTRL CA
2004-06-16 415-217-9XXX T-MOBILE USA, INC. 6529 SNFC CNTRL CA
2004-06-16 415-318-9XXX T-MOBILE USA, INC. 6529 SNFC CNTRL CA
2004-06-16 432-978-5XXX T-MOBILE USA, INC. 6529 TERMINAL TX
2004-06-16 510-962-0XXX T-MOBILE USA, INC. 6529 HAYWARD CA
2004-06-16 619-243-6XXX T-MOBILE USA, INC. 6529 SNDG SNDG CA
2004-06-16 619-278-9XXX T-MOBILE USA, INC. 6529 SNDG SNDG CA
2004-06-16 619-402-5XXX T-MOBILE USA, INC. 6529 EL CAJON CA
2004-06-16 619-757-5XXX T-MOBILE USA, INC. 6529 SNDG SNDG CA
2004-06-16 626-383-0XXX T-MOBILE USA, INC. 6529 COVINA CA
2004-06-16 682-432-4XXX T-MOBILE USA, INC. 6529 FORT WORTH TX
2004-06-16 714-369-5XXX T-MOBILE USA, INC. 6529 HUNTITNBCH CA
2004-06-16 719-761-0XXX T-MOBILE USA, INC. 6529 COLORDOSPG CO
2004-06-16 719-761-2XXX T-MOBILE USA, INC. 6529 COLORDOSPG CO
2004-06-15 562-290-3XXX T-MOBILE USA, INC. 6529 LONG BEACH CA
2004-06-15 562-290-7XXX T-MOBILE USA, INC. 6529 LONG BEACH CA
2004-06-15 636-667-5XXX T-MOBILE USA, INC. 6529 WASHINGTON MO
2004-06-15 661-750-1XXX T-MOBILE USA, INC. 6529 TEHACHAPI CA
2004-06-15 707-360-7XXX T-MOBILE USA, INC. 6529 SANTA ROSA CA
2004-06-15 805-300-6XXX T-MOBILE USA, INC. 6529 THOUSAOAKS CA
2004-06-15 928-208-1XXX T-MOBILE USA, INC. 6529 LKHAVASUCY AZ
2004-06-14 213-327-9XXX T-MOBILE USA, INC. 6529 LSAN DA 01 CA
2004-06-14 213-550-8XXX T-MOBILE USA, INC. 6529 LSAN DA 01 CA
2004-06-14 213-550-9XXX T-MOBILE USA, INC. 6529 LSAN DA 01 CA
2004-06-14 310-597-2XXX T-MOBILE USA, INC. 6529 W ANGELES CA
2004-06-14 509-714-7XXX T-MOBILE USA, INC. 6529 SPOKANE WA
2004-06-14 719-369-0XXX T-MOBILE USA, INC. 6529 PUEBLO CO
2004-06-14 719-423-9XXX T-MOBILE USA, INC. 6529 PUEBLO CO
2004-06-14 760-702-8XXX T-MOBILE USA, INC. 6529 INDIO CA
2004-06-14 760-702-9XXX T-MOBILE USA, INC. 6529 INDIO CA
2004-06-14 815-823-6XXX T-MOBILE USA, INC. 6529 JOLIET IL
2004-06-14 815-823-7XXX T-MOBILE USA, INC. 6529 JOLIET IL
2004-06-14 858-373-7XXX T-MOBILE USA, INC. 6529 LA JOLLA CA
2004-06-14 909-561-2XXX T-MOBILE USA, INC. 6529 FONTANA 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.