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
2005-04-04 316-842-1XXX T-MOBILE USA, INC. 6529 NEWTON KS
2005-04-04 513-544-1XXX T-MOBILE USA, INC. 6529 CINCINNATI OH
2005-04-04 513-544-2XXX T-MOBILE USA, INC. 6529 CINCINNATI OH
2005-04-04 513-545-0XXX T-MOBILE USA, INC. 6529 CINCINNATI OH
2005-04-04 513-545-1XXX T-MOBILE USA, INC. 6529 CINCINNATI OH
2005-04-04 513-545-2XXX T-MOBILE USA, INC. 6529 CINCINNATI OH
2005-04-01 208-757-2XXX T-MOBILE USA, INC. 6529 IDAHOFALLS ID
2005-04-01 310-256-7XXX T-MOBILE USA, INC. 6529 INGLEWOOD CA
2005-04-01 310-894-3XXX T-MOBILE USA, INC. 6529 CMTN CMTN CA
2005-04-01 619-793-6XXX T-MOBILE USA, INC. 6529 SNDG SNDG CA
2005-04-01 619-793-7XXX T-MOBILE USA, INC. 6529 SNDG SNDG CA
2005-04-01 619-793-8XXX T-MOBILE USA, INC. 6529 SNDG SNDG CA
2005-04-01 702-425-0XXX T-MOBILE USA, INC. 6529 LAS VEGAS NV
2005-04-01 909-435-1XXX T-MOBILE USA, INC. 6529 REDLANDS CA
2005-04-01 909-569-9XXX T-MOBILE USA, INC. 6529 DIAMONDBAR CA
2005-03-31 253-985-1XXX T-MOBILE USA, INC. 6529 TACOMA WA
2005-03-31 253-985-3XXX T-MOBILE USA, INC. 6529 TACOMA WA
2005-03-31 253-985-5XXX T-MOBILE USA, INC. 6529 TACOMA WA
2005-03-31 253-985-7XXX T-MOBILE USA, INC. 6529 TACOMA WA
2005-03-31 509-305-7XXX T-MOBILE USA, INC. 6529 SUNNYSIDE WA
2005-03-31 805-904-8XXX T-MOBILE USA, INC. 6529 ARROYOGRND CA
2005-03-31 916-475-4XXX T-MOBILE USA, INC. 6529 SCRM MAIN CA
2005-03-31 951-445-0XXX T-MOBILE USA, INC. 6529 MURRIETA CA
2005-03-30 304-521-9XXX T-MOBILE USA, INC. 6529 HNTNGTNZN1 WV
2005-03-30 310-698-9XXX T-MOBILE USA, INC. 6529 REDONDO CA
2005-03-30 323-527-2XXX T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2005-03-30 510-857-3XXX T-MOBILE USA, INC. 6529 FRNK MAIN CA
2005-03-30 520-223-1XXX T-MOBILE USA, INC. 6529 NOGALES AZ
2005-03-30 626-217-6XXX T-MOBILE USA, INC. 6529 LA PUENTE CA
2005-03-30 702-544-9XXX T-MOBILE USA, INC. 6529 LAS VEGAS NV
2005-03-30 775-247-7XXX T-MOBILE USA, INC. 6529 RENO NV
2005-03-30 818-282-0XXX T-MOBILE USA, INC. 6529 SNFN GRHL CA
2005-03-30 818-461-4XXX T-MOBILE USA, INC. 6529 VAN NUYS CA
2005-03-30 818-939-6XXX T-MOBILE USA, INC. 6529 VAN NUYS CA
2005-03-29 210-818-7XXX T-MOBILE USA, INC. 6529 SANANTONIO TX
2005-03-29 210-818-8XXX T-MOBILE USA, INC. 6529 SANANTONIO TX
2005-03-29 210-818-9XXX T-MOBILE USA, INC. 6529 SANANTONIO TX
2005-03-29 254-462-7XXX T-MOBILE USA, INC. 6529 KILLEEN TX
2005-03-29 254-462-8XXX T-MOBILE USA, INC. 6529 KILLEEN TX
2005-03-29 714-258-6XXX T-MOBILE USA, INC. 6529 SANTA ANA CA
2005-03-29 773-885-0XXX T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2005-03-29 773-885-1XXX T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2005-03-29 773-885-2XXX T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2005-03-29 773-885-3XXX T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2005-03-29 773-885-6XXX T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2005-03-29 806-445-9XXX T-MOBILE USA, INC. 6529 LUBBOCK TX
2005-03-28 224-538-9XXX T-MOBILE USA, INC. 6529 WAUKEGAN IL
2005-03-28 513-557-0XXX T-MOBILE USA, INC. 6529 CINCINNATI OH
2005-03-28 773-816-0XXX T-MOBILE USA, INC. 6529 CHICGOZN10 IL
2005-03-28 773-816-1XXX T-MOBILE USA, INC. 6529 CHICGOZN10 IL

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.