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
2005-09-20 414-326-8XXX T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2005-09-20 562-656-9XXX T-MOBILE USA, INC. 6529 PICORIVERA CA
2005-09-20 661-607-9XXX T-MOBILE USA, INC. 6529 SNCA NHCS CA
2005-09-20 773-641-6XXX T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2005-09-20 773-641-7XXX T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2005-09-20 808-499-7XXX T-MOBILE USA, INC. 6529 HONOLULU HI
2005-09-20 818-524-8XXX T-MOBILE USA, INC. 6529 BRBN BRBN CA
2005-09-20 818-793-9XXX T-MOBILE USA, INC. 6529 VAN NUYS CA
2005-09-20 831-207-5XXX T-MOBILE USA, INC. 6529 HOLLISTER CA
2005-09-20 909-631-4XXX T-MOBILE USA, INC. 6529 CHINO CA
2005-09-20 909-705-9XXX T-MOBILE USA, INC. 6529 MENTONE CA
2005-09-19 209-740-5XXX T-MOBILE USA, INC. 6529 TRACY CA
2005-09-19 210-372-2XXX T-MOBILE USA, INC. 6529 SANANTONIO TX
2005-09-19 210-372-3XXX T-MOBILE USA, INC. 6529 SANANTONIO TX
2005-09-19 661-817-4XXX T-MOBILE USA, INC. 6529 BKFD MAIN CA
2005-09-19 773-541-0XXX T-MOBILE USA, INC. 6529 CHICGOZN02 IL
2005-09-19 773-541-1XXX T-MOBILE USA, INC. 6529 CHICGOZN02 IL
2005-09-19 806-382-0XXX T-MOBILE USA, INC. 6529 AMARILLO TX
2005-09-19 806-382-2XXX T-MOBILE USA, INC. 6529 AMARILLO TX
2005-09-16 440-339-2XXX T-MOBILE USA, INC. 6529 PAINESVL OH
2005-09-16 512-394-2XXX T-MOBILE USA, INC. 6529 AUSTIN TX
2005-09-16 602-626-4XXX T-MOBILE USA, INC. 6529 PHOENIX AZ
2005-09-16 801-682-7XXX T-MOBILE USA, INC. 6529 KAYSVILLE UT
2005-09-15 253-683-9XXX T-MOBILE USA, INC. 6529 TACOMA WA
2005-09-15 310-651-0XXX T-MOBILE USA, INC. 6529 BEVERLYHLS CA
2005-09-15 310-691-4XXX T-MOBILE USA, INC. 6529 BEVERLYHLS CA
2005-09-15 310-691-6XXX T-MOBILE USA, INC. 6529 BEVERLYHLS CA
2005-09-15 330-447-0XXX T-MOBILE USA, INC. 6529 NEWPHLDLPH OH
2005-09-15 619-315-7XXX T-MOBILE USA, INC. 6529 LA MESA CA
2005-09-15 714-873-0XXX T-MOBILE USA, INC. 6529 ANAHEIM CA
2005-09-15 714-873-1XXX T-MOBILE USA, INC. 6529 ANAHEIM CA
2005-09-15 714-873-2XXX T-MOBILE USA, INC. 6529 ANAHEIM CA
2005-09-15 714-873-3XXX T-MOBILE USA, INC. 6529 ANAHEIM CA
2005-09-15 714-873-4XXX T-MOBILE USA, INC. 6529 ANAHEIM CA
2005-09-15 714-873-9XXX T-MOBILE USA, INC. 6529 ANAHEIM CA
2005-09-15 818-477-7XXX T-MOBILE USA, INC. 6529 NORTHRIDGE CA
2005-09-15 818-668-4XXX T-MOBILE USA, INC. 6529 RESEDA CA
2005-09-15 831-406-7XXX T-MOBILE USA, INC. 6529 WATSONVL CA
2005-09-14 541-497-3XXX T-MOBILE USA, INC. 6529 ALBANY OR
2005-09-14 773-827-1XXX T-MOBILE USA, INC. 6529 CHICGOZN06 IL
2005-09-14 773-827-2XXX T-MOBILE USA, INC. 6529 CHICGOZN06 IL
2005-09-13 206-373-1XXX T-MOBILE USA, INC. 6529 SEATTLE WA
2005-09-13 310-591-6XXX T-MOBILE USA, INC. 6529 SNMN MRVS CA
2005-09-13 541-244-0XXX T-MOBILE USA, INC. 6529 GRANTSPASS OR
2005-09-13 563-676-1XXX T-MOBILE USA, INC. 6529 DAVENPORT IA
2005-09-13 618-204-3XXX T-MOBILE USA, INC. 6529 MT VERNON IL
2005-09-13 661-839-8XXX T-MOBILE USA, INC. 6529 PLDL PLDL CA
2005-09-13 715-302-2XXX T-MOBILE USA, INC. 6529 WAUSAU WI
2005-09-13 760-216-0XXX T-MOBILE USA, INC. 6529 VISTA CA
2005-09-13 775-412-7XXX T-MOBILE USA, INC. 6529 RENO 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.