NumberResearch Membership · Data 09/24/2026

Recent thousands-block assignments

69 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/24/2026

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. 69
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
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2007-11-06 331-645-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ELMHURST IL
2007-11-06 331-645-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ELMHURST IL
2007-11-06 331-645-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ELMHURST IL
2007-11-06 331-645-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ELMHURST IL
2007-11-06 331-645-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ELMHURST IL
2007-11-06 440-453-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ELYRIA OH
2007-11-06 712-231-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 HOSPERS IA
2007-11-05 414-236-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN4 WI
2007-11-05 414-334-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN5 WI
2007-11-05 618-917-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 WOOD RIVER IL
2007-11-05 928-988-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 YUMA AZ
2007-11-05 928-988-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 YUMA AZ
2007-11-05 928-988-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 YUMA AZ
2007-11-02 512-909-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2007-11-02 512-909-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2007-11-02 512-909-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2007-11-02 512-909-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2007-11-02 512-909-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2007-11-02 636-290-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 TROY MO
2007-11-01 773-886-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2007-11-01 773-886-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2007-10-31 224-578-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PALATINE IL
2007-10-31 330-389-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 RAVENNA OH
2007-10-31 505-923-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ALBUQURQUE NM
2007-10-31 618-709-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 GRANITE CY IL
2007-10-31 720-579-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2007-10-31 760-587-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BRAWLEY CA
2007-10-31 928-225-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 FLAGSTAFF AZ
2007-10-31 928-266-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 FLAGSTAFF AZ
2007-10-30 314-685-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2007-10-30 323-706-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LSAN DA 14 CA
2007-10-30 323-710-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LSAN DA 14 CA
2007-10-30 479-966-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 FAYETTEVL AR
2007-10-30 480-307-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2007-10-30 515-822-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2007-10-30 719-691-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LAMAR CO
2007-10-30 720-257-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2007-10-30 760-704-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ENCINITAS CA
2007-10-30 808-485-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 HONOLULU HI
2007-10-29 209-356-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ATWATER CA
2007-10-29 216-456-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2007-10-29 216-482-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2007-10-29 216-482-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2007-10-29 216-482-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2007-10-29 216-482-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2007-10-29 216-482-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2007-10-29 619-569-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 EL CAJON CA
2007-10-29 773-543-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2007-10-29 773-543-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2007-10-29 918-235-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SALLISAW OK

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.