NumberResearch Membership · Data 09/24/2026

Recent thousands-block assignments

70 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. 70
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
2009-03-02 937-831-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD OH
2009-02-27 304-860-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BECKLEY WV
2009-02-27 760-897-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 EL CENTRO CA
2009-02-25 217-220-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SPRINGFLD IL
2009-02-25 219-448-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 WESTVILLE IN
2009-02-25 262-627-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SLINGER WI
2009-02-25 330-356-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ALLIANCE OH
2009-02-25 419-908-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ASHLAND OH
2009-02-25 440-520-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 WILLOUGHBY OH
2009-02-25 618-512-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 GRANITE CY IL
2009-02-25 815-575-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 WOODSTOCK IL
2009-02-20 216-394-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2009-02-20 661-375-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 DELANO CA
2009-02-18 541-590-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 FLORENCE OR
2009-02-17 580-279-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ADA OK
2009-02-17 708-942-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ORLAND IL
2009-02-17 708-942-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ORLAND IL
2009-02-17 773-367-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2009-02-17 773-367-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2009-02-17 773-367-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2009-02-17 773-367-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2009-02-17 773-367-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2009-02-17 773-408-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHICGOZN06 IL
2009-02-17 909-272-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ARROWHEAD CA
2009-02-13 330-479-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CANTON OH
2009-02-13 330-942-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 YOUNGSTOWN OH
2009-02-13 513-291-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SEVEN MILE OH
2009-02-13 515-257-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2009-02-13 618-310-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BELLEVILLE IL
2009-02-12 208-416-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 COERDALENE ID
2009-02-12 573-452-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 FTLENARDWD MO
2009-02-12 773-940-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHICGOZN06 IL
2009-02-11 619-735-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHULAVISTA CA
2009-02-11 760-892-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 WARNER SPG CA
2009-02-11 808-861-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 HONOLULU HI
2009-02-11 928-315-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SOMERTON AZ
2009-02-10 773-809-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2009-02-09 414-215-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN5 WI
2009-02-09 435-237-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 BRIGHAM CY UT
2009-02-09 505-787-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 FARMINGTON NM
2009-02-09 510-779-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ELSBR-PINL CA
2009-02-09 623-755-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2009-02-09 814-790-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2009-02-09 814-790-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2009-02-09 815-585-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MORRIS IL
2009-02-09 815-585-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MORRIS IL
2009-02-06 331-643-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 AURORA IL
2009-02-06 641-324-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 NORTHWOOD IA
2009-02-06 682-558-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ARLINGTON TX
2009-02-06 682-559-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ARLINGTON TX

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.