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
2009-10-02 937-641-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 DAYTON OH
2009-10-01 330-617-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CANTON OH
2009-10-01 330-617-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CANTON OH
2009-10-01 330-906-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 AKRON OH
2009-10-01 330-906-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 AKRON OH
2009-09-30 330-389-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 RAVENNA OH
2009-09-30 801-410-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2009-09-30 801-410-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2009-09-29 309-501-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 WASHINGTON IL
2009-09-29 309-613-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PEKIN IL
2009-09-29 623-223-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2009-09-29 623-223-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2009-09-29 623-223-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2009-09-29 623-223-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2009-09-29 630-280-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 HINSDALE IL
2009-09-29 630-280-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 HINSDALE IL
2009-09-29 708-733-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICAGOHTS IL
2009-09-29 773-280-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICGOZN06 IL
2009-09-29 773-280-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHICGOZN06 IL
2009-09-29 773-280-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHICGOZN06 IL
2009-09-29 773-280-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHICGOZN06 IL
2009-09-29 773-280-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHICGOZN06 IL
2009-09-29 773-312-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICGOZN02 IL
2009-09-29 773-312-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHICGOZN02 IL
2009-09-29 773-312-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHICGOZN02 IL
2009-09-29 773-690-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2009-09-29 773-690-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2009-09-29 773-690-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2009-09-29 815-614-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 KANKAKEE IL
2009-09-29 815-710-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 MORRIS IL
2009-09-29 815-839-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 KANKAKEE IL
2009-09-28 216-421-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2009-09-28 216-421-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2009-09-28 216-421-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2009-09-28 217-550-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2009-09-28 217-550-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2009-09-28 309-989-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PEORIA IL
2009-09-28 309-989-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PEORIA IL
2009-09-28 309-989-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PEORIA IL
2009-09-28 331-643-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 AURORA IL
2009-09-28 331-684-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 AURORA IL
2009-09-28 425-622-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2009-09-28 618-216-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 WOOD RIVER IL
2009-09-28 618-251-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 WOOD RIVER IL
2009-09-28 630-962-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 AURORA IL
2009-09-25 330-934-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 NEWPHLDLPH OH
2009-09-25 330-934-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 NEWPHLDLPH OH
2009-09-24 216-856-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 INDEPNDNCE OH
2009-09-24 234-380-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 HUDSON OH
2009-09-24 234-650-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 MASSILLON OH

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.