NumberResearch Membership · Data 09/26/2026

Recent thousands-block assignments

68 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/26/2026

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. 68
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
2018-03-05 712-305-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 LE MARS IA
2018-03-05 712-335-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 POCAHONTAS IA
2018-03-05 712-351-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 HAVELOCK IA
2018-03-05 712-351-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 HAVELOCK IA
2018-03-05 712-448-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PAULLINA IA
2018-03-05 712-459-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 HARTLEY IA
2018-03-05 712-459-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 HARTLEY IA
2018-03-05 712-475-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 GEORGE IA
2018-03-05 712-626-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PRIMGHAR IA
2018-03-05 712-686-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SCRANTON IA
2018-03-05 712-686-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SCRANTON IA
2018-03-05 712-730-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 STORM LAKE IA
2018-03-05 712-765-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ESTHERVL IA
2018-03-05 712-843-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ALBERTCITY IA
2018-03-05 712-843-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ALBERTCITY IA
2018-03-05 712-904-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 AKRON IA
2018-03-05 779-248-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 GALENA IL
2018-03-05 779-248-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 GALENA IL
2018-03-05 951-449-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2018-03-05 951-449-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2018-03-05 951-449-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2018-03-05 951-550-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2018-03-02 309-317-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ROCKISLAND IL
2018-03-02 309-317-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ROCKISLAND IL
2018-03-02 309-317-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ROCKISLAND IL
2018-03-02 515-387-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MAXWELL IA
2018-03-02 515-388-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ROLAND IA
2018-03-02 515-388-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ROLAND IA
2018-03-02 515-434-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MCCALLSBG IA
2018-03-02 515-434-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MCCALLSBG IA
2018-03-02 641-381-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 NORTHWOOD IA
2018-03-02 641-541-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SIGOURNEY IA
2018-03-02 641-557-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 NEWHAMPTON IA
2018-03-02 641-666-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 OSAGE IA
2018-03-02 641-909-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 LAKE MILLS IA
2018-03-02 779-250-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 STERLING IL
2018-03-01 515-206-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 FORT DODGE IA
2018-03-01 515-206-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 FORT DODGE IA
2018-03-01 515-332-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 HUMBOLDT IA
2018-03-01 515-361-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ALGONA IA
2018-03-01 515-361-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ALGONA IA
2018-03-01 515-602-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CLARION IA
2018-03-01 515-603-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 EAGLEGROVE IA
2018-03-01 515-606-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 WEBSTER CY IA
2018-03-01 641-202-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CRESTON IA
2018-03-01 641-231-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CLEAR LAKE IA
2018-03-01 641-231-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CLEAR LAKE IA
2018-03-01 641-242-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BLOOMFIELD IA
2018-03-01 641-244-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 OTTUMWA IA
2018-03-01 641-244-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 OTTUMWA IA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.