NumberResearch Membership · Data 09/26/2026

Recent thousands-block assignments

255 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
NEW CINGULAR WIRELESS PCS, LLC - IL 255
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
2016-11-10 616-727-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ADA MI
2016-11-10 616-727-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ADA MI
2016-11-10 616-727-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ADA MI
2016-11-10 660-441-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WARRENSBG MO
2016-11-10 734-853-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LIVONIA MI
2016-11-10 734-853-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LIVONIA MI
2016-11-10 734-853-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LIVONIA MI
2016-11-08 231-386-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NORTHPORT MI
2016-11-08 517-234-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOWELL MI
2016-11-08 517-234-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOWELL MI
2016-11-08 715-586-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OSSEO WI
2016-11-08 715-586-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OSSEO WI
2016-11-07 217-208-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHARLESTON IL
2016-11-07 224-763-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NORTHBROOK IL
2016-11-07 224-763-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NORTHBROOK IL
2016-11-07 317-699-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SHELBYVL IN
2016-11-07 317-734-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2016-11-07 317-734-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2016-11-07 317-734-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2016-11-07 317-734-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2016-11-07 317-734-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2016-11-07 317-734-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2016-11-07 331-775-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DOWNERSGRV IL
2016-11-07 573-284-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 VERSAILLES MO
2016-11-07 573-284-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 VERSAILLES MO
2016-11-07 573-430-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLAT RIVER MO
2016-11-07 573-430-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLAT RIVER MO
2016-11-07 574-709-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LOGANSPORT IN
2016-11-07 682-244-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLEBURNE TX
2016-11-07 737-414-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BUDA TX
2016-11-07 737-414-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BUDA TX
2016-11-07 737-414-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BUDA TX
2016-11-07 765-344-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROCKVILLE IN
2016-11-07 765-605-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FRANKFORT IN
2016-11-07 765-913-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARTINSVL IN
2016-11-04 248-916-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NORTHVILLE MI
2016-11-04 248-916-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NORTHVILLE MI
2016-11-04 248-938-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NORTHVILLE MI
2016-11-04 248-954-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FARMINGTON MI
2016-11-04 248-954-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FARMINGTON MI
2016-11-04 248-954-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FARMINGTON MI
2016-11-04 248-954-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FARMINGTON MI
2016-11-04 248-954-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FARMINGTON MI
2016-11-04 262-674-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JACKSON WI
2016-11-04 517-225-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOWELL MI
2016-11-04 681-285-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MORGANTOWN WV
2016-11-04 681-285-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MORGANTOWN WV
2016-11-04 810-219-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLINT MI
2016-11-04 810-219-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLINT MI
2016-11-04 810-219-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLINT MI

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.