NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

322 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

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 322
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
2009-08-27 517-726-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 VERMONTVL MI
2009-08-27 517-815-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TECUMSEH MI
2009-08-27 517-851-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 STOCKBDG MI
2009-08-27 517-883-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MASON MI
2009-08-27 517-889-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOLT MI
2009-08-27 517-909-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DANSVILLE MI
2009-08-27 517-910-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ONONDAGA MI
2009-08-27 517-919-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAINGSBURG MI
2009-08-27 517-920-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ADRIAN MI
2009-08-27 517-921-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ADDISON MI
2009-08-27 517-929-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOMER MI
2009-08-27 517-994-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PORTLAND MI
2009-08-27 517-996-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WILLIAMSTN MI
2009-08-27 608-609-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MADISON WI
2009-08-27 616-263-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CEDAR SPG MI
2009-08-27 616-378-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JAMESTOWN MI
2009-08-27 616-379-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HUDSONVL MI
2009-08-27 616-528-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CALEDONIA MI
2009-08-27 616-541-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DUTTON MI
2009-08-27 616-577-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SARANAC MI
2009-08-27 616-583-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BYRON CTR MI
2009-08-27 616-676-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ADA MI
2009-08-27 616-681-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DORR MI
2009-08-27 616-691-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRATTAN MI
2009-08-27 616-755-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 IONIA MI
2009-08-27 616-877-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MOLINE MI
2009-08-27 616-947-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARNE MI
2009-08-27 616-951-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROCKFORD MI
2009-08-27 616-952-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KENT CITY MI
2009-08-27 616-953-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ZEELAND MI
2009-08-27 616-987-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LOWELL MI
2009-08-27 920-809-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 APPLETON WI
2009-08-27 989-202-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUGHTONLK MI
2009-08-27 989-236-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MIDDLETON MI
2009-08-27 989-268-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 VESTABURG MI
2009-08-27 989-287-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAKEVIEW MI
2009-08-27 989-291-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SHERIDAN MI
2009-08-27 989-292-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ST JOHNS MI
2009-08-27 989-304-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EDMORE MI
2009-08-27 989-309-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 REMUS MI
2009-08-27 989-365-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SIX LAKES MI
2009-08-27 989-382-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BARRYTON MI
2009-08-27 989-383-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FOWLERPWMO MI
2009-08-27 989-436-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ITHACA MI
2009-08-27 989-654-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 STERLING MI
2009-08-27 989-682-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MAPLE RPD MI
2009-08-27 989-685-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROSE CITY MI
2009-08-27 989-813-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HUBBARDSTN MI
2009-08-27 989-836-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALGER MI
2009-08-27 989-842-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BRECKENRDG MI

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.