NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

915 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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 365
NEW CINGULAR WIRELESS PCS, LLC - DC 329
NEW CINGULAR WIRELESS PCS, LLC - GA 131
NEW CINGULAR WIRELESS PCS, LLC 90
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
AssignedBlockAssigneeOCNRate centerState
2004-12-14 334-328-7XXX NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MONTGOMERY AL
2004-12-14 334-328-8XXX NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MONTGOMERY AL
2004-12-14 334-590-8XXX NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MONTGOMERY AL
2004-12-14 334-590-9XXX NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MONTGOMERY AL
2004-12-14 517-224-0XXX NEW CINGULAR WIRELESS PCS, LLC - IL 6534 POTTERVL MI
2004-12-14 517-386-0XXX NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EATON RPD MI
2004-12-14 517-507-1XXX NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LANSING MI
2004-12-14 517-623-7XXX NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DANSVILLE MI
2004-12-14 517-626-0XXX NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDLEDGE MI
2004-12-14 517-628-0XXX NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ONONDAGA MI
2004-12-14 517-651-0XXX NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAINGSBURG MI
2004-12-14 517-667-3XXX NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHARLOTTE MI
2004-12-14 517-668-5XXX NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DE WITT MI
2004-12-14 517-743-2XXX NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PORTLAND MI
2004-12-14 517-833-0XXX NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MASON MI
2004-12-14 517-992-1XXX NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WILLIAMSTN MI
2004-12-14 606-224-4XXX NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LONDON KY
2004-12-14 606-224-6XXX NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LONDON KY
2004-12-14 606-224-9XXX NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LONDON KY
2004-12-14 616-209-2XXX NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HUDSONVL MI
2004-12-14 616-217-1XXX NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BYRON CTR MI
2004-12-14 616-322-1XXX NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2004-12-14 616-359-2XXX NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DORR MI
2004-12-14 616-421-5XXX NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LOWELL MI
2004-12-14 616-425-1XXX NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ADA MI
2004-12-14 616-431-1XXX NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARNE MI
2004-12-14 616-433-5XXX NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROCKFORD MI
2004-12-14 616-499-1XXX NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOLLAND MI
2004-12-14 616-524-2XXX NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRATTAN MI
2004-12-14 616-631-0XXX NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MOLINE MI
2004-12-14 616-642-4XXX NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SARANAC MI
2004-12-14 616-678-1XXX NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KENT CITY MI
2004-12-14 616-841-0XXX NEW CINGULAR WIRELESS PCS, LLC - IL 6534 IONIA MI
2004-12-14 616-871-4XXX NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DUTTON MI
2004-12-14 616-879-5XXX NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ZEELAND MI
2004-12-14 616-935-2XXX NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDHAVEN MI
2004-12-14 989-593-5XXX NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FOWLERPWMO MI
2004-12-14 989-855-4XXX NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MUIR MI
2004-12-13 240-344-8XXX NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FREDERICK MD
2004-12-13 240-529-2XXX NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FREDERICK MD
2004-12-13 302-430-2XXX NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
2004-12-13 302-430-3XXX NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
2004-12-13 302-430-4XXX NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
2004-12-13 302-430-6XXX NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
2004-12-13 302-430-8XXX NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
2004-12-13 302-430-9XXX NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
2004-12-13 302-766-0XXX NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HOCKESSIN DE
2004-12-13 302-766-2XXX NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HOCKESSIN DE
2004-12-13 302-883-1XXX NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DOVER DE
2004-12-13 302-883-4XXX NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DOVER DE

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.