Some Other ASCII gTLD and ccTLD Single-Letter Domains
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Domain name
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Current user
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Usage
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a.co
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URL shortcut for Amazon, generally used by Amazon in SMS messages for informing purchasers of activity on an order
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a.org
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Astana Inc.
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c.ai
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c.cc
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Brian Cartmell
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c.im
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C.IM is a general, mainly English-speaking Mastadon instance.
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c.org
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URL shortcut for change.org
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d.co.il
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Zap Golden Pages
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d.gs
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URL shortcut for dragonsayen.com (DraGonSayen)
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d.tube
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DTube
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Crypto-based and decentralized video-sharing platform
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e.srl
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Homepage URL
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e.im
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URL shortcut for MailTime Email Messenger
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e.gg
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f.org
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FinTech Labs
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g.cn
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Google's official URL shortcut to help Chinese users locate Google
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g.co
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Google's official URL shortcut
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g.gg
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Global Grid Gallery
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g.gl
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Greenland
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g.network
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G.Network
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London based ISP
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g.vu
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g.vu
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URL Shortener
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h.plus
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Homepage for the H+ research project, owned by Alessandro Perilli
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k.tt
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URL shortcut for Citinews
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k.vu
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afraid.org
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l.ink
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Top Level Design
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m.co
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Volvo Cars' car sharing service
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m.me
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URL shortcut for Messenger
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m.page
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URL shortcut for mmm.page website builder
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n.pr
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URL shortcut for public radio network NPR
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o.co
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URL shortcut for Overstock.com
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q.digital
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Q.Digital, Inc.
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r.nf
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LibReddit instance
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s.co
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URL shortcut to Snapchat's download page
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s.de
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Sparkassen-Finanzportal
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URL shortcut for sparkasse.de
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t.co
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Twitter & X Corp.
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Twitter's official URL shortcut
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t.ly
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t.ly
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URL Shortener
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t.me
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URL shortcut for Telegram
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u.ae
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The United Arab Emirates' Government portal
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u.to
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u.to
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An URL Shortener
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v.me
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URL shortcut for Visa
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v.org
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V Foundation
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w.org
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Redirects to wordpress.org, has some assets for wordpress.org (under s.w.org)
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w.wiki
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The official Wikimedia Foundation URL Shortener
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x.ai
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Homepage URL
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x.team
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Shortcut to X Careers, a service at X Development
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x.company
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Homepage for X Development
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y.org
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Shortcut to YMCA
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n.school
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The New School
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Website of The New School in Moscow
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* Arranged into mobile/tablet compatibility