Powered by KnowEm, Check Usernames allows you to check the availability of your brand or username on 160 popular Social Networking and Social Bookmarking websites.

Also check out our Premium Service, which registers your brand or username on up to 300 popular social media sites.
The Original Username Checking Service

Check the use of your brand or username on 160 Social Networks:

  • KnowEm KnowEm
  • eHow eHow
  • Daily Motion Daily Motion
  • Word Press Word Press
  • Slide Share Slide Share
  • Yahoo Yahoo
  • scribd scribd
  • Image Shack Image Shack
  • Picasa Picasa
  • Friendster Friendster
  • YouTube YouTube
  • Yahoo Meme Yahoo Meme
  • Linked In Linked In
  • Etsy Etsy
  • eventful eventful
  • Zillow Zillow
  • Blogger Blogger
  • Ebay Ebay
  • MySpace MySpace
  • Wikipedia Wikipedia
  • Flickr Flickr
  • Digg Digg
  • Fotolog Fotolog
  • Xanga Xanga
  • Last FM Last FM
  • Disqus Disqus
  • Twitter Twitter
  • Huffington Post Huffington Post
  • eSnips eSnips
  • Netlog Netlog
  • Diigo Diigo
  • Instructables Instructables
  • Meta Cafe Meta Cafe
  • Github Github
  • Discogs Discogs
  • Red Bubble Red Bubble
  • Hubpages Hubpages
  • Gather Gather
  • Epinions Epinions
  • Vimeo Vimeo
  • Mixx Mixx
  • iLike iLike
  • Slash Dot Slash Dot
  • Mister Wong Mister Wong
  • FanPop FanPop
  • Clipmarks Clipmarks
  • Bebo Bebo
  • Stumble Upon Stumble Upon
  • Type Pad Type Pad
  • Technorati Technorati
  • Livevideo Livevideo
  • Live Journal Live Journal
  • Pandora Pandora
  • SmugMug SmugMug
  • Web Shots Web Shots
  • Fortythree Things Fortythree Things
  • Multiply Multiply
  • Viddler Viddler
  • Justin TV Justin TV
  • Squidoo Squidoo
  • Cafe Mom Cafe Mom
  • uStream uStream
  • Spark People Spark People
  • Hulu Hulu
  • Folkd Folkd
  • Mahalo Mahalo
  • Buzznet Buzznet
  • Ball Hype Ball Hype
  • Colour Lovers Colour Lovers
  • Get Satisfaction Get Satisfaction
  • Identica Identica
  • Stickam Stickam
  • Rate It All! Rate It All!
  • Plurk Plurk
  • Tiny URL Tiny URL
  • Now Public Now Public
  • Reddit Reddit
  • Tribe Tribe
  • Intense Debate Intense Debate
  • Mobango Mobango
  • Black Planet Black Planet
  • ActiveRain ActiveRain
  • Blink List Blink List
  • Deviant Art Deviant Art
  • Blog Catalog Blog Catalog
  • Ultimate Guitar Ultimate Guitar
  • CarDomain CarDomain
  • Break Break
  • Kaboodle Kaboodle
  • Fark Fark
  • Crunchy Roll Crunchy Roll
  • Jamendo Jamendo
  • Newsvine Newsvine
  • Steam Steam
  • Tumblr Tumblr
  • Kongregate Kongregate
  • Qype Qype
  • Cheezburger Cheezburger
  • Blurt It Blurt It
  • Armchair GM Armchair GM
  • Current Current
  • Odeo Odeo
  • Funny Or Die Funny Or Die
  • Sky Rock Sky Rock
  • Virb Virb
  • Posterous Posterous
  • BlipFM BlipFM
  • Revver Revver
  • Visualize Us Visualize Us
  • Anobii Anobii
  • Badoo Badoo
  • Bright Kite Bright Kite
  • Reverb Nation Reverb Nation
  • Propeller Propeller
  • SocialSpark SocialSpark
  • Delicious Delicious
  • Kiva Kiva
  • My Mashable My Mashable
  • Picture Trail Picture Trail
  • The Escapist The Escapist
  • Cite U Like Cite U Like
  • JamBase JamBase
  • Wakoopa Wakoopa
  • Sound Cloud Sound Cloud
  • All Consuming All Consuming
  • Faves Faves
  • Style Hive Style Hive
  • spoke spoke
  • Zooomr Zooomr
  • Snooth Snooth
  • Blurb Blurb
  • Zorpia Zorpia
  • iReport iReport
  • iJigg iJigg
  • Plime Plime
  • Families Families
  • Play Fire Play Fire
  • User Voice User Voice
  • Eons Eons
  • Qik Qik
  • FriendFeed FriendFeed
  • Issuu Issuu
  • Fun Advice Fun Advice
  • SevenLoad SevenLoad
  • Fat Secret Fat Secret
  • FourSquare FourSquare
  • Searchles Searchles
  • Amie Street Amie Street
  • Dipity Dipity
  • DailyBooth DailyBooth
  • Blippr Blippr
  • Amplify Amplify
  • This Next This Next
  • Bukisa Bukisa
  • The Sixty One The Sixty One
  • Howcast Howcast
  • Soup Soup
  • Vox Vox
  • Post Crossing Post Crossing
  • Behance Behance
CheckUserNames.com is powered by KnowEm Social Media Name Registrar

Follow us on Twitter for updates: @knowem, @barrywise, @streko