These are the shortening services we currently know of. LongURL is not limited to expanding only URLs from these services, however third-party applications often use this list to determine which URLs have been shortened.
Domains
tinyurl.com, is.gd, ur1.ca, ping.fm, snipurl.com, snurl.com, snipr.com, sn.im, bit.ly, tr.im, xrl.us, twurl.nl, x.se, poprl.com, url.ie, 6url.com, yep.it, ln-s.net, . . . → Read More: Known URL Shortening Services
