shorturls.txt

0rz.tw
2tu.us
301url.com
6url.com
a2n.eu
adjix.com
azqq.com
b23.ru
b65.us
bit.ly
budurl.com
buk.me
canurl.com
cli.gs
cligs.com
curio.us
cuturls.com
decenturl.com
dn.vc
doiop.com
durl.us
dwarfurl.com
easyurl.net
eweri.com
ezurl.eu
faceto.us
ff.im
fff.to
fhurl.com
flingk.com
fly2.ws
g8l.us
get-shorty.com
get-url.com
hex.io
hotredirect.com
hurl.it
hurl.ws
icanhaz.com
idek.net
is.gd
iscool.net
just.as
korta.nu
liip.to
lin.cr
linkslice.com
liteurl.net
ln-s.net
lnkurl.com
loopt.us
lurl.no
memurl.com
metamark.net
minilien.com
moourl.com
myurl.in
nanoref.com
ne1.net
netshortcut.com
notlong.com
nutshellurl.com
oboeyasui.com
parv.us
ping.fm
piurl.com
poprl.com
quickurl.co.uk
qurlyq.com
reallytinyurl.com
redirx.com
ri.ms
rubyurl.com
s3nt.com
shink.de
shorl.com
short.ie
shortenurl.com
shorterlink.com
shortio.com
shortlinks.co.uk
shorturl.com
shoturl.us
shrinkr.com
shrinkurl.us
shurl.net
shw.me
simurl.com
smallr.com
smurl.com
sn.vc
snipr.com
snipurl.com
snurl.com
spedr.com
srs.li
starturl.com
surl.co.uk
tighturl.com
tiniuri.com
tinylink.com
tinyurl.com
tr.im
truncurl.com
tubeurl.com
turo.us
tweetl.com
twittu.ms
twiturl.de
twurl.com
twurl.nl
u.mavrev.com
u76.org
ub0.cc
ulimit.com
ur1.ca
url.co.uk
url.ie
url.lotpatrol.com
urlao.com
urlbee.com
urlborg.com
urlbrief.com
urlcut.com
urlcutter.com
urlhawk.com
urlkiss.com
urltea.com
urlvi.be
urlx.ie
vdirect.com
wapurl.co.uk
webalias.com
wipi.es
x.se
xil.in
xrl.us
yatuc.com
yep.it
zi.ma
zootit.com
zurl.ws
zz.gd

This is a nice selection. Last save date was in 2009. Regardless, that's sufficient time for a domain to be registered, the registration interval to have expired, not be renewed, then parked and repeated, several times over.