What is an authorization code?

Aus DD24 Wiki

The so called authorization code is some kind of security key to prevent unauthorized transfers. If a domainname should be transfered you always need an authorization code. The code must always be requested at your current registrar.

The following transferable Domains actually need an authorization code.

aero
ag
com.ag
net.ag
org.ag
biz
bz
cn
com.cn
net.cn
org.cn
com
in
co.in
firm.in
gen.in
ind.in
net.in
org.in
info
la
mn
mobi
name
net
org
pl
biz.pl
com.pl
info.pl
net.pl
org.pl
sc
com.sc
net.sc
org.sc
tk
travel
tw
club.tw
com.tw
ebiz.tw
game.tw
idv.tw
org.tw
us
vc
com.vc
net.vc
org.vc