<s>
An	O
Auth-Code	B-Protocol
,	O
also	O
known	O
as	O
an	O
EPP	B-Protocol
code	I-Protocol
,	O
authorization	O
code	O
,	O
transfer	O
code	O
,	O
or	O
Auth-Info	O
Code	O
,	O
is	O
a	O
generated	O
passcode	O
required	O
to	O
transfer	O
an	O
Internet	O
domain	O
name	O
between	O
domain	B-Application
registrars	I-Application
;	O
the	O
code	O
is	O
intended	O
to	O
indicate	O
that	O
the	O
domain	O
name	O
owner	O
has	O
authorized	O
the	O
transfer	O
.	O
</s>
<s>
Auth-Codes	B-Protocol
are	O
created	O
by	O
the	O
current	O
registrar	O
of	O
the	O
domain	O
.	O
</s>
<s>
The	O
registrar	O
is	O
required	O
to	O
provide	O
the	O
Auth-Code	B-Protocol
to	O
the	O
domain	O
name	O
owner	O
within	O
five	O
calendar	O
days	O
of	O
the	O
owner	O
's	O
request	O
,	O
and	O
ICANN	B-Application
accepts	O
complaints	O
about	O
registrars	O
that	O
do	O
not	O
.	O
</s>
<s>
Some	O
registrars	O
allow	O
Auth-Codes	B-Protocol
to	O
be	O
generated	O
by	O
the	O
domain	O
owners	O
through	O
the	O
registrar	O
's	O
website	O
.	O
</s>
<s>
All	O
Generic	O
top-level	O
domains	O
use	O
an	O
Auth-Code	B-Protocol
in	O
their	O
transfer	O
process	O
.	O
</s>
<s>
The	O
.nz	B-General_Concept
domain	B-Protocol
registry	I-Protocol
used	O
an	O
eight-character	O
Auth-Code	B-Protocol
called	O
Unique	O
Domain	O
Authentication	O
Identifier	O
(	O
UDAI	O
)	O
for	O
domain	O
transfers	O
and	O
name	O
conflict	O
procedures	O
.	O
</s>
<s>
With	O
the	O
.nz	B-General_Concept
registry	O
update	O
in	O
2022	O
the	O
term	O
UDAI	O
was	O
retired	O
,	O
and	O
the	O
passcode	O
is	O
now	O
also	O
referred	O
to	O
as	O
an	O
Auth-Code	B-Protocol
.	O
</s>
<s>
The	O
.uk	B-Application
and	O
.co.uk	O
domain	B-Protocol
registry	I-Protocol
,	O
instead	O
of	O
using	O
a	O
passcode	O
,	O
has	O
the	O
domain	O
owner	O
specify	O
the	O
new	O
registrar	O
using	O
the	O
old	O
registrar	O
.	O
</s>
<s>
Some	O
registries	O
use	O
a	O
document	O
based	O
approach	O
either	O
in	O
conjunction	O
with	O
or	O
instead	O
of	O
an	O
Auth-Code	B-Protocol
.	O
</s>
<s>
An	O
example	O
for	O
that	O
is	O
.hu	B-General_Concept
for	O
which	O
the	O
registrant	O
has	O
to	O
fill	O
out	O
a	O
document	O
and	O
send	O
it	O
to	O
the	O
new	O
registrar	O
,	O
who	O
sends	O
it	O
to	O
the	O
registry	O
to	O
fulfill	O
the	O
domain	O
transfer	O
.	O
</s>
<s>
The	O
.is	B-Application
domain	B-Protocol
registry	I-Protocol
uses	O
the	O
domains	O
admin	O
NIC	B-Protocol
handle	I-Protocol
and	O
the	O
old	O
registrar	O
has	O
to	O
update	O
it	O
to	O
the	O
new	O
registrars	O
NIC	B-Protocol
handle	I-Protocol
.	O
</s>
