<s>
The	O
Extensible	B-Protocol
Provisioning	I-Protocol
Protocol	I-Protocol
(	O
EPP	O
)	O
is	O
a	O
flexible	O
protocol	O
designed	O
for	O
allocating	O
objects	O
within	O
registries	O
over	O
the	O
Internet	O
.	O
</s>
<s>
The	O
motivation	O
for	O
the	O
creation	O
of	O
EPP	O
was	O
to	O
create	O
a	O
robust	O
and	O
flexible	O
protocol	O
that	O
could	O
provide	O
communication	O
between	O
domain	B-Protocol
name	I-Protocol
registries	I-Protocol
and	O
domain	B-Application
name	I-Application
registrars	I-Application
.	O
</s>
<s>
These	O
transactions	O
are	O
required	O
whenever	O
a	O
domain	O
name	O
is	O
registered	O
or	O
renewed	O
,	O
thereby	O
also	O
preventing	O
domain	B-Protocol
hijacking	I-Protocol
.	O
</s>
<s>
EPP	O
is	O
based	O
on	O
XML	B-Protocol
-	O
a	O
structured	O
,	O
text-based	O
format	O
.	O
</s>
<s>
The	O
underlying	O
network	O
transport	O
is	O
not	O
fixed	O
,	O
although	O
the	O
only	O
currently	O
specified	O
method	O
is	O
over	O
TCP	B-Protocol
.	O
</s>
<s>
The	O
protocol	O
has	O
been	O
designed	O
with	O
the	O
flexibility	O
to	O
allow	O
it	O
to	O
use	O
other	O
transports	O
such	O
as	O
BEEP	B-Protocol
,	O
SMTP	B-Protocol
,	O
SOAP	B-Application
or	O
HTTPS	B-Protocol
.	O
</s>
<s>
However	O
only	O
HTTPS	B-Protocol
has	O
seen	O
some	O
usage	O
while	O
the	O
vast	O
majority	O
uses	O
TCP	B-Protocol
.	O
</s>
<s>
The	O
first	O
protocol	O
drafts	O
were	O
published	O
as	O
IETF	O
individual	O
submission	O
Internet	O
Draft	O
documents	O
by	O
Scott	O
Hollenbeck	O
of	O
Verisign	B-Application
in	O
November	O
2000	O
.	O
</s>
<s>
The	O
protocol	O
has	O
been	O
adopted	O
by	O
a	O
number	O
of	O
ccTLD	O
domain	B-Protocol
name	I-Protocol
registries	I-Protocol
,	O
such	O
as	O
:	O
.ac	B-General_Concept
,	O
.ag	O
,	O
.ai	O
,	O
.as	B-Library
,	O
.ar	O
,	O
.at	B-General_Concept
,	O
.au	O
,	O
.be	B-General_Concept
,	O
.br	O
,	O
.bz	O
,	O
.ca	B-General_Concept
,	O
.cat	O
,	O
.cc	B-Application
,	O
.ch	B-General_Concept
,	O
.cl	O
,	O
.cn	O
,	O
.co	B-Application
,	O
.cr	O
,	O
.cx	O
,	O
.cz	B-General_Concept
,	O
.dk	B-General_Concept
,	O
.dm	O
,	O
.ee	B-General_Concept
,	O
.es	B-General_Concept
(	O
over	O
HTTPS	B-Protocol
)	O
,	O
.eu	O
,	O
.fi	B-General_Concept
,	O
.fm	B-Protocol
,	O
.fr	B-General_Concept
,	O
.gg	B-General_Concept
,	O
.gr	B-General_Concept
(	O
over	O
HTTPS	B-Protocol
)	O
,	O
.gs	O
,	O
.hn	O
,	O
.ht	O
,	O
.il	B-General_Concept
,	O
.im	B-General_Concept
,	O
.in	O
,	O
.io	B-General_Concept
,	O
.it	B-General_Concept
(	O
over	O
HTTPS	B-Protocol
)	O
,	O
.je	B-General_Concept
,	O
.ke	O
,	O
.ki	O
,	O
.ky	O
,	O
.kz	O
,	O
.la	O
,	O
.lc	O
,	O
.li	B-General_Concept
,	O
.lt	B-General_Concept
,	O
.lu	B-Language
,	O
.lv	B-General_Concept
,	O
.md	O
,	O
.me	B-Application
,	O
.mk	B-General_Concept
,	O
.mn	O
,	O
.ms	O
,	O
.mu	O
,	O
.mx	O
,	O
.na	O
,	O
.nf	O
,	O
.ng	O
,	O
.nl	B-General_Concept
,	O
.no	B-General_Concept
,	O
.nu	O
,	O
.nz	B-General_Concept
(	O
EPP	B-Protocol
codes	I-Protocol
referred	O
to	O
as	O
UDAIs	B-Protocol
)	O
,	O
.pe	O
,	O
.pk	O
,	O
.pl	B-General_Concept
(	O
over	O
HTTPS	B-Protocol
)	O
,	O
.ps	B-General_Concept
,	O
.pt	B-Language
,	O
.ru	B-General_Concept
,	O
.ro	B-General_Concept
,	O
.sc	O
,	O
.se	B-General_Concept
,	O
.sh	B-General_Concept
,	O
.si	B-General_Concept
,	O
.su	O
,	O
.tl	O
,	O
.tm	O
.tv	B-Protocol
,	O
.tw	O
,	O
.ua	B-General_Concept
,	O
.uk	B-Application
,	O
.us	B-General_Concept
,	O
.vc	O
,	O
.ve	O
and	O
.za	O
as	O
well	O
as	O
ENUM	B-Language
registries	O
such	O
as	O
those	O
operating	O
the	O
+31	O
,	O
+41	O
,	O
+43	O
,	O
+44	O
and	O
+48	O
country	O
codes	O
.	O
</s>
<s>
ICANN	B-Application
has	O
made	O
it	O
a	O
condition	O
in	O
their	O
base	O
registry	O
contract	O
to	O
offer	O
an	O
EPP	O
service	O
,	O
therefore	O
every	O
gTLD	O
has	O
adopted	O
the	O
protocol	O
.	O
</s>
<s>
There	O
are	O
multiple	O
open	B-License
source	I-License
implementations	O
of	O
EPP	O
server	O
software	O
.	O
</s>
<s>
Another	O
open	B-License
source	I-License
software	O
is	O
FRED	O
(	O
maintained	O
by	O
CZ.NIC	B-Protocol
)	O
which	O
counts	O
11	O
ccTLDs	O
as	O
it	O
's	O
users	O
.	O
</s>
<s>
(	O
Message	B-Operating_System
Queue	I-Operating_System
)	O
transferGet	O
the	O
current	O
status	O
of	O
a	O
started	O
object	O
transfer	O
process	O
.	O
</s>
<s>
The	O
authInfo	B-Protocol
pw	I-Protocol
is	O
a	O
secret	O
that	O
is	O
required	O
in	O
the	O
transfer	O
between	O
registrars	O
.	O
</s>
<s>
These	O
include	O
extensions	O
for	O
DNSSEC	B-Protocol
,	O
IDN	B-Language
,	O
premium	O
domain	O
names	O
,	O
domain	O
restoration	O
(	O
RGP	O
)	O
and	O
extensions	O
to	O
handle	O
the	O
launch	O
of	O
new	O
TLDs	O
among	O
other	O
things	O
.	O
</s>
<s>
The	O
response	O
code	O
1001	O
enables	O
offline	O
processing	O
,	O
an	O
example	O
for	O
this	O
can	O
be	O
that	O
a	O
domain	B-Protocol
name	I-Protocol
registry	I-Protocol
wants	O
to	O
validate	O
a	O
registrant	O
before	O
the	O
domain	O
is	O
registered	O
.	O
</s>
<s>
The	O
client	O
status	O
codes	O
are	O
commonly	O
used	O
to	O
also	O
handle	O
abuse	O
cases	O
,	O
non-payment	O
,	O
invalid	O
contact	O
data	O
or	O
for	O
a	O
Registrar-Lock	B-Protocol
feature	O
.	O
</s>
<s>
autoRenewPeriod	O
This	O
grace	O
period	O
is	O
provided	O
after	O
a	O
domain	B-Protocol
name	I-Protocol
registration	I-Protocol
period	O
expires	O
and	O
is	O
extended	O
(	O
renewed	O
)	O
automatically	O
by	O
the	O
registry	O
.	O
</s>
<s>
Your	O
domain	O
is	O
not	O
activated	O
in	O
the	O
DNS	B-Application
and	O
will	O
not	O
resolve	O
.	O
</s>
<s>
If	O
your	O
registrar	O
fails	O
to	O
provide	O
documentation	O
to	O
the	O
registry	B-Protocol
operator	I-Protocol
within	O
a	O
set	O
time	O
period	O
to	O
confirm	O
the	O
restoration	O
request	O
,	O
the	O
domain	O
will	O
revert	O
to	O
redemptionPeriod	O
status	O
.	O
</s>
<s>
renewPeriod	O
This	O
grace	O
period	O
is	O
provided	O
after	O
a	O
domain	B-Protocol
name	I-Protocol
registration	I-Protocol
period	O
is	O
explicitly	O
extended	O
(	O
renewed	O
)	O
by	O
the	O
registrar	O
.	O
</s>
<s>
If	O
your	O
domain	O
does	O
not	O
have	O
any	O
issues	O
,	O
and	O
you	O
simply	O
want	O
to	O
delete	O
it	O
,	O
you	O
must	O
first	O
contact	O
your	O
registrar	O
and	O
request	O
that	O
they	O
work	O
with	O
the	O
Registry	B-Protocol
Operator	I-Protocol
to	O
remove	O
this	O
status	O
code	O
.	O
</s>
<s>
Alternatively	O
,	O
some	O
Registry	B-Protocol
Operators	I-Protocol
offer	O
a	O
Registry	O
Lock	O
Service	O
that	O
allows	O
registrants	O
,	O
through	O
their	O
registrars	O
to	O
set	O
this	O
status	O
as	O
an	O
extra	O
protection	O
against	O
unauthorized	O
deletions	O
.	O
</s>
<s>
serverHold	O
This	O
status	O
code	O
is	O
set	O
by	O
your	O
domain	O
's	O
Registry	B-Protocol
Operator	I-Protocol
.	O
</s>
<s>
Your	O
domain	O
is	O
not	O
activated	O
in	O
the	O
DNS	B-Application
.	O
</s>
<s>
If	O
your	O
domain	O
does	O
not	O
have	O
any	O
issues	O
,	O
but	O
you	O
need	O
it	O
to	O
resolve	O
in	O
the	O
DNS	B-Application
,	O
you	O
must	O
first	O
contact	O
your	O
registrar	O
in	O
order	O
to	O
provide	O
the	O
necessary	O
delegation	O
information	O
.	O
</s>
<s>
serverRenewProhibited	O
This	O
status	O
code	O
indicates	O
your	O
domain	O
's	O
Registry	B-Protocol
Operator	I-Protocol
will	O
not	O
allow	O
your	O
registrar	O
to	O
renew	O
your	O
domain	O
.	O
</s>
<s>
If	O
your	O
domain	O
does	O
not	O
have	O
any	O
issues	O
,	O
and	O
you	O
simply	O
want	O
to	O
renew	O
it	O
,	O
you	O
must	O
first	O
contact	O
your	O
registrar	O
and	O
request	O
that	O
they	O
work	O
with	O
the	O
Registry	B-Protocol
Operator	I-Protocol
to	O
remove	O
this	O
status	O
code	O
.	O
</s>
<s>
If	O
your	O
domain	O
does	O
not	O
have	O
any	O
issues	O
,	O
and	O
you	O
simply	O
want	O
to	O
transfer	O
it	O
to	O
another	O
registrar	O
,	O
you	O
must	O
first	O
contact	O
your	O
registrar	O
and	O
request	O
that	O
they	O
work	O
with	O
the	O
Registry	B-Protocol
Operator	I-Protocol
to	O
remove	O
this	O
status	O
code	O
.	O
</s>
<s>
Alternatively	O
,	O
some	O
Registry	B-Protocol
Operators	I-Protocol
offer	O
a	O
Registry	O
Lock	O
Service	O
that	O
allows	O
registrants	O
,	O
through	O
their	O
registrars	O
to	O
set	O
this	O
status	O
as	O
an	O
extra	O
protection	O
against	O
unauthorized	O
transfers	O
.	O
</s>
<s>
If	O
your	O
domain	O
does	O
not	O
have	O
any	O
issues	O
,	O
and	O
you	O
simply	O
want	O
to	O
update	O
it	O
,	O
you	O
must	O
first	O
contact	O
your	O
registrar	O
and	O
request	O
that	O
they	O
work	O
with	O
the	O
Registry	B-Protocol
Operator	I-Protocol
to	O
remove	O
this	O
status	O
code	O
.	O
</s>
<s>
Alternatively	O
,	O
some	O
Registry	B-Protocol
Operators	I-Protocol
offer	O
a	O
Registry	O
Lock	O
Service	O
that	O
allows	O
registrants	O
,	O
through	O
their	O
registrars	O
to	O
set	O
this	O
status	O
as	O
an	O
extra	O
protection	O
against	O
unauthorized	O
updates	O
.	O
</s>
<s>
This	O
status	O
indicates	O
that	O
it	O
is	O
not	O
possible	O
to	O
delete	O
the	O
domain	B-Protocol
name	I-Protocol
registration	I-Protocol
,	O
which	O
can	O
prevent	O
unauthorized	O
deletions	O
resulting	O
from	O
hijacking	O
and/or	O
fraud	O
.	O
</s>
<s>
clientHold	O
This	O
status	O
code	O
tells	O
your	O
domain	O
's	O
registry	O
to	O
not	O
activate	O
your	O
domain	O
in	O
the	O
DNS	B-Application
and	O
as	O
a	O
consequence	O
,	O
it	O
will	O
not	O
resolve	O
.	O
</s>
<s>
This	O
status	O
indicates	O
that	O
it	O
is	O
not	O
possible	O
to	O
transfer	O
the	O
domain	B-Protocol
name	I-Protocol
registration	I-Protocol
,	O
which	O
will	O
help	O
prevent	O
unauthorized	O
transfers	O
resulting	O
from	O
hijacking	O
and/or	O
fraud	O
.	O
</s>
<s>
Connections	O
over	O
TCP	B-Protocol
therefore	O
must	O
use	O
TLS	B-Protocol
and	O
use	O
of	O
client	O
certificates	O
as	O
well	O
as	O
correct	O
identity	O
confirmation	O
of	O
the	O
client	O
and	O
server	O
is	O
strongly	O
encouraged	O
.	O
</s>
<s>
Additionally	O
a	O
lot	O
of	O
domain	B-Protocol
name	I-Protocol
registries	I-Protocol
offer	O
to	O
set	O
up	O
a	O
IP	O
whitelist	O
for	O
connecting	O
to	O
their	O
EPP	O
servers	O
.	O
</s>
<s>
,	O
Domain	B-Protocol
Registry	I-Protocol
Grace	O
Period	O
Mapping	O
(	O
e.g.	O
</s>
