.CZ is the official country code Top-Level-Domain (ccTLD) of Czech Republic. The offered second level domains may be used by any company or private person.

• Registry
• Periods
• API
• TLD specific
• Addons
• RegistrarOC

TLD	.cz
Registry	CZ.NIC
Dispute Policy	Rules
Registrar	1api GmbH
WHOIS-Server	whois.nic.cz
WHOIS-Update	Real-Time
Min. Characters	1
Max. Characters	63
Character Set	Letters and numbers Hyphens ("-"), however not at the beginning or directly in front of the TLD IDN: not allowed
Limitations	Registrant Contacts: Required: 1 / Maximum: 1 Admin Contacts: Required: 1 / Maximum: 1 Tech Contacts: Required: 1 / Maximum: 10 Billing Contacts: Required: 0 / Maximum: 1
{{{Possible Extensions}}}
IDN capable	No
Restore capable	No
Handle Updates	Supported
Registration System	Real-Time
Allowed number of NS	2 to 10
Registry Nameservercheck	No
Host IP-Addresses Type	IPv4 / IPv6
Hosts managed as	Attribute
Root Nameserver Update	several times a day
SEC DNS Interface	not available
Transferclass	Pull
Transfer Periods	0Y
Transfer Authcode required	Yes
Transfer Real-Time	Yes
Transfer Lock	Yes
Transfer Confirmation (Request / Approve)	- / -
Owner Change by	Update

{{{Possible Extensions}}}
Registration Periods	1-10 years
Add Grace Period	0 days
Accounting Period	-1 week
Finalization Period	-1 day
Failure Period	59 days
Payment Period	-61 days
Deletion Restorable Period	0 days
Deletion Hold Period	0 days
Explicit Renewals	Yes
Renewal Periods	1-9 years

Domain Registration

Domains can be registered in Real-Time with the API AddDomain command.

command = AddDomain
domain  = (DOMAIN)

REQUIRED

ownercontact0 = (CONTACT)
admincontact0 = (CONTACT)
techcontact0 = (CONTACT)
billingcontact0 = (CONTACT)
nameserver0 = (NAMESERVER)
nameserver1 = (NAMESERVER)

OPTIONAL

auth = <TEXT> | <NULL>
transferlock = 0 | 1 | <NULL>
subuser = <TEXT> | <NULL>

Domain Transfer

The transfer has to be initiated by the gaining registrar and can be requested with the API TransferDomain command.
A valid Authorization Code must be provided to initiate a transfer successfully. You may obtain the authorization code from the losing registrar.
Domain transfers are processed in Real-Time.

command = TransferDomain
domain = (DOMAIN)

REQUIRED

action = REQUEST | APPROVE | DENY | CANCEL | USERTRANSFER
auth = <TEXT>

OPTIONAL

order = CREATE | REPLACE | UPDATE

subuser = <TEXT> | <NULL>
period = <PERIOD>
transferlock = 0 | 1 | <NULL>

Delete Domain

Domains can be deleted with the API DeleteDomain command.
There is no Deletion Restorable Period and no Deletion Hold Period. Deleted domain names will be available for new registrations immediately.
A domain is cancelled instantly after deletion. There are no protection periods. The domain is available for new registration immediately.

command = DeleteDomain
domain = (DOMAIN)

REQUIRED

n/a

Restore Domain

Restores are not possible.

command = RestoreDomain
domain = (DOMAIN)

REQUIRED

n/a

OPTIONAL

renewalmode = <NULL> | <TEXT>
subuser = <TEXT>

Ownerchange

An Ownerchange is free of charge and can be done with the API ModifyDomain command.

There are no specific parameters available

No special procedures.