.CZ

Name: .CZ — TLD Knowledge Base
Creator: CZ.NIC

Czech Republic

CZ.NIC · ccTLD · Updated 2026-09-10

OpenIDNDNSSEC

Specifications

Zone: .cz
Registration: Real-time
Registration period: 1 year
Character length: 1-63
DNSSEC: Yes
IPv6: Yes
Nameservers: 2-7 nameservers
Renewal on transfer: Yes
Transfer time: 24 hours
Auth code format: Standard EPP
Redemption period: None
Handle updates: Yes
WHOIS update: Real-time
WHOIS server: whois.nic.cz
Connection: Direct
Data set: ccTLD
Auth code: Yes

Eligibility & Restrictions

Open to anyone worldwide — individuals, foreign entities, legal persons. No residency requirement. No maximum on number of domains.

Registration

1 year minimum. Transfer includes 1-year renewal.

Transfer Procedure

Auth code from registrar or directly from nic.cz/whois/send-password/ (sent to registrant and admin contacts). Auth code valid 14 days. Transfer completes within 24 hours. To generate auth code at registry: remove transfer lock — registry automatically emails registrant with new code.

📘 ICANN Transfer Policy (IRTP) — See ICANN Transfer Policy for the full IRTP framework, auth code rules, 60-day lock periods, and TEAC.

Registrant Change

Owner change (trade) free of charge via ModifyDomain command. Registrant change done in real-time.

📘 ICANN OwnerChange (COR) — See ICANN OwnerChange for COR triggers, FOA/DA modes, 60-day lock, and opt-out.

Renewal & Deletion

Standard renewal. 60-day post-expiry protection: first 30 days domain still resolves; day 31-60 excluded from DNS zone but not yet available for registration.

📘 ICANN ERRP — See ICANN ERRP for the standard gTLD expiry lifecycle (Auto-Renew Grace → RGP → Pending Delete → Released).

Restore / Redemption Grace Period

NO redemption period. Deleted domains available for re-registration immediately. No restore possible.

No redemption period. Once deleted, the domain is immediately available for re-registration by anyone. This is a critical difference from most TLDs. The 60-day protection only applies to expiry, not explicit deletion.

📘 ICANN ERRP — See ICANN ERRP for RGP details and standard restore fees.

WHOIS / Privacy

For organisations: name and address shown. For individuals: address can be hidden on request. Standard WHOIS service.

📘 ICANN Registration Data Policy — See Registration Data Policy for RDP 2025, RDAP, redaction defaults, and privacy/proxy rules.

NIS2 Compliance

No .CZ-specific NIS2 implementation documented beyond standard EU obligations.

📘 NIS2 Compliance — See NIS2 Compliance for Article 28 requirements, registry implementation status, and operational impact.

Known Error Codes & Notes

No redemption: No RGP. Once deleted, domain immediately available for re-registration. 60-day protection only applies to expiry, not explicit deletion.
DNS zone check: Tool available at zonemaster.nic.cz for pre-registration nameserver validation.

Data controllers

CZ.NIC, z.s.p.o (org) Milesovska 5, Prague 130 00, Czechia
CZ.NIC, z.s.p.o. — Ondrej Filip (admin) Milesovska 5, Prague 130 00, Czechia

Error codes

EF00803
EF01017
EF03008
EF00512
EF01008
EF01009
EF03005
EF01002
EF03007
EF03006
EF02066
EF01075
EF03011
EF01010
EF01055
EF03010
EF01074
EF0103118
EF011316

Further information

Zone Check: https://zonemaster.nic.cz

Required fields

ownerc/email
zonec/email
adminc/email

Restrictions

Nameserver must be set up in advance and provide an authoritative response.
Domains can be registered without restrictions.

Root nameservers

A.NS.NIC.CZ
D.NS.NIC.CZ
B.NS.NIC.CZ
C.NS.NIC.CZ

Tasks (API)

create · available · chargeable · automatic
authinfo2 · available · automatic
authinfoCreate · available · automatic
renew · available · chargeable · automatic
delete · available · automatic
update · available · automatic
transfer · available · chargeable · automatic · AuthInfo required
preack · available · automatic

API

Domain Create

POST https://api.autodns.com/v1/domain

{
  "name": "example.cz",
  "ownerc": {
    "id": 23142212
  },
  "adminc": {
    "id": 23142212
  },
  "techc": {
    "id": 23142212
  },
  "nameServers": [
    {
      "name": "ns1.example.com"
    },
    {
      "name": "ns2.example.com"
    }
  ],
  "confirmOrder": false
}

Domain Transfer

POST https://api.autodns.com/v1/domain/_transfer

{
  "name": "example.cz",
  "auth": "(AUTH_CODE)"
}

Create AuthInfo1

POST https://api.autodns.com/v1/domain/example.cz/_authinfo1

Standard EPP auth code.

Domain Restore

POST https://api.autodns.com/v1/domain/example.cz/_restore