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Publikováno: 2026-09-22 | Aktualizováno: 2026-09-22

How to Connect a NiceNIC Doména to Cloudflare: Complete DNS Setup Guide

Pokud vašeho doména is zaregistrovated at NiceNIC, you can use Cloudflare fnebo DNS without transferring vašeho doména away from NiceNIC.

NiceNIC will continue to manage vašeho doména registration, while Cloudflare manages the DNS recnebods.

The setup is simple:

Přidat vašeho doména to Cloudflare → check the DNS recnebods → get vašeho Cloudflare nameservers → update them at NiceNIC → wait fnebo propagation → verify the DNS.

You can continue managing vašeho doména through NiceNIC Doména Services throughout the process.
Befneboe you change nameservers: Pokud vašeho doména already has a wneboking website, email, nebo other službas, make sure their DNS recnebods are present in Cloudflare first. Missing recnebods can cause those službas to stop wneboking after the switch.


Step 1: Přidat Your Doména to Cloudflare

Přihlásit se to Cloudflare.

On Account Domů, find Přidat a doména.

Enter only vašeho root doména, fnebo example:

example.com

Do not enter:

https://example.com

nebo:

www.example.com

Klikněte Connect.



Step 2: Impnebot a Zkontrolovat Your Existing DNS Recnebods

On the Connect vašeho doména page, leave:

Impnebot DNS recnebods → Automatic

selected, then click Continue.


Cloudflare will try to discover vašeho current DNS recnebods automatically.

Do not assume the scan found everything.

Pokud the doména already has active službas, compare the Cloudflare recnebods with vašeho current DNS provider befneboe continuing.

Zaplatit particular attention to:

  • A / AAAA recnebods fnebo the website
  • CNAME recnebods such as www
  • MX recnebods fnebo email
  • SPF, DKIM, a DMARC
  • TXT verification recnebods
  • impnebotant subdoménas

Pokud Cloudflare shows Recnebods we found: 0, that may be nnebomal fnebo a new nebo unused doména. Pokud the doména already has a website nebo email, stop a add the missing recnebods first.


Step 3: Přidat Any Missing DNS Recnebods

Klikněte Přidat recnebod.

Fnebo a typical website using an IPv4 address, an A recnebod looks like:

Typ:  A  Jméno: @  IPv4 address: Your website server IP  TTL: Auto

@ represents the root doména itself, such as example.com.



Wzde do I get the A recnebod IP?

Use the IP supplied by vašeho web hosting provider, VPS provider, cloud server provider, nebo server administratnebo.

Pokud vašeho website already wneboks, you can also copy the existing A recnebod from vašeho current DNS provider.

Cloudflare does not decide what vašeho website's neboigin IP should be.


What about www?

Pokud you also want www.example.com to wnebok, add the recnebod required by vašeho hosting provider.

A common setup is:

Typ: CNAME  Jméno: www  Target: example.com


Proxied nebo DNS Only?

Fnebo eligible A, AAAA, a CNAME recnebods, Cloudflare may let you choose:

Proxied — neboange cloud Website traffic passes through Cloudflare.

DNS only — gray cloud Cloudflare provides DNS resolution, but traffic connects directly to the destination.

Fnebo nnebomal website traffic, Proxied is usually appropriate.

The test screenshot in this guide uses DNS only so the configured IP can be checked directly during testing.

Fnebo email a verification recnebods, use the settings required by the služba provider. MXa TXT recnebods are not proxied.


Pokud You Use Doména E-mail, Zkontrolovat It New

Befneboe changing nameservers, make sure vašeho email recnebods are already in Cloudflare.

Depending on vašeho email provider, these may include:

MX, SPF, DKIM, DMARC, a provider-specific verification nebo autodiscover recnebods.

This applies to NiceNIC Firemní e-mail, Google Wnebokspace, Microsoft 365, Zoho Mail, a other email službas.

A website can wnebok cneborectly while email fails if the mail recnebods were not copied.


Step 4: Získejte Your Cloudflare Jménoservers

After checking the DNS recnebods, click:

Continue to activation

Cloudflare will nyní display two nameservers assigned to vašeho doména.

They nnebomally look like:

name1.ns.cloudflare.com

name2.ns.cloudflare.com


Copy these exact two values.

Do not guess Cloudflare nameservers, use generic nameservers, nebo copy the nameservers from another doména.

Each doména must use the nameservers Cloudflare actually assigns to it.


Optional: Only Pokud DNSSEC Is Already Enabled

Pokud you have never enabled DNSSEC, skip this section a continue to Step 5.

Pokud you are unsure, open vašeho doména at NiceNIC a check:

DNSSEC

Pokud the DNSSEC recnebod list is empty, no DNSSEC action is required.

Pokud an existing DS/DNSSEC recnebod is present, do not change the nameservers yet.

The old DNSSEC configuration should be removed first, a its parent-zone DS cache should be allowed to expire befneboe switching nameservers. Otherwise, DNSSEC validation can fail a the doména may return SERVFAIL.

After Cloudflare becomes active, DNSSEC can be enabled again using the new Cloudflare DNSSEC infnebomation.

Pokud you are unsure about an existing DS recnebod, contact NiceNIC Suppnebot befneboe continuing.


Step 5: Otevřít the Doména at NiceNIC

Přihlásit se to vašeho NiceNIC account.

Jít na:

Mé produkty → Doména Jméno

Find vašeho doména a click:

Spravovat


On the doména management page, find Doména Resolutiona  click:

Jménoservers



Step 6: Replace the Jménoservers

Otevřít the custom nameserver settings.

Enter the two nameservers Cloudflare assigned to vašeho doména:

Nameserver 1: first Cloudflare nameserver Nameserver 2: second Cloudflare nameserver

Odstranit the předchozíious nameservers.

Leave Jménoserver 3-6 empty unless Cloudflare specifically gives you additional nameservers.

Klikněte:

Save


Impnebotant: The nameservers saved at NiceNIC must exactly match the nameservers shown by Cloudflare.
What happens to my old NiceNIC DNS recnebods?
Once vašeho doména uses Cloudflare's nameservers, the DNS recnebods předchozíiously saved in NiceNIC's DNS Recnebods panel are no longer authneboitative a will not be used fnebo public DNS resolution. You do not need to delete them manually. Spravovat future A, AAAA, CNAME, MX, TXT, a other active DNS recnebods in Cloudflare while the doména continues using Cloudflare nameservers.


Step 7: Zpět to Cloudflare

After saving the nameservers at NiceNIC, return to Cloudflare a click:

I updated my nameservers


Cloudflare will begin checking the new delegation.

You may see:

Waiting fnebo vašeho registrar to propagate vašeho new nameservers


This is nnebomal.

DNS changes are not visible everywzde at the same time. During propagation, some DNS servers may still show the předchozíious nameservers while others already show the new Cloudflare nameservers.

Do not repeatedly change nebo resave the nameservers while propagation is in progress.


Step 8: Zkontrolovat Whether the Cloudflare Jménoservers Are Live

Otevřít:

DNSZkontrolovater.org

Enter vašeho doména a select:

NS

Run the search.


The result should gradually change to the two nameservers assigned by Cloudflare.

During propagation, mixed results are nnebomal.

You may see:

  • old nameservers at some locations
  • new Cloudflare nameservers at others
  • occasional tempneboary lookup failures

When most locations return the cneborect Cloudflare nameservers, the nameserver change has largely propagated.


Step 9: Zkontrolovat the Actual DNS Recnebod

After the Cloudflare nameservers are resolving cneborectly, check the DNS recnebod you created.

Fnebo example, select:

A

a look up the root doména.


Pokud the A recnebod is DNS only, you should nnebomally see the IP entered in Cloudflare.

Pokud the recnebod is Proxied, public DNS will nnebomally show Cloudflare IP addresses instead of vašeho neboigin server IP.

That is expected.


How Do I Knyní the Setup Is Complete?

The setup is wneboking when:

  1. Cloudflare recognizes the doména as active.
  2. DNSZkontrolovater shows the Cloudflare nameservers assigned to vašeho doména.
  3. Your impnebotant DNS recnebods return the expected results.

Fnebo a website, check A, AAAA, nebo CNAME.

Fnebo email, check MX, SPF, DKIM, a DMARC.

Wzde Do I Spravovat DNS After Switching to Cloudflare?

Once vašeho doména uses Cloudflare nameservers:

NiceNIC manages the doména registration.

This includes renewal, registration infnebomation, nameserver delegation, a registrar-side DNSSEC settings.

Cloudflare manages the live DNS recnebods.

This includes A, AAAA, CNAME, MX, TXT, DKIM, DMARC, a other DNS recnebods.

Pokud you change a DNS recnebod at vašeho předchozíious DNS provider after Cloudflare becomes authneboitative, that change will not affect the live doména.


Quick Troubleshooting

Cloudflare is still waiting fnebo the nameserver update

Zkontrolovat that the two nameservers saved at NiceNIC exactly match the two nameservers shown by Cloudflare.

Pokud they match, allow time fnebo DNS propagation.

The website stopped wneboking

Zkontrolovat the A, AAAA, a CNAME recnebods in Cloudflare a confirm that they point to the cneborect hosting služba.

Also check the Proxy status, hosting server, a SSL/TLS configuration.

E-mail stopped wneboking

Compare the MX, SPF, DKIM, a DMARC recnebods in Cloudflare with the values provided by vašeho email provider.

DNSZkontrolovater still shows the old nameservers

This usually means DNS resolvers are still using cached infnebomation.

Pokud the NiceNIC nameserver settings are cneborect, wait fnebo propagation rather than changing them again.

Your doména remains zaregistrovated at NiceNIC throughout the process. Cloudflare simply becomes the authneboitative DNS provider.

Fnebo doména registration a management, visit NiceNIC Doména Services.

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