Free Dynamic DNS Service

 FAQ
Free Dynamic DNS

Reach your home, office, or lab network even when your IP changes.

DNSExit Dynamic DNS points a hostname on your domain to your current public IP address. Use it for self-hosted websites, VPN access, remote desktop, cameras, NAS devices, home labs, and small office networks.

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100% free plan Use your own domain Router or script updates DNS API available
1Your IP changes
2DNSExit updates DNS
3Your hostname still works

Example: home.yourdomain.com

Your hostname follows your changing public IP, so you do not have to remember numbers or manually edit DNS records.

Self-host services

Run a website, app, game server, NAS, or home lab service from an internet connection with a changing IP.

Remote access

Connect to VPN, remote desktop, cameras, DVRs, or office equipment with a hostname you can remember.

Router-friendly setup

Use a router DDNS client when available, or run a lightweight update script on Windows, Mac, Linux, NAS, or server.


Note: DNSExit does not provide static IP addresses. Dynamic DNS keeps a hostname pointed to your current public IP address so you can reach your network even when the IP changes.

Update Dynamic DNS in 3 Simple Steps
Keep your hostname pointed to your current IP address by choosing the easiest update method for your setup.
New to Dynamic DNS? Start here: create a free account, add your hostname, then copy your update command or router URL.
Step 1

Create a free account

Create your DNS Exit account so you can manage your hostnames and generate update commands.

Step 2

Add your hostname

After you sign in, add the hostname you want to keep updated, then open the Dynamic IP Update page to generate your command.

Step 3

Use router, client, or script

After setup, use your update URL in a router, DDNS client, or scheduled task.

https://api.dnsexit.com/dns/ud/?apikey=API-Key&host=host.domain.com


Manual API and cURL Updates
If you prefer a command line or custom integration, use the update URL below. DNS Exit will detect your public IP automatically unless you pass the optional ip parameter.
curl https://api.dnsexit.com/dns/ud/?apikey=API-Key -d host=hostname1,hostname2
Note: Simply add the parameter -d ip=xx.xx.xx.xx to override the updated IP(IPv4 or IPv6). Please make sure your update interval is more than 4 minutes.
For multiple hosts, separate the hostnames with commas. The API Key can be created at your account Dashboard -> Settings
To test the update URL in a browser, open:
https://api.dnsexit.com/dns/ud/?apikey=API-Key&host=host.domain.com
Note: You need to replace the API-KEY and hostname with your own api key and hostname
The return is JSON file with a successfull update like:

{"code" : 0, "message" : "Success - some details about the update"}

code:0 indicates successfull updates while code:1 indicates IP address not changed. Other returning codes indicates errors.

curl (short for "Client URL") is a command line tool that can communicates with a web server with a relevant URL. Or in other words, it is just like a text based web browser. The curl command is built in most Operating Systems including Linux, Unix, MacOS, and Windows (sinc Windows 10 ). If your windows does not have curl command, you can refer to install curl on windows to learn how to install it.


How Dynamic DNS Keeps You Reachable




Dynamic DNS maps a hostname to your current public IP address. When your ISP changes the IP, your router, update client, or script sends the new address to DNSExit so your hostname continues to reach the right network.

Tip: Besides the easy-to-use web interface to manage your DNS, we also provide DNS API Document to update DNS records remotely.

how dynamic DNS works





How to Start your Dynamic DNS ?

1.    Sign up an account

First you need to Sign Up a free account to create DNS for your domains and updating your IP addresses by IP Update clients.


2.    Register a new or use an existing domain name for dynamic DNS

a) If already got a domain name, you can skip this step. However, you do need to change the name servers of the domain to our name servers so that our name servers are in charge of resolving IPs for your domain.

b) To start with your dynamic DNS experience, you may simply use our Free Domains.

c) You want to choose your own domain name for your dynamic DNS, you can find an available domain name and registere it.


3.    Create DNS for the Domain

Now the domain has been registered or you have switched your existing domain's name servers to our name servers:

ns1.dnsExit.com ns2.dnsExit.com ns3.dnsExit.com ns4.dnsExit.com

Next, you need to Setup DNS for the domain. The DNS (Domain Name Systems) is the internet service that translates your domain names into IP addresses.


4.    Automatic Dynamic IP Updates

Now you need to keep your hostname's IP address updated automatically. There are two ways to do this:


Option A: Your Router

Most routers have a built-in DDNS client. We show you exactly what to enter for your router brand.

Setup Router DDNS

Option B: Curl / Script

Run a curl command or script on a PC, NAS, or server inside your network. Works on Windows, Mac, and Linux.

IP Update Clients

Verify it works: On Windows, Mac, or Linux, open a terminal and run:

nslookup hostname.yourdomain.com ns1.dnsexit.com

The returned IP should match your router's public/WAN IP address.
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Need Dynamic DNS help?
See setup and troubleshooting answers in our DNS FAQ.
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