Update dynamic DNS records with nsupdate.info, a free service that provides a memorable hostname.
myaddr
Create a dynamic DNS subdomain and update it through myaddr.tools HTTP API.
About myaddr
myaddr.tools is a dynamic DNS service that provides a subdomain name and lets the owner update its DNS records through an HTTP API. A name can be claimed in seconds without an account. The claim returns a secret key, and whoever holds that key controls the name. The homepage describes the service as minimalist.
The Update API accepts GET, POST, and PUT requests, with parameters in the query string or in form-encoded or JSON bodies. It can set IPv4 or IPv6 addresses, or use the requester's address, and it supports ACME dns-01 challenges for TLS certificates from certificate authorities such as Let's Encrypt. Each IP address must be updated at least once every 90 days to stay active, and a registration with no updates for 120 days is deleted and its name released. The homepage states that no personal data is collected.
Key features
- Claim a subdomain name in seconds without creating an account
- Update API accepts GET, POST, and PUT requests to /update
- Set IPv4 or IPv6 addresses, or use the requester's IP address
- Serve ACME dns-01 challenge TXT records for TLS certificate validation
- Delete request removes both IPv4 and IPv6 addresses for a name
- Name resolves under myaddr.tools, myaddr.dev, and myaddr.io suffixes
Best for: People who need a stable hostname for a changing IP address and want to update DNS records from scripts or devices using HTTP requests.
Good for
- No account is required to claim a name
- The homepage states there are no ads and no tracking
- The API returns OK with status 200 on success and an error message otherwise
Watch out for
- Losing the secret key means losing control of the name
- Each IP address must be updated at least once every 90 days to remain active
- A name with no updates for 120 days is deleted and released
myaddr at a glance
- Website
- myaddr.tools
- Category
- Development › Network Tools
- Type
- Online tool
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Request a free .is-a.dev subdomain by following the registration steps in the project repository.
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myaddr FAQ
What happens if I lose my secret key?
The secret key gives control over the name. If it is lost, the name is lost.
How often do I need to update my address?
Each IP address (IPv4 and IPv6) must be updated at least once every 90 days to stay active. If no updates are made to a name for 120 days, the registration is deleted and the name is released.
Can I use the service to get TLS certificates?
The service supports ACME dns-01 challenges, which can be used to obtain TLS certificates from certificate authorities such as Let's Encrypt. Challenge TXT records are removed automatically after a few minutes.
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