Managing DNS records

DNS records tell the internet where your subdomain points. certed.one gives you direct control over the record types you need most.

Supported record types

• A — points a name to an IPv4 address, e.g. 203.0.113.7.
• AAAA — points a name to an IPv6 address.
• CNAME — aliases your name to another hostname, e.g. myapp.vercel.app.
• TXT — stores text, commonly used for domain verification and email policies.

Hosts

Each record has a host within your subdomain. Use @ for the subdomain root (e.g. blog.certed.one) or a name like www to create www.blog.certed.one.

TTL

TTL (time to live) controls how long resolvers cache a record, in seconds. A lower TTL propagates changes faster; a higher TTL reduces lookups. When in doubt, the default is a sensible balance.

Common setups

Point to a server

Add an A record with host @ and your server's IPv4 address.

Point to a hosting provider

Add a CNAME record with host @ (or www) and the hostname your provider gives you.

Verify ownership

Add a TXT record with the value supplied by the service you are verifying with.

Propagation

DNS changes are not always instant — resolvers may cache old values until the TTL expires. If a change doesn't appear immediately, wait and try again. You can manage records any time from the Manage DNS page of your subdomain.

Still have questions? Read the FAQ or create a free account to get started.