Records you will set
Your DNS host stores a list of records for the domain. Each one says "this name means that". Five types cover almost everything.
| Type | Says | Example |
|---|---|---|
| A | name → IPv4 address | mycafe.com → 203.0.113.10 |
| AAAA | name → IPv6 address | mycafe.com → 2001:db8::10 |
| CNAME | name → another name | www.mycafe.com → mycafe.example.net |
| TXT | free text, often to prove ownership | _verify → abc123 |
| MX | where the domain's mail goes | mycafe.com → mail.example.net |
$ dig +short A mycafe.com 203.0.113.10 $ dig +short CNAME www.mycafe.com mycafe.example.net. $ dig +short TXT _verify.mycafe.com "abc123"
A root domain like mycafe.com cannot hold a CNAME, so use a subdomain such as www.mycafe.com. That is a rule of DNS, not of one host. An A record, or an ALIAS record at hosts that offer it, covers the root.
Why a change takes time
Every record has a TTL, a number of seconds that resolvers may keep the answer. After you edit a record, resolvers that cached the old one keep serving it until their TTL runs out. This is what people call propagation. Nothing spreads; old copies expire.
Before a move, lower the TTL a day ahead. After the move, raise it again. Run dig to see what the world sees now, not what your registrar's page says.
Do you need your own domain?
Get a domain when
- Customers will type your name. A shop, a studio, a product.
- You want email at your name.
[email protected]needs MX records. - You may change hosts. The name stays yours; only the records move.
Skip it when
- It is a draft or a test. A free address from the host is enough.
- A bot has no web page. Nobody types its address.
Domains in Uno
A site you publish starts at a free address on uno4.me. A site on your own name: add a CNAME record from your subdomain to your site's uno4.me address, then connect it on the site's Custom domain tab. An app on a computer: to use your own domain you add two records at your registrar: a TXT record that proves you own it and a CNAME to cname.uno4.dev; after the records are visible, Uno issues the certificate by itself; the API reports the state: pending, issuing, active. On a computer, a root domain can take longer to show up than a www subdomain.
Sites: free
A computer for your domain, from $5 a month
Run the app behind your name. Your agent can register the domain with Uno and watch the certificate until it is active.
Small
A Telegram bot, a VPN, a small backend
$5/ month
- 1 vCPU · 1 GB
- 15 GB disk
- 25 GB cloud storage
- 5 boosts a month
Plus
Agents that work with your laptop closed
$20/ month
- 4 vCPU · 4 GB
- 40 GB disk
- 100 GB cloud storage
- Uno Work in the cloud
Pro
A product in production, a second MacBook
$70/ month
- 16 vCPU · 16 GB
- 120 GB disk
- 300 GB cloud storage
- Speed of a MacBook Air M4
Max
A team and many agents at once
$200/ month
- 32 vCPU · 48 GB
- 300 GB disk
- 1,024 GB cloud storage
- 5 public IPv4
Add Uno AI to any plan: 40 h of AI work a month on Small, 100 h on Plus, unlimited on Max. Today: GLM-5.3 Flash and MiMo v2.6 Pro. Or sign in with your own Claude or ChatGPT.
Questions
Is a domain the same as hosting?
Who runs my DNS?
Why does my site work for me but not for a friend?
dig against a public resolver.