DNS is the internet's address book: it turns your domain into the server that answers for it. To stay fast, the networks between you and that book keep a copy of each answer for a while, called its TTL (time to live).
What that means for a change
- A record we add or edit in your Domains tab is live at the source straight away. Networks that already had the old answer keep it until its TTL runs out: 1 hour for the records we create, unless a record says otherwise.
- So for a while some visitors see the new answer and some the old one. A phone on mobile data and a laptop on office Wi-Fi often ask different networks, which is why they can disagree.
- Changing a domain's nameservers (moving the whole address book) is slower: the registries publish those with long TTLs, and it can take up to a day or two to be seen everywhere.
If you are testing
- Try from a phone on mobile data, or a private browser window, rather than refreshing the same tab.
- Wait at least the TTL before changing the same record again: two quick edits make the result harder to read, not faster.
- If something is still wrong after a day, write to us from the Support tab with what you see; we check it from our side.
Still stuck? Write to us: a person reads every message.