The lookup path.
WHAT A RESOLVER IS
The service your device asks when it needs to resolve a name.
WHERE YOURS COMES FROM
Usually your connection provider, assigned automatically.
Or one you configured deliberately.
WHAT A RESOLVER DOES
Answers from its cache if it can Otherwise performs the full lookup and caches the result
WHY DIFFERENT RESOLVERS GIVE DIFFERENT ANSWERS
They cache independently.
One may hold an old answer while another has the current one.
WHAT THAT EXPLAINS
A site working for one person and not another after a change.
HOW TO TEST WITH A DIFFERENT RESOLVER
Query a public resolver directly, using a lookup tool.
WHY THAT HELPS
It tells you what the answer is outside your own caching.
WHAT TO DO IF YOUR RESOLVER IS SLOW OR UNRELIABLE
Configure a reputable public resolver on your router.
WHAT THAT AFFECTS
Every device on the network.
WHAT NOT TO USE
Resolvers of unknown origin, which can redirect you.
