1. Mozilla
  2. Add-ons
  3. Browser extensions
  4. JavaScript APIs
  5. dns

dns

Enables an extension to resolve domain names.

To use this API, an extension must request the "dns" permission in its manifest.json file.

Note: DNS will fail with NS_ERROR_UNKNOWN_PROXY_HOST if proxying DNS over socks is enabled.

Functions

dns.resolve()

Resolves the given hostname to a DNS record.

Browser compatibility

Chrome
Edge
Firefox
Opera
Safari
Firefox for Android
Safari on iOS
dns
Chrome – Preview support
Chrome Canary
footnote
footnote The required dns permission is only supported in Chrome Dev.
footnote Preview browser support
Edge – No support
Edge
footnote No support
Firefox – Full support
Firefox 60 (Release date: 2018-05-09)
footnote Full support
Opera – No support
Opera
footnote No support
Safari – No support
Safari
footnote No support
Firefox for Android – Full support
Firefox for Android 60 (Release date: 2018-05-09)
footnote Full support
Safari on iOS – No support
Safari on iOS
footnote No support
resolve
Chrome – Preview support
Chrome Canary
footnote
footnote The required dns permission is only supported in Chrome Dev.
footnote Preview browser support
Edge – No support
Edge
footnote No support
Firefox – Full support
Firefox 60 (Release date: 2018-05-09)
footnote Full support
Opera – No support
Opera
footnote No support
Safari – No support
Safari
footnote No support
Firefox for Android – Full support
Firefox for Android 60 (Release date: 2018-05-09)
footnote Full support
Safari on iOS – No support
Safari on iOS
footnote No support

Tip: you can click/tap on a cell for more information.

Full support
In development. Supported in a pre-release version.
No support
See implementation notes.

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