`dnsResolveEx()`

Microsoft IPv6 extension. Returns a semicolon-separated list of IPv4 and IPv6 addresses, or an empty string.

dnsResolveEx(host)  →  string

Only available in engines that implement the Microsoft “Ex” extensions. Firefox does not, so a PAC that calls it there fails with a ReferenceError.

Example

var ips = dnsResolveEx(host);

Derived from each engine's vendored helper library plus its native bindings (see engines).
Function	chromium <=51	chromium >=52	firefox all	pacparser <=1.4.6	pacparser 1.5.0	pacparser >=1.5.1	reference all
`dnsResolveEx`	yes	yes	no	yes	yes	yes	no