vertx / io.vertx.kotlin.core.dns / io.vertx.core.dns.DnsClient / reverseLookupAwait

# reverseLookupAwait

`suspend fun DnsClient.reverseLookupAwait(ipaddress: String): String?`

Try to do a reverse lookup of an IP address. This is basically the same as doing trying to resolve a PTR record but allows you to just pass in the IP address and not a valid ptr query string.

### Parameters

`ipaddress` - the IP address to resolve the PTR for

`handler` - the to notify with the . The handler will get notified with the resolved java.lang.String if a record was found. If none was found it will get notified with null. If an error accours it will get failed.

Returna
reference to this, so the API can be used fluently. *