# Io Reference

Networking / Socket / DNS

|  | Utility methods related to Domain Name Service lookups.
|  | dnsQueryPacketForHostName(hostNameSeq) Assembles a DNS query packet for the given host name and returns it in a Sequence. hostNameAndIPforDNSResponsePacket(dnsResponsePacketSeq) Dissasembles the given dnsResponsePacketSeq and returns a list object containing the hostName and IP or an error string on error. localNameServersIPs Returns a list of local name server IPs as a list of Sequences. Works on OSX, Unix, Windows.