Part of the com.antiaction package.

See:
Description

Packages

com.antiaction.dns	Core classes for dis/assembling DNS messages, questions and records.
com.antiaction.dns.record	Contains classes used to dis/-assemble the data part of resource records (A,MX,CNAME,..).
com.antiaction.dns.transport	Contains the classes that are used to send/receive DNS messages over the network using either TCP or UDP.

Part of the com.antiaction package.