ANM's server will be audited every year and if individual advertising clients wish to have specific campaigns audited, the group says it will arrange this for them on a case-by-case basis.
ANM chief operating officer Mark Milner said: "One of the unique qualities of digital media is that it is much easier to track and measure. We believe in giving clear information to our advertisers and partners."
He said that by auditing its ad serving capabilities, it was sending out a positive message ANM is "transparent in all of our operations".
ANM said that as targeting becomes more sophisticated, auditing will become an increasingly important part of a campaign.
ANM, which launched in 1995, publishes the , , and .
ANM is working with ABC Electronic to audit its ad server.
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