Google has setup nameservers to use if you would like to point your parked domains to Google Adsense for Domains.

ns1.googleghs.com
ns2.googleghs.com
ns3.googleghs.com
ns4.googleghs.com

However, you can only use one Google product per domain

https://www.google.com/adsense/support/as/bin/answer.py?sourceid=aso&subid=ww-ww-et-asui&medium=link&answer=154197