Robtex

Up: 164.128.0.0/15
Can't show all results, try to descend to a more specific CIDR
Down left: 164.129.0.0/17
Down right: 164.129.128.0/17

IP	Type	Hostname
164.129.0.34	A+PTR	alpha.dmz-test.st.com
164.129.0.36	A	gamma.dmz-test.st.com
164.129.1.34	A+PTR	alpha.dmz-eu.st.com
164.129.1.35	A	beta.dmz-eu.st.com
164.129.1.36	A+PTR	gamma.dmz-eu.st.com
164.129.1.36	A	ftp.st.com
164.129.1.37	PTR	delta.dmz-eu.st.com
164.129.80.219	A+PTR	stguest.st.com