Robtex

Up: 194.26.0.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 194.26.32.0/20
Down right: 194.26.48.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
194.26.32.44	A	helperbad.nl
194.26.32.44	A	meikermis.nl
194.26.32.44	A	ssbg.nl
194.26.51.146	PTR	mail1.groningen.nl
194.26.51.146	A	mx1.groningen.nl
194.26.51.147	PTR	mail2.groningen.nl
194.26.51.147	A	mx2.groningen.nl