Robtex

Up: 81.88.64.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 81.88.72.0/22
Down right: 81.88.76.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
81.88.72.3	PTR	ip-3.72-88-81.bb.nextnet.no
81.88.72.3	A	remote.tgm-its.no
81.88.72.3	A	sbs.tgm-its.no
81.88.72.4	A	web01.tgm-its.no
81.88.72.41	PTR	ip-41.72-88-81.bb.nextnet.no
81.88.76.53	A	talksmart-ai.com