Robtex

Up: 128.77.64.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 128.77.64.0/20
Down right: 128.77.80.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
128.77.64.1	PTR	cm-128.77.64.1.getinternet.no
128.77.64.254	PTR	cm-128.77.64.254.getinternet.no
128.77.64.254	A	korsnesrorvik.net
128.77.66.230	PTR	cm-128.77.66.230.getinternet.no
128.77.66.244	PTR	cm-128.77.66.244.getinternet.no
128.77.66.244	A	aandstad.no-ip.net
128.77.70.221	PTR	cm-128.77.70.221.getinternet.no
128.77.73.36	A	aasebo.net
128.77.73.181	PTR	cm-128.77.73.181.getinternet.no
128.77.73.181	A	dynamicsparkle.com
128.77.75.122	PTR	cm-128.77.75.122.getinternet.no
128.77.79.74	PTR	cm-128.77.79.74.getinternet.no
128.77.79.74	A	ksconsulting.info
128.77.81.106	PTR	cm-128.77.81.106.getinternet.no
128.77.81.106	A	aasebo.net
128.77.81.106	A	aasebo.org
128.77.81.232	PTR	cm-128.77.81.232.getinternet.no
128.77.81.232	A	movinpics.com
128.77.83.13	PTR	cm-128.77.83.13.getinternet.no
128.77.84.193	PTR	cm-128.77.84.193.getinternet.no
128.77.84.193	A	solis3.org
128.77.85.238	PTR	cm-128.77.85.238.getinternet.no
128.77.85.238	A	infinigirl.com
128.77.85.238	A	e-linkr.com
128.77.86.121	PTR	cm-128.77.86.121.getinternet.no
128.77.86.121	A	cavo.no
128.77.86.176	PTR	cm-128.77.86.176.getinternet.no
128.77.86.176	A	luppheim.dnsalias.com
128.77.88.1	PTR	cm-128.77.88.1.getinternet.no
128.77.88.1	A	linksecure.org
128.77.88.83	PTR	cm-128.77.88.83.getinternet.no
128.77.89.41	PTR	cm-128.77.89.41.getinternet.no
128.77.91.224	PTR	cm-128.77.91.224.getinternet.no
128.77.92.166	PTR	cm-128.77.92.166.getinternet.no
128.77.92.166	A	apalm.no
128.77.93.47	A	postkontor.no-ip.com