Robtex

Up: 2a01:28::/31
Can't show all results, try to descend to a more specific CIDR
Down left: 2a01:28::/33
Down right: 2a01:28:8000::/33
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
2a01:28:aa:44::1	A+PTR	ns1.superhosting.cz
2a01:28:aa:44::2	A+PTR	ns2.superhosting.cz
2a01:28:aa:44::2	A	dns.superhosting.cz
2a01:28:aa:44::3	A+PTR	nsc1.superhosting.cz
2a01:28:cb6:2::f	A	r4.sn-n02xgoxufvg3-2gbl.googlevideo.com
2a01:28:cb6:2::12	A	r7.sn-n02xgoxufvg3-2gbl.googlevideo.com
2a01:28:cb6:3::c	A	r1.sn-n02xgoxufvg3-2gbs.googlevideo.com
2a01:28:cb6:3::f	A	r4.sn-n02xgoxufvg3-2gbs.googlevideo.com
2a01:28:cba::1	A	ns1.superhosting.cz
2a01:28:cba::3	A	nsc1.superhosting.cz
2a01:28:ca01::75	A	mohy.cz
2a01:28:ca01::75	A	kerberosit.cz
2a01:28:ca01::75	A	nanoprotectiontechnology.cz
2a01:28:ca01::77	PTR	v6.ns1.kerberosit.cz