Robtex

Up: 2600:1802::/46
Can't show all results, try to descend to a more specific CIDR
Down left: 2600:1802:2::/48
Down right: 2600:1802:3::/48
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
2600:1802:2::1	PTR	ns2.dnsmadeeasy.com
2600:1802:2::1	A	ns5.sycorr.net
2600:1802:2::1	A	ns2.offerzam.com
2600:1802:2::1:5	PTR	ns3.apexis.ch
2600:1802:2::1:6	PTR	ns2.department7.co.uk
2600:1802:3::1	A	ns3.domainproxynow.com