Robtex

Up: 2603:5:2240::/42
Can't show all results, try to descend to a more specific CIDR
Down left: 2603:5:2260::/44
Down right: 2603:5:2270::/44
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
2603:5:2260::3	A+PTR	ns06.domaincontrol.com
2603:5:2261::d	A+PTR	ns26.domaincontrol.com
2603:5:2262::17	A+PTR	ns46.domaincontrol.com
2603:5:2264::2b	A+PTR	ns66.domaincontrol.com
2603:5:2270::4	A+PTR	ns08.domaincontrol.com
2603:5:2271::e	A+PTR	ns28.domaincontrol.com
2603:5:2272::18	A+PTR	ns48.domaincontrol.com
2603:5:2272::18	A	motherfield.com
2603:5:2272::18	A	frostbud.com
2603:5:2274::2c	A+PTR	ns68.domaincontrol.com