Robtex

Up: 23.133.64.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 23.133.64.0/25
Down right: 23.133.64.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
23.133.64.5	PTR	lamp01.freerangecloud.com
23.133.64.5	A	amerasearch-hosting.biz
23.133.64.5	A	www.amerasearch-hosting.biz
23.133.64.10	PTR	lamp.anycast.ipaddr.is
23.133.64.10	A	ve7alb.ca
23.133.64.10	A	lukemills.ca
23.133.64.18	A+PTR	varuestex.com
23.133.64.22	PTR	gurusone.net
23.133.64.52	A	chargetravel.com
23.133.64.52	A	redhotcomputers.com
23.133.64.54	PTR	mx1.meierhofer.net
23.133.64.75	PTR	relay-ca.letter.is
23.133.64.101	A	canada.uturbo.xyz
23.133.64.105	PTR	providersay.com
23.133.64.110	PTR	ouf.xbhdabss.org
23.133.64.166	PTR	mail.klartech.com
23.133.64.166	A+PTR	mail.klartech.ca
23.133.64.166	PTR	mail.concordfarms.net