Robtex

Up: 185.89.216.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 185.89.218.0/24
Down right: 185.89.219.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
185.89.218.11	A	c.ns.c10r.facebook.com
185.89.218.11	A	c.ns.vvv.facebook.com
185.89.218.11	A	c.ns.cdn.whatsapp.net
185.89.218.12	A+PTR	c.ns.facebook.com
185.89.218.48	A	lb49.sin1.m.onavo.com
185.89.218.49	A	lb50.sin1.m.onavo.com
185.89.218.49	A	lb50-osgp1.rrr.onavo.com
185.89.218.51	A	lb52-osgp1.rrr.onavo.com
185.89.218.51	A	lb52.sin1.m.onavo.com
185.89.218.53	A	lb54-osgp1.rrr.onavo.com
185.89.218.53	A	lb54.sin1.m.onavo.com
185.89.218.59	A	a100.sin1.m.onavo.com
185.89.218.59	A	lb100-osgp1.rrr.onavo.com
185.89.218.192	A	vpn-osgp1.rrr.onavo.com
185.89.218.193	A	vpn-osgp1.rrr.onavo.com
185.89.218.194	A	vpn-osgp1.rrr.onavo.com
185.89.218.195	A	vpn-osgp1.rrr.onavo.com
185.89.218.196	A	vpn-osgp1.rrr.onavo.com
185.89.218.197	A	vpn-osgp1.rrr.onavo.com
185.89.218.198	A	vpn-osgp1.rrr.onavo.com
185.89.218.199	A	vpn-osgp1.rrr.onavo.com
185.89.218.200	A	vpn-osgp1.rrr.onavo.com
185.89.218.201	A	vpn-osgp1.rrr.onavo.com
185.89.218.202	A	vpn-osgp1.rrr.onavo.com
185.89.219.11	A	d.ns.igcdn.com
185.89.219.11	A	d.ns.xz.fbcdn.net
185.89.219.11	A	d.ns.fna.fbcdn.net
185.89.219.12	A+PTR	d.ns.facebook.com
185.89.219.44	A	lb45-ohkg3.rrr.onavo.com
185.89.219.45	A	lb46.hkg1.m.onavo.com
185.89.219.45	A	lb46-ohkg3.rrr.onavo.com
185.89.219.59	A	a100.hkg1.m.onavo.com