Robtex

Up: 199.43.132.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 199.43.134.0/24
Down right: 199.43.135.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
199.43.134.53	A+PTR	c.iana-servers.net
199.43.134.53	A	c.iana-servers.org
199.43.134.53	A	z.iana-servers.net
199.43.135.53	A+PTR	a.iana-servers.net
199.43.135.53	A	a.icann-servers.net
199.43.135.53	A	a.iana-servers.org