Robtex

Up: 172.255.136.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 172.255.140.0/23
Down right: 172.255.142.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
172.255.140.22	PTR	172.255.140.22.rdns.ubiquityservers.com
172.255.141.214	A	ns1.innovativepope.com
172.255.141.215	A	ns2.innovativepope.com
172.255.141.216	A	mockfree.innovativepope.com
172.255.141.216	A	unbelievableguaranteed.innovativepope.com
172.255.142.214	A	ns1.expertgiving.com
172.255.142.215	A	ns2.expertgiving.com
172.255.142.216	A	expertgiving.com
172.255.142.216	A	revealedfellow.expertgiving.com
172.255.143.55	A	ns1.expertwonde.com
172.255.143.56	A	ns2.expertwonde.com
172.255.143.57	A	fincher.expertwonde.com
172.255.143.57	A	jacoby.expertwonde.com
172.255.143.57	A	seifert.expertwonde.com
172.255.143.163	A	vpn00151.explainedpure.com
172.255.143.163	A	vpn00123.explainedpure.com
172.255.143.163	A	vpn00149.explainedpure.com