Robtex

Up: 208.69.34.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 208.69.34.0/25
Down right: 208.69.34.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
208.69.34.1	A	rtr1.lon.opendns.com
208.69.34.11	A+PTR	m1.lon.opendns.com
208.69.34.12	A+PTR	m2.lon.opendns.com
208.69.34.13	A+PTR	m3.lon.opendns.com
208.69.34.15	PTR	m5.lon.opendns.com
208.69.34.16	PTR	m6.lon.opendns.com
208.69.34.17	A+PTR	m7.lon.opendns.com
208.69.34.19	PTR	m9.lon.opendns.com
208.69.34.21	A+PTR	m11.lon.opendns.com
208.69.34.23	PTR	m13.lon.opendns.com
208.69.34.23	A	vpn.umbrella.opendns.com
208.69.34.23	A	vpn.tahoe.opendns.com
208.69.34.24	A+PTR	m14.lon.opendns.com
208.69.34.24	A	vpn.tahoe.opendns.com
208.69.34.25	A	m15.lon.opendns.com
208.69.34.27	PTR	vr2.lon.opendns.com
208.69.34.64	A+PTR	m17.lon.opendns.com
208.69.34.65	A+PTR	m21.lon.opendns.com
208.69.34.66	A+PTR	m25.lon.opendns.com
208.69.34.67	A+PTR	m29.lon.opendns.com
208.69.34.68	A+PTR	m33.lon.opendns.com
208.69.34.69	A+PTR	m37.lon.opendns.com
208.69.34.70	A+PTR	m41.lon.opendns.com
208.69.34.71	A+PTR	m45.lon.opendns.com
208.69.34.72	A+PTR	m49.lon.opendns.com
208.69.34.73	A+PTR	m53.lon.opendns.com
208.69.34.74	A+PTR	m57.lon.opendns.com
208.69.34.75	A+PTR	m61.lon.opendns.com
208.69.34.76	A+PTR	m65.lon.opendns.com
208.69.34.77	A+PTR	m69.lon.opendns.com
208.69.34.78	A+PTR	m73.lon.opendns.com
208.69.34.79	A+PTR	m77.lon.opendns.com
208.69.34.130	PTR	hit-adult.opendns.com
208.69.34.131	PTR	hit-block.opendns.com
208.69.34.132	PTR	hit-nxdomain.opendns.com
208.69.34.132	A	ns4.claynomi.com
208.69.34.132	A	tggezondheidszorg.nl
208.69.34.133	PTR	hit-phish.opendns.com
208.69.34.134	PTR	hit-servfail.opendns.com
208.69.34.135	PTR	block.opendns.com
208.69.34.136	PTR	guide.opendns.com
208.69.34.137	PTR	phish.opendns.com
208.69.34.138	PTR	block.opendns.com
208.69.34.139	PTR	guide.opendns.com
208.69.34.140	PTR	phish.opendns.com
208.69.34.142	PTR	www-files.opendns.com
208.69.34.143	PTR	hit-bpb.opendns.com
208.69.34.144	PTR	bpb.opendns.com
208.69.34.145	PTR	hit-nxdomain.dlinksearch.com
208.69.34.148	PTR	www1.dlinksearch.com
208.69.34.149	PTR	hit-malware.opendns.com
208.69.34.150	PTR	malware.opendns.com
208.69.34.152	A	block.proxy.umbrella.opendns.com
208.69.34.152	A	malware.proxy.umbrella.opendns.com
208.69.34.157	A	malware.proxy.umbrella.opendns.com
208.69.34.157	A	phish.opendns.com
208.69.34.230	A+PTR	v208-69-34-230.lon.opendns.com
208.69.34.231	A	v208-69-34-231.lon.opendns.com
208.69.34.249	A+PTR	v208-69-34-249.lon.opendns.com