Robtex

Up: 72.1.148.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 72.1.149.0/25
Down right: 72.1.149.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.1.149.1	PTR	dsl001-149-001.sfo1.dsl.speakeasy.net
72.1.149.5	A+PTR	dsl001-149-005.sfo1.dsl.speakeasy.net
72.1.149.10	A	mail.hoodthomas.com
72.1.149.15	PTR	ns2.augustinecorp.com
72.1.149.18	A+PTR	dsl001-149-018.sfo1.dsl.speakeasy.net
72.1.149.25	A+PTR	dsl001-149-025.sfo1.dsl.speakeasy.net
72.1.149.31	A+PTR	dsl001-149-031.sfo1.dsl.speakeasy.net
72.1.149.32	A+PTR	dsl001-149-032.sfo1.dsl.speakeasy.net
72.1.149.33	A+PTR	dsl001-149-033.sfo1.dsl.speakeasy.net
72.1.149.35	PTR	mx2.schaferlabs.com
72.1.149.36	A+PTR	dsl001-149-036.sfo1.dsl.speakeasy.net
72.1.149.37	A+PTR	dsl001-149-037.sfo1.dsl.speakeasy.net
72.1.149.38	A+PTR	dsl001-149-038.sfo1.dsl.speakeasy.net
72.1.149.45	PTR	dsl001-149-045.sfo1.dsl.speakeasy.net
72.1.149.54	A+PTR	dsl001-149-054.sfo1.dsl.speakeasy.net
72.1.149.74	PTR	dsl001-149-074.sfo1.dsl.speakeasy.net
72.1.149.81	A+PTR	dsl001-149-081.sfo1.dsl.speakeasy.net
72.1.149.82	PTR	dsl001-149-082.sfo1.dsl.speakeasy.net
72.1.149.83	PTR	dsl001-149-083.sfo1.dsl.speakeasy.net
72.1.149.84	PTR	dsl001-149-084.sfo1.dsl.speakeasy.net
72.1.149.85	A+PTR	dsl001-149-085.sfo1.dsl.speakeasy.net
72.1.149.100	A	mail.etzleinu.com
72.1.149.100	A	server.etzleinu.net
72.1.149.100	A	server.etzleinu.com
72.1.149.119	A+PTR	dsl001-149-119.sfo1.dsl.speakeasy.net
72.1.149.139	A+PTR	dsl001-149-139.sfo1.dsl.speakeasy.net
72.1.149.157	A+PTR	dsl001-149-157.sfo1.dsl.speakeasy.net
72.1.149.169	PTR	deathstar.bdtechnical.com
72.1.149.186	A+PTR	dsl001-149-186.sfo1.dsl.speakeasy.net
72.1.149.199	A+PTR	dsl001-149-199.sfo1.dsl.speakeasy.net
72.1.149.215	A+PTR	dsl001-149-215.sfo1.dsl.speakeasy.net
72.1.149.216	A+PTR	dsl001-149-216.sfo1.dsl.speakeasy.net
72.1.149.223	A+PTR	dsl001-149-223.sfo1.dsl.speakeasy.net
72.1.149.232	PTR	tiger.istumbler.net
72.1.149.236	A+PTR	dsl001-149-236.sfo1.dsl.speakeasy.net
72.1.149.236	A	pricegroup.org
72.1.149.238	PTR	caracal.istumbler.net