Robtex

Up: 216.123.128.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 216.123.144.0/21
Down right: 216.123.152.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
216.123.144.2	PTR	c1-eac2.eacanada.com
216.123.144.98	PTR	c1-eac98.eacanada.com
216.123.144.113	PTR	c1-eac113.eacanada.com
216.123.144.145	PTR	c1-eac145.eacanada.com
216.123.147.60	A	216-123-147-60.dedicated.allstream.net
216.123.147.117	A	216-123-147-117.dedicated.allstream.net
216.123.149.166	A	www.caneda.com
216.123.149.246	A	border02.equinox-eng.com
216.123.149.246	A	border01.equinox-eng.com
216.123.149.246	A	b909-02.equinox-eng.com
216.123.152.2	A	hq.layer7tech.com
216.123.152.2	A	mail.l7tech.com
216.123.152.2	A	mail.layer7tech.com
216.123.152.6	A	tlabsipc5.tieus.com
216.123.152.34	A	vpn.sentio.ca
216.123.152.35	A	mail.sentio.ca
216.123.152.74	A	mail.nerdcorps.com
216.123.152.74	A	postmaster.nerdcorps.com
216.123.152.75	A	mail.nerdcorps.com
216.123.152.75	A	ns1.nerdcorps.com
216.123.152.77	A	michigan.nerdcorps.ca
216.123.152.171	A	intranet.tieus.com
216.123.152.238	A	nopam.tieus.com
216.123.153.1	A	216-123-153-1.dedicated.allstream.net
216.123.153.36	A	admin.tieus.com
216.123.153.42	A	mail.sunwestaviation.ca
216.123.153.67	A	csdc-asa1.campus-support.ca
216.123.153.69	A+PTR	mx.cdimail.ca
216.123.153.76	A	quad.campus-support.ca
216.123.153.79	PTR	mx2.campus-support.ca
216.123.153.79	A	mx2.cdimail.ca
216.123.153.85	PTR	exch-cluster.campus-support.ca
216.123.153.85	A	exch-cluster.vccollege.ca
216.123.153.85	A	exch-cluster.reevescollege.ca
216.123.153.86	PTR	edge.campus-support.ca
216.123.153.100	A	ellis.edu
216.123.153.100	A	my.ellis.edu
216.123.153.100	A	www.ellis.edu
216.123.153.110	PTR	216-123-153-110.dedicated.allstream.net
216.123.153.147	A+PTR	xserve1.newsfilecorp.com
216.123.153.147	A	xpressfiler.com
216.123.153.147	A	tntfilings.com
216.123.153.210	A	bablackwell.com
216.123.153.226	A	victoria.edoc.ca
216.123.153.226	A	helmconnect.com
216.123.155.10	A	perfectad.com
216.123.155.65	PTR	ptplan1.eacanada.com
216.123.155.90	A+PTR	mynx.electric.net
216.123.155.146	A+PTR	216-123-155-146.dedicated.allstream.net
216.123.155.157	A	216-123-155-157.dedicated.allstream.net
216.123.155.178	A	icexchangesurrey.i-dvr.net
216.123.155.195	PTR	216-123-155-195.dedicated.allstream.net
216.123.155.199	A	216-123-155-199.dedicated.allstream.net
216.123.157.42	A	mail.sandmanhotels.com
216.123.157.42	A	mail.sandman.ca
216.123.157.42	A	mail.northland.ca
216.123.159.66	PTR	clearly.ca
216.123.159.68	PTR	waterfrontgroup.com