Robtex

Up: 209.217.122.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 209.217.123.0/25
Down right: 209.217.123.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
209.217.123.7	A	nexgenrx.net
209.217.123.8	A	owa.nexgenrx.com
209.217.123.13	PTR	ottawa-hs-209-217-123-13.static.magma.ca
209.217.123.31	PTR	ottawa-hs-209-217-123-31.d-ip.magma.ca
209.217.123.32	PTR	ottawa-hs-209-217-123-32.d-ip.magma.ca
209.217.123.35	PTR	ottawa-hs-209-217-123-35.static.magma.ca
209.217.123.54	PTR	ottawa-hs-209-217-123-54.d-ip.magma.ca
209.217.123.67	PTR	ottawa-hs-209-217-123-67.static.magma.ca
209.217.123.73	PTR	ottawa-hs-209-217-123-73.static.magma.ca
209.217.123.98	PTR	ottawa-hs-209-217-123-98.static.magma.ca
209.217.123.98	A	mail.spclive.com
209.217.123.114	PTR	ottawa-hs-209-217-123-114.static.magma.ca
209.217.123.126	PTR	ottawa-hs-209-217-123-126.static.magma.ca
209.217.123.147	PTR	ottawa-hs-209-217-123-147.static.magma.ca
209.217.123.162	A	mail.ubiqus.ca
209.217.123.183	PTR	ottawa-hs-209-217-123-183.static.magma.ca
209.217.123.192	PTR	ottawa-hs-209-217-123-192.static.magma.ca
209.217.123.195	PTR	ottawa-hs-209-217-123-195.d-ip.magma.ca
209.217.123.204	PTR	ottawa-hs-209-217-123-204.static.magma.ca
209.217.123.204	A	mail.digitalboundary.net
209.217.123.206	PTR	ottawa-hs-209-217-123-206.d-ip.magma.ca
209.217.123.206	A	itrg-drop.com
209.217.123.210	A+PTR	mx1.pentestresearch.net
209.217.123.210	A	mx1.vpnhost.org
209.217.123.210	A	mx1.accountsync.net
209.217.123.211	PTR	ottawa-hs-209-217-123-211.static.magma.ca
209.217.123.211	A	remotewebportal.com
209.217.123.211	A	report-drop.com
209.217.123.212	PTR	ottawa-hs-209-217-123-212.static.magma.ca
209.217.123.212	A	report-drop.com
209.217.123.212	A	outlook-corporate.com
209.217.123.213	PTR	ottawa-hs-209-217-123-213.static.magma.ca
209.217.123.213	A	report-drop.com
209.217.123.213	A	accountsync.net
209.217.123.214	PTR	ottawa-hs-209-217-123-214.static.magma.ca
209.217.123.214	A	report-drop.com
209.217.123.214	A	externalaccessportal.com
209.217.123.215	PTR	mailportal.ca
209.217.123.215	A	report-drop.com
209.217.123.215	A	dontclickme.mailportal.ca
209.217.123.216	PTR	ottawa-hs-209-217-123-216.static.magma.ca
209.217.123.216	A	xfil.me
209.217.123.234	PTR	ottawa-hs-209-217-123-234.static.magma.ca
209.217.123.239	PTR	ottawa-hs-209-217-123-239.static.magma.ca
209.217.123.239	A	tv.sentrysource.com
209.217.123.246	PTR	ottawa-hs-209-217-123-246.static.magma.ca
209.217.123.250	PTR	ottawa-hs-209-217-123-250.static.magma.ca
209.217.123.253	PTR	ottawa-hs-209-217-123-253.static.magma.ca