Robtex

Up: 192.41.148.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 192.41.148.0/25
Down right: 192.41.148.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
192.41.148.35	A+PTR	adm-ext-dns1.gov.calgary.ab.ca
192.41.148.35	A+PTR	city.gov.calgary.ab.ca
192.41.148.35	A	dns2.informalberta.net
192.41.148.36	A+PTR	adm-ext-dns2.gov.calgary.ab.ca
192.41.148.36	A+PTR	fw1.gov.calgary.ab.ca
192.41.148.36	A	dns1.informalberta.net
192.41.148.43	PTR	edocftp2.gov.calgary.ab.ca
192.41.148.50	PTR	dmzapp1.calgarycity.ca
192.41.148.50	A+PTR	dmzapp1.gov.calgary.ab.ca
192.41.148.52	PTR	bos.calgary.ca
192.41.148.52	PTR	cypressmodem.calgary.ca
192.41.148.52	PTR	dhc.calgary.ca
192.41.148.55	A+PTR	lyncsip.calgary.ca
192.41.148.55	A	sip2013.calgary.ca
192.41.148.55	A	sip.calgary.ca
192.41.148.57	A+PTR	av2013.calgary.ca
192.41.148.57	A+PTR	ext-ns1.calgary.ca
192.41.148.57	A+PTR	lyncav.calgary.ca
192.41.148.65	A	webconf2013.calgary.ca
192.41.148.66	A+PTR	ocssip.calgary.ca
192.41.148.66	A+PTR	sip.calgary.ca
192.41.148.66	A+PTR	sip2013.calgary.ca
192.41.148.73	PTR	accesscalgaryuat.ca
192.41.148.73	A+PTR	calgarytransituat.com
192.41.148.73	A+PTR	www.calgarytransituat.com
192.41.148.74	A+PTR	jump.gov.calgary.ab.ca
192.41.148.76	A	jump2.gov.calgary.ab.ca
192.41.148.77	A	av2013.calgary.ca
192.41.148.78	A+PTR	ftp.calgary.ca
192.41.148.78	A+PTR	ftps.calgary.ca
192.41.148.83	A	www.calgaryskateparks.ca
192.41.148.83	A	www.thebridges.ca
192.41.148.83	A	www.calgaryskateparks.com
192.41.148.85	A	www2.calgarytransit.com
192.41.148.87	PTR	election.calgary.ca
192.41.148.87	A+PTR	vmxdmz802.gov.calgary.ab.ca
192.41.148.90	PTR	ln34.gov.calgary.ab.ca
192.41.148.90	A	media.gov.calgary.ab.ca
192.41.148.91	PTR	accesscalgary.ca
192.41.148.91	A+PTR	accesscalgary.com
192.41.148.91	PTR	calgarytransit.com
192.41.148.93	A+PTR	vpn.calgary.ca
192.41.148.100	A	oma.calgary.ca
192.41.148.104	A+PTR	hss.calgarytransit.com
192.41.148.104	PTR	www.calgarytransportation.com
192.41.148.116	A	documentmanagement.calgary.ca
192.41.148.120	PTR	mobilegateway.dev.calgary.ca
192.41.148.120	A	da.calgary.ca
192.41.148.122	A+PTR	calgaryonlinestore.com
192.41.148.122	A+PTR	www.calgaryonlinestore.com
192.41.148.122	PTR	calgaryonlinestore.com.calgaryonlinestore.com
192.41.148.124	A+PTR	cityonlinecalgary.com
192.41.148.124	A+PTR	www.cityonlinecalgary.com
192.41.148.124	A+PTR	cityonline.gov.calgary.ab.ca
192.41.148.137	PTR	kaos.calgary.ca
192.41.148.137	A+PTR	vortex.news.calgary.ca
192.41.148.137	A+PTR	kaos.services.calgary.ca
192.41.148.138	A+PTR	vortex.calgary.ca
192.41.148.138	A+PTR	kaos.news.calgary.ca
192.41.148.138	A+PTR	vortex.services.calgary.ca
192.41.148.196	A+PTR	join.calgary.ca
192.41.148.196	A+PTR	lync01a.calgary.ca
192.41.148.196	PTR	lync01b.calgary.ca
192.41.148.197	A+PTR	xctx.calgary.ca
192.41.148.214	A+PTR	rec-econnect.gov.calgary.ab.ca
192.41.148.214	A+PTR	liveandplaypayments.calgary.ca
192.41.148.214	A+PTR	epayment.calgary.ca
192.41.148.226	A+PTR	wm.calgary.ca
192.41.148.227	A+PTR	mail01.calgary.ca
192.41.148.228	A+PTR	mail02.calgary.ca
192.41.148.234	A+PTR	agendaminutes.calgary.ca
192.41.148.242	A+PTR	dart.calgary.ca
192.41.148.248	A+PTR	mail-out.gov.calgary.ab.ca
192.41.148.249	A+PTR	idmgatewaysso1.calgary.ca