Robtex

Up: 72.9.132.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 72.9.132.0/24
Down right: 72.9.133.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.9.132.11	A+PTR	server.trackandfieldtrainingzone.com
72.9.132.11	A	trackandfieldtrainingzone.com
72.9.132.19	A+PTR	server.kidsportcanada.ca
72.9.132.19	A	kidsportcanada.ca
72.9.132.21	PTR	www0.mmaweb.net
72.9.132.23	PTR	server.entersolar.com
72.9.132.23	A	max-solar.com
72.9.132.24	PTR	server.mydalaican.net
72.9.132.24	A	spacanino.com.mx
72.9.132.28	PTR	server.excavatorthumb.com
72.9.132.28	A	redoaknc.com
72.9.132.33	A+PTR	server.agrotemario.com
72.9.132.33	A	agrotemario.com
72.9.132.36	PTR	server.inodata.mx
72.9.132.36	A	ns2.inodata.mx
72.9.132.36	A	tortuguitas.com.mx
72.9.132.40	PTR	server.brpoolsusa.com
72.9.132.40	A	ezpoolestimator.com
72.9.132.45	A+PTR	server.wujitech.com
72.9.132.45	A	wujitech.com
72.9.132.45	A	yogatracking.com
72.9.132.48	A+PTR	server.stbx2.com
72.9.132.48	A	stbx2.com
72.9.132.50	PTR	server.doylesails.com
72.9.132.50	A	doyleinnovation.com
72.9.132.63	A+PTR	server.amtdev.com
72.9.132.63	A	lakechatugewaterfrontrental.com
72.9.132.63	A	lakechatugecottage.com
72.9.132.64	A	tstn.com
72.9.132.67	PTR	server.hsp.ecomchannel.es
72.9.132.67	A	hsp-renovables.com
72.9.132.91	A	mail.wbct.us
72.9.132.95	PTR	server.trailresearch.org
72.9.132.95	A	montesionperu.com
72.9.132.97	A	delfiniti.com
72.9.132.99	PTR	server.prolesa.com.uy
72.9.132.99	A	carsteninc.com
72.9.132.100	PTR	server.new-delfiniti.com
72.9.132.100	A	securewebmailinvoenamore.com
72.9.132.100	A	secure-itinerartyanglekme.com
72.9.132.102	A	www.artfullyautistic.com
72.9.132.215	A	travellinksagent.com
72.9.132.216	PTR	tyspower.com
72.9.132.216	A	ostransky.com
72.9.132.221	A+PTR	mail.razornetworks.com
72.9.132.221	A	handmfaith.com
72.9.132.221	A	heartandmindfaith.com
72.9.132.232	PTR	mail.wssi.ca
72.9.132.232	A	bcplaygroundsurfaces.com
72.9.133.5	A	ns2.servergrove.com