Robtex

Up: 208.80.72.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 208.80.72.0/23
Down right: 208.80.74.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
208.80.72.2	A+PTR	gtw13.esc13.net
208.80.72.5	PTR	ns1.esc13.net
208.80.72.6	A+PTR	esc13-mx3.txed.net
208.80.72.10	PTR	mail.luling.txed.net
208.80.72.20	A	bisdlibrary.blanco.txed.net
208.80.72.20	A	www.dripping-springs.k12.tx.us
208.80.72.27	A+PTR	ecampus.esc13.net
208.80.72.31	A	mail.dripping-springs.txed.net
208.80.72.39	PTR	smtp.scuc.txed.net
208.80.72.45	A	mail.lockhartisd.org
208.80.72.49	A	mx.mfisd.txed.net
208.80.72.55	A+PTR	smtp.scuc.txed.net
208.80.72.67	A+PTR	esc13-mx.txed.net
208.80.72.67	A	mail.bartlett.txed.net
208.80.72.80	A+PTR	davidson.del-valle.k12.tx.us
208.80.72.89	PTR	www.esc13.net
208.80.72.89	A	www.txed.net
208.80.72.98	PTR	txinit.esc13.net
208.80.72.98	A	gtequity.org
208.80.72.98	A	mail.gtequity.org
208.80.72.100	A	gw.esc13.txed.net
208.80.72.104	A	newmail.del-valle.k12.tx.us
208.80.72.114	A	s21202.tsbvi.txed.net
208.80.72.125	PTR	rocket.fisd.org
208.80.72.138	PTR	txccrsc.esc13.net
208.80.72.138	A	www.texasgtresource.org
208.80.72.138	A	texasgtresource.org
208.80.72.160	PTR	exchange.fisd.org
208.80.72.169	A	couplandisd.net
208.80.72.183	PTR	tetnsolar.tetnplus.net
208.80.72.183	A	tetnplus.net
208.80.72.224	A	listserv.esc13.net
208.80.72.240	A	esc13-mx2.txed.net
208.80.72.244	A+PTR	lists.esc13.net
208.80.72.246	PTR	mail.txed.net
208.80.72.253	A+PTR	gtw13-2.esc13.net
208.80.73.2	PTR	webmail.bartlett.txed.net
208.80.73.5	PTR	montage.esc13.net
208.80.73.6	A+PTR	jukebox.esc13.net
208.80.73.6	A	ontrack-media.net
208.80.73.9	PTR	aw1.laketravis.txed.net
208.80.73.26	A+PTR	www.tetnplus.net
208.80.73.26	A	tetnplus.org
208.80.73.26	A	tetnplus.com
208.80.73.33	PTR	hipponet.hutto.txed.net
208.80.73.33	A	hutto.txed.net
208.80.73.40	PTR	pandora.esc13.net
208.80.73.40	A	texasturnaround.net
208.80.73.40	A	tcmpc.info
208.80.73.43	PTR	cipa.mfisd.txed.net
208.80.73.155	A+PTR	barracuda.del-valle.k12.tx.us
208.80.73.174	A	smtp1.del-valle.k12.tx.us
208.80.73.246	A	txsuite.esc13.net
208.80.74.6	PTR	pat.wimberley.txed.net
208.80.74.7	PTR	pat.newbraunfels.txed.net
208.80.74.9	PTR	pat.prairielea.txed.net
208.80.74.13	PTR	pat.florence.txed.net
208.80.74.24	PTR	pat.johnsoncity.txed.net
208.80.74.31	PTR	pat.scuc.txed.net
208.80.74.49	PTR	pat.navarro.txed.net
208.80.74.227	A+PTR	mx0.esc13.net
208.80.74.227	A	mxquad.esc13.net
208.80.74.228	A+PTR	mx1.esc13.net
208.80.74.228	A	mxquad.esc13.net
208.80.74.229	A+PTR	mx2.esc13.net
208.80.74.229	A	mxquad.esc13.net
208.80.74.230	A+PTR	mx3.esc13.net
208.80.74.230	A	mxquad.esc13.net
208.80.75.24	A	www.schoolleadership.net
208.80.75.24	A	r13leadershipcoaching.net
208.80.75.24	A	tcdss.net