Robtex

Up: 204.74.96.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 204.74.97.0/25
Down right: 204.74.97.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
204.74.97.1	A	rtrpxpa.ultradns.net
204.74.97.2	A+PTR	util1pxpa.ultradns.net
204.74.97.2	A	fw1pxpa.ultradns.net
204.74.97.3	A	loggerpxpa.ultradns.net
204.74.97.3	A	rtrpxpa-lo0.ultradns.net
204.74.97.4	A+PTR	logbackerpxpa.ultradns.net
204.74.97.4	PTR	logc1pxpa.ultradns.net
204.74.97.5	PTR	crs.ultradns.net
204.74.97.7	A+PTR	sundb1pxpa.ultradns.net
204.74.97.8	A	secidpxpa.ultradns.net
204.74.97.10	A+PTR	sndu1pxpa.ultradns.net
204.74.97.11	A	sw1pxpa.ultradns.net
204.74.97.13	A	sw2pxpa.ultradns.net
204.74.97.14	A	sw3pxpa.ultradns.net
204.74.97.16	A	sw5pxpa.ultradns.net
204.74.97.17	A+PTR	sw6pxpa.ultradns.net
204.74.97.18	A	leafdb4pxpa.ultradns.net
204.74.97.19	A	udns1pxpa.ultradns.net
204.74.97.20	A	udns2pxpa.ultradns.net
204.74.97.21	A	leafdb5pxpa.ultradns.net
204.74.97.22	A+PTR	leafdb6pxpa.ultradns.net
204.74.97.24	A+PTR	udns4pxpa.ultradns.net
204.74.97.25	A+PTR	udns6pxpa.ultradns.net
204.74.97.26	A	udns5pxpa.ultradns.net
204.74.97.35	A+PTR	mailbacker.ultradns.net
204.74.97.35	PTR	mxbpxpa.ultradns.net
204.74.97.40	A+PTR	crs1pxpa.ultradns.net
204.74.97.41	A+PTR	cdb1pxpa.ultradns.net
204.74.97.42	A	sfdb1pxpa.ultradns.net
204.74.97.43	A	isupport.ultradns.net
204.74.97.45	A	mdb1pxpa.ultradns.net
204.74.97.53	A+PTR	ftp1pxpa.ultradns.net
204.74.97.60	A+PTR	sshgwpxpa.ultradns.net
204.74.97.62	A+PTR	xtld2pxpa.ultradns.net
204.74.97.68	A	oem1pxpa.ultradns.net
204.74.97.85	A+PTR	hp1pxpa.ultradns.net
204.74.97.85	PTR	rdns1pxpa.ultradns.net
204.74.97.89	A+PTR	ui-natpxpa.ultradns.net
204.74.97.95	A+PTR	web1pxpa.ultradns.net
204.74.97.97	PTR	axfr1pxpa.ultradns.net
204.74.97.97	A	sunweb1pxpa.ultradns.net
204.74.97.97	A	server1.dnsnotify.acp.org
204.74.97.98	PTR	www.ultradns.net
204.74.97.98	A	www1.ultradns.net
204.74.97.99	A	www1.secondarydns.com
204.74.97.100	A	api1pxpa.ultradns.net
204.74.97.104	A	rdns3pxpa.ultradns.net
204.74.97.111	A	q1pxpa.ultradns.net
204.74.97.112	A+PTR	tld1pxpa.ultradns.net
204.74.97.113	A+PTR	tld2pxpa.ultradns.net
204.74.97.114	A	tld6pxpa.ultradns.net
204.74.97.115	A	tld3pxpa.ultradns.net
204.74.97.116	A	tld4pxpa.ultradns.net
204.74.97.117	A+PTR	tld5pxpa.ultradns.net
204.74.97.118	A	tld7pxpa.ultradns.net
204.74.97.119	A	tld8pxpa.ultradns.net
204.74.97.120	A	q2pxpa.ultradns.net
204.74.97.129	A	sbm1pxpa.ultradns.net
204.74.97.130	A	sba1pxpa.ultradns.net
204.74.97.136	A	pcap2pxpa.ultradns.net
204.74.97.150	A+PTR	logc1pxpa.ultradns.net
204.74.97.227	A	crsmailpxpa.ultradns.net
204.74.97.235	A	mrv5pxpa.ultradns.net
204.74.97.254	A+PTR	tms1pxpa.ultradns.net