Robtex

Up: 204.124.128.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 204.124.132.0/23
Down right: 204.124.134.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
204.124.135.6	PTR	email.independenthealth.com
204.124.135.6	PTR	gwmail.independenthealth.com
204.124.135.6	A+PTR	netservb.independenthealth.com
204.124.135.8	A	sftp.independenthealth.com
204.124.135.12	A+PTR	fitnessforkids.independenthealth.com
204.124.135.12	PTR	www.independenthealth.com
204.124.135.12	A	www.independenthealth.us
204.124.135.20	A	report.independenthealth.com
204.124.135.28	A+PTR	ww3.independenthealth.com
204.124.135.38	A	vs-sso-prod.independenthealth.com
204.124.135.39	A+PTR	vs-sso-qa.independenthealth.com
204.124.135.47	A+PTR	redshirttreatment.org
204.124.135.47	A	redshirttreatment.net
204.124.135.50	A	zixvpm1.independenthealth.com
204.124.135.50	A	zixvpm.independenthealth.com
204.124.135.51	A	zixvpm.independenthealth.com
204.124.135.51	A	zixvpm2.independenthealth.com
204.124.135.53	PTR	webmail.independenthealth.com
204.124.135.60	A	bi.independenthealth.com
204.124.135.64	A	siebelmail4.independenthealth.com
204.124.135.65	A	vs-soa-qa.independenthealth.com
204.124.135.66	A	vs-soa-prod.independenthealth.com
204.124.135.78	A+PTR	mta01.independenthealth.com
204.124.135.79	A+PTR	mta02.independenthealth.com
204.124.135.80	PTR	nx01.independenthealth.com
204.124.135.80	A	mailin1.independenthealth.com
204.124.135.81	PTR	nx02.independenthealth.com
204.124.135.128	A	www.novahealthcareadministrators.com
204.124.135.128	A	novahealthcareadministrators.com
204.124.135.151	A	qa.independenthealth.com
204.124.135.176	A	ns1.independenthealth.com
204.124.135.178	A	ns2.independenthealth.com
204.124.135.179	A	firstnightbuffalo.com
204.124.135.179	A	firstnightbuffalo.org
204.124.135.180	A	theprimaryconnection.com
204.124.135.180	A	theprimaryconnection.org
204.124.135.180	A	indpendenthealth.com
204.124.135.188	A	webmail.independenthealth.com
204.124.135.188	A	email.independenthealth.com
204.124.135.188	A	gwmail.independenthealth.com
204.124.135.208	A+PTR	vdiqa.independenthealth.com
204.124.135.231	A	www.pbdrx.com
204.124.135.231	A	pbdrx.com
204.124.135.232	A	www.novahealthcare.com
204.124.135.232	A	novahealthcare.com