Robtex

Up: 199.19.80.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 199.19.80.0/23
Down right: 199.19.82.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
199.19.80.38	PTR	dailytech.com
199.19.80.39	PTR	dailytech.com
199.19.80.40	A+PTR	mail.anandtech.com
199.19.80.53	PTR	dailytech.com
199.19.80.54	PTR	dailytech.com
199.19.80.55	PTR	dailytech.com
199.19.80.56	PTR	dailytech.com
199.19.80.229	PTR	healthassociates.org
199.19.80.229	A	mail.patientaccounts.info
199.19.80.230	A	stilwellcommunity.org
199.19.80.230	A	emrsupport.org
199.19.80.230	A	texaspha.com
199.19.81.25	A	zpanel.co.uk
199.19.81.25	A	www.zpanel.co.uk
199.19.81.26	A	bluepixel.co.za
199.19.81.226	PTR	arrowhead.wznoc.com
199.19.81.226	A	a-199-19-81-226.michaelbellino.com
199.19.81.226	A	arroyoycabrera.com
199.19.81.231	A	secondphaseinc.com
199.19.81.242	A	mo3.mineocityhosting.com
199.19.81.252	A	smartpointe.net
199.19.81.253	A	belowmarketvalue.com
199.19.83.139	PTR	mail.eypc.org