Robtex

Up: 199.253.200.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 199.253.204.0/23
Down right: 199.253.206.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
199.253.204.5	A	vpn-tx-01.apria.com
199.253.204.10	A+PTR	vpn2.apria.com
199.253.204.15	A+PTR	ns02.apria.com
199.253.204.20	A+PTR	anyconnect-tx.apria.com
199.253.204.35	PTR	cm_pager.apria.com
199.253.204.35	A+PTR	crnmta01b.apria.com
199.253.204.35	PTR	cm_domino.is.apria.com
199.253.204.36	A	crnmta02b.apria.com
199.253.204.51	PTR	crnweb01.apria.com
199.253.204.51	PTR	ecommerce.apria.com
199.253.204.51	PTR	intweb.apria.com
199.253.204.53	PTR	qa02.apria.com
199.253.204.62	PTR	learn2.apria.com
199.253.204.70	PTR	crnmta03.apria.com
199.253.204.71	PTR	learn1.apria.com
199.253.204.74	PTR	crnml02.apria.com
199.253.204.75	PTR	ftphost.apria.com
199.253.204.76	A+PTR	mx2.apria.com
199.253.204.80	A+PTR	crnml01.apria.com
199.253.204.81	A+PTR	crnml03.apria.com
199.253.204.247	PTR	202147.apria.com