Robtex

Up: 199.245.254.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 199.245.255.0/25
Down right: 199.245.255.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
199.245.255.11	A	autodiscover.portla.org
199.245.255.11	A	webmail.portla.org
199.245.255.29	PTR	portla.org
199.245.255.29	A	connec.portla.org
199.245.255.29	A	mail2.portla.org
199.245.255.56	A+PTR	email.portla.org
199.245.255.133	A+PTR	poladns.portla.org
199.245.255.134	PTR	poladns.portla.org
199.245.255.148	A	insidepola.portla.org
199.245.255.149	A	connect.portla.org
199.245.255.150	A	sft.portla.org
199.245.255.156	A	lapilot.portla.org
199.245.255.158	A	adfs.portla.org
199.245.255.164	A	rvs1.portla.org