Robtex

Up: 192.228.20.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 192.228.20.0/25
Down right: 192.228.20.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
192.228.20.2	A+PTR	firewall.domtar.com
192.228.20.26	A	domtar.ca
192.228.20.26	A	domtar.cn
192.228.20.26	A	epaper.com
192.228.20.27	A+PTR	gandhi.domtar.com
192.228.20.27	A	www.epaper.com
192.228.20.30	PTR	www.e-woodgroup.com
192.228.20.31	A	as.domtar.com
192.228.20.32	A+PTR	makar.domtar.com
192.228.20.33	A+PTR	mtlowa.domtar.com
192.228.20.35	A+PTR	pentheus.domtar.com
192.228.20.36	A	ftp.domtar.com
192.228.20.45	PTR	forweb.domtar.com
192.228.20.46	A+PTR	email.domtar.com
192.228.20.46	A	mail.domtar.com
192.228.20.46	A	mx1.domtar.com
192.228.20.47	A+PTR	email02.domtar.com
192.228.20.47	A	mx2.domtar.com
192.228.20.57	A	webmail.domtar.com
192.228.20.57	A	imap.domtar.com
192.228.20.60	A+PTR	goddardb2b.domtar.com
192.228.20.67	PTR	www.domtar.com
192.228.20.67	A	domtar.cn
192.228.20.67	A	truthinpaper.com
192.228.20.75	A	email.domtar.com