Robtex

Up: 202.124.64.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 202.124.68.0/23
Down right: 202.124.70.0/23

IP	Type	Hostname
202.124.68.2	A	cmspftp.three.com.au
202.124.68.11	A+PTR	ask3.three.com.au
202.124.68.39	A	mail.three.com.au
202.124.68.40	A	webmail.three.com.au
202.124.68.40	A	www.webmail.three.com.au
202.124.68.49	PTR	mail.three.com.au
202.124.68.51	PTR	webmail.three.com.au
202.124.68.52	A+PTR	smtpin2.three.com.au
202.124.68.52	A+PTR	mail.vodafone.net.au
202.124.68.52	A	smtp.three.com.au
202.124.68.59	A+PTR	smtpout3.three.com.au
202.124.68.65	A	ask3test.three.com.au
202.124.68.81	A	cmspftp.three.com.au
202.124.68.119	A	mchk1.three.com.au