Robtex

Up: 192.132.252.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 192.132.253.0/25
Down right: 192.132.253.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
192.132.253.34	A+PTR	dac.idp.com
192.132.253.39	PTR	lynaccess.idp.com.idp.com
192.132.253.39	PTR	cbr-lync01.idp.com
192.132.253.39	PTR	lyncaccess.idp.com
192.132.253.40	A	mail.idp.com
192.132.253.41	A+PTR	chinacollectnow-sftp.idp.com
192.132.253.41	A+PTR	hub.idp.com
192.132.253.41	PTR	ielts-sftp.idp.com
192.132.253.42	PTR	idpeducation.ca
192.132.253.42	PTR	idpturkey.com
192.132.253.42	PTR	ieltslaos.com
192.132.253.46	A	bandscore.ielts.org
192.132.253.47	A+PTR	my-ci.ieltsessentials.com
192.132.253.47	PTR	my-preprod.ieltsessentials.com
192.132.253.47	PTR	publications.ieltsessentials.com
192.132.253.48	A+PTR	ieltsbooking.idp.com
192.132.253.49	PTR	*.idpapps.com
192.132.253.53	A+PTR	cbr-isa03.idp.com
192.132.253.58	PTR	cbr-mon01.idp.com
192.132.253.60	PTR	sitecore.idp.com
192.132.253.60	PTR	www.sitecore.idp.com
192.132.253.129	A+PTR	gw.idp.com
192.132.253.205	A+PTR	ns02.idp.com
192.132.253.205	A	ns2.idp.com
192.132.253.206	A+PTR	ns03.idp.com
192.132.253.219	A	mail.idp.com
192.132.253.223	PTR	invigilatortraining.idp.com
192.132.253.223	A	idpieltstestcentres.com
192.132.253.223	A	oscarpay.idp.com
192.132.253.225	A	ielts-sftp.idp.com
192.132.253.226	PTR	mail.idp.com
192.132.253.253	A	idpprojects.com