Robtex

Up: 17.72.0.0/16
Can't show all results, try to descend to a more specific CIDR
Down left: 17.72.128.0/18
Down right: 17.72.192.0/18

IP	Type	Hostname
17.72.129.33	A+PTR	xvpn.euro.apple.com
17.72.129.33	A+PTR	xvpn1.euro.apple.com
17.72.129.34	A+PTR	xvpn2.euro.apple.com
17.72.129.36	PTR	cvpn.euro.apple.com
17.72.129.37	PTR	svpn-u.euro.apple.com
17.72.133.41	A	ftp-uat.euro.apple.com
17.72.133.47	A	media4r.euro.apple.com
17.72.133.48	A	lists.euro.apple.com
17.72.133.50	A	rma.euro.apple.com
17.72.133.145	A+PTR	email4r.euro.apple.com
17.72.133.147	A+PTR	promo1r.euro.apple.com
17.72.134.71	A	eng2.euro.apple.com
17.72.140.3	A	v140.ie-dmz-sw2.euro.apple.com
17.72.140.54	PTR	emedu.euro.apple.com
17.72.148.11	A+PTR	mail-in1.euro.apple.com
17.72.148.12	A+PTR	mail-in.euro.apple.com
17.72.148.12	A+PTR	mail-in2.euro.apple.com
17.72.148.13	A+PTR	mail-in.euro.apple.com
17.72.148.13	A+PTR	mail-in3.euro.apple.com
17.72.148.195	A+PTR	remoteadvisor2.euro.apple.com
17.72.148.195	A	remoteadvisor2.apple.com
17.72.149.10	A+PTR	attache-ext.euro.apple.com
17.72.149.10	A	attache-emea.apple.com.akadns.net
17.72.151.11	A	ftp.euro.apple.com
17.72.188.15	A+PTR	ir-expe2105.euro.apple.com
17.72.251.23	A+PTR	v251v2.ie-dmz-lb2.euro.apple.com
17.72.251.39	A	mail-out-vip.euro.apple.com
17.72.251.40	A	media.euro.apple.com
17.72.251.41	A	promo.euro.apple.com
17.72.255.12	A	time4.euro.apple.com