Robtex

Up: 17.144.0.0/12
Can't show all results, try to descend to a more specific CIDR
Down left: 17.152.0.0/14
Down right: 17.156.0.0/14
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
17.152.16.89	PTR	genius3.itunes-bak.apple.com
17.152.16.89	A+PTR	genius3.itunes.apple.com
17.152.16.91	PTR	genius3-download.itunes-bak.apple.com
17.152.16.91	A+PTR	genius3-download.itunes.apple.com
17.152.16.91	A	genius-download.itunes.apple.com.akadns.net
17.152.16.95	A	genius-download.itunes.apple.com.akadns.net
17.152.16.97	A	genius2-upload.itunes.apple.com
17.152.88.54	A	xn--csar-bpa.net
17.152.249.21	A+PTR	zim.apple.com
17.152.249.51	A+PTR	vgr101.apple.com
17.152.249.52	A	vgr102.apple.com
17.152.249.53	A	vgr103.apple.com
17.154.8.20	A	r1s2i2.connectivity.me.com
17.154.8.22	A	r1s2i4.connectivity.me.com
17.154.8.44	A	r1s5i2.connectivity.me.com
17.154.8.52	A	r1s6i2.connectivity.me.com
17.154.64.94	A+PTR	mzsupport.apple.com
17.154.65.1	PTR	ld.itunes.apple.com
17.154.65.1	A	ld-6.itunes-apple.com.akadns.net
17.154.65.1	A	ld-1.itunes.apple.com
17.154.65.2	A	ld-6.itunes-apple.com.akadns.net
17.154.65.2	A	ld-1.itunes.apple.com
17.154.65.2	A	ld-5.itunes.apple.com
17.154.65.3	A	ld-6.itunes-apple.com.akadns.net
17.154.65.3	A	ld-1.itunes.apple.com
17.154.65.3	A	ld-5.itunes.apple.com
17.154.239.13	A	service-nk11-a.ess.apple.com
17.154.239.14	A	service2-nk11-a.ess.apple.com
17.154.239.14	A	service2.ess.apple.com
17.154.239.16	A	service1-nk11-a.ess.apple.com
17.154.239.25	A	service2.ess.apple.com
17.154.239.26	A	service2.ess.apple.com
17.154.239.37	A	service2.ess.apple.com
17.154.239.38	A	service2.ess.apple.com
17.154.239.53	A	service2.ess.apple.com
17.154.239.54	A	service2.ess.apple.com
17.154.239.55	A	service2.ess.apple.com
17.155.4.0	A	gc.apple.com.akadns.net
17.155.4.5	A	ess.apple.com
17.155.5.236	A	commnat-main.gc.apple.com
17.155.5.237	A	commnat-cohort.gc.apple.com
17.155.127.13	A	static-nk11-a.gc.apple.com
17.155.127.23	A	link.gc.apple.com.akadns.net
17.155.127.24	A	link.gc.apple.com.akadns.net
17.155.127.25	A	link.gc.apple.com.akadns.net
17.155.127.26	A	link.gc.apple.com.akadns.net
17.155.127.33	A	link.gc.apple.com.akadns.net
17.155.127.222	A	commnat-nk11.gc.apple.com
17.155.127.223	A	cohort-nk11.gc.apple.com
17.155.160.15	A+PTR	gsp4-ls-nk11.apple.com
17.155.160.16	A	gsp3-2-ls-nk11.apple.com
17.155.160.17	A	gsp3-3-ls-nk11.apple.com
17.155.160.23	A	gsp3-9-ls-nk11.apple.com
17.157.64.66	A	gsa.idms-apple.com.akadns.net
17.157.64.66	A	gsas.idms-apple.com.akadns.net
17.157.96.101	A	developerservices1.origin-apple.com.akadns.net
17.158.8.19	A	nk11-smtp.me.com.akadns.net
17.158.8.19	A	smtp.me.com.akadns.net
17.158.8.35	A	nk11p00mm-mail01.me.com
17.158.8.36	A	nk11p00mm-mail02.me.com
17.158.28.11	A	p04-fmip.me.com.akadns.net
17.158.28.21	A	streams.icloud.com.akadns.net
17.158.28.25	A	p04-keyvalueservice.icloud.com.akadns.net
17.158.28.25	A	keyvalueservice.icloud.com.akadns.net
17.158.28.47	A	p04-keyvalueservice.icloud.com.akadns.net
17.158.28.47	A	keyvalueservice.icloud.com.akadns.net
17.158.36.15	A	p07-iwmb.icloud.com.akadns.net
17.158.36.19	A	p07-iwres.icloud.com.akadns.net
17.158.36.29	A	p07-iworkexportws.icloud.com.akadns.net
17.158.36.36	A	p07-ubiquity.icloud.com
17.158.42.246	A+PTR	nk11p07mm-asmtp001.mac.com
17.158.42.246	A+PTR	nk11p07mm-asmtpout001.mac.com
17.158.42.247	A+PTR	nk11p07mm-asmtp002.mac.com
17.158.42.247	A+PTR	nk11p07mm-asmtpout002.mac.com
17.158.52.1	A	p08-mailws.icloud.com
17.158.52.15	A	p08-iwmb.icloud.com.akadns.net
17.158.52.19	A	p08-iwres.icloud.com.akadns.net
17.158.52.29	A	p08-iworkexportws.icloud.com.akadns.net
17.158.52.53	A	p08-mailws.icloud.com
17.158.58.246	A+PTR	nk11p08mm-asmtp001.mac.com
17.158.58.246	A+PTR	nk11p08mm-asmtpout001.mac.com
17.158.58.247	A+PTR	nk11p08mm-asmtp002.mac.com
17.158.58.247	A+PTR	nk11p08mm-asmtpout002.mac.com
17.158.72.161	A+PTR	nk11p14im-asmtp002.me.com
17.158.88.160	A+PTR	nk11p12im-asmtp001.me.com
17.158.88.161	A+PTR	nk11p12im-asmtp002.me.com
17.158.104.160	A	nk11p16im-asmtp001.me.com
17.158.120.160	A+PTR	nk11p18im-asmtp001.me.com
17.158.156.6	A+PTR	nk-isgisdbaopscenter.apple.com
17.158.160.103	PTR	nk11p00mm-smtpin121.mac.com
17.158.160.103	A	nk11p00mm-smtpin008.mac.com
17.158.160.105	A+PTR	nk11p00mm-smtpin010.mac.com
17.158.160.107	A	nk11p00mm-smtpin012.mac.com
17.158.160.108	A	nk11p00mm-smtpin013.mac.com
17.158.185.185	A+PTR	nk11p10mm-asmtp001.mac.com
17.158.185.186	A+PTR	nk11p10mm-asmtp002.mac.com
17.158.216.160	A+PTR	nk11p20im-asmtp001.me.com
17.158.216.161	A+PTR	nk11p20im-asmtp002.me.com
17.158.232.39	A+PTR	nk11p03mm-asmtpout004.mac.com
17.158.232.39	A+PTR	nk11p03mm-asmtp004.mac.com
17.158.232.236	A+PTR	nk11p03mm-asmtp001.mac.com
17.158.232.236	A+PTR	nk11p03mm-asmtpout001.mac.com
17.158.232.237	PTR	nk11p03mm-asmtp002.mac.com
17.158.232.237	PTR	nk11p03mm-asmtpout002.mac.com
17.158.249.241	A+PTR	gerty.apple.com
17.158.249.244	A+PTR	boomer.apple.com
17.159.8.160	A+PTR	nk11p22im-asmtp001.me.com
17.159.8.161	A+PTR	nk11p22im-asmtp002.me.com
17.159.123.139	A	ns1.ns1.mail.6.umikl.com
17.159.252.148	A	ns1.ns1.6.ewsxz.com