Robtex

Up: 17.140.0.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 17.140.0.0/20
Down right: 17.140.16.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
17.140.24.4	A+PTR	pv01sa-c02.siri.apple.com
17.140.24.5	PTR	pv11p01sa.apple.com
17.140.24.5	A	pv01sa.carry-siri-apple.com.akadns.net
17.140.24.6	A+PTR	pv01sa-c01.siri.apple.com
17.140.24.6	A+PTR	pv32p01sa.apple.com
17.140.24.8	PTR	pv01sa-c03.siri.apple.com
17.140.24.241	A+PTR	pv01sa-e05.siri.apple.com
17.140.25.4	PTR	pv31p02sa-x01.apple.com
17.140.25.6	PTR	pv11p02sa.apple.com
17.140.25.6	A+PTR	pv02sa-c01.siri.apple.com
17.140.25.6	A	pv11p02sa-gkq.apple.com
17.140.25.130	A	kryten.apple.com
17.140.25.130	A	origin.kryten-apple.com.akadns.net
17.140.25.130	A	pv11p02sa-p02.kryten-apple.com.akadns.net
17.140.26.4	PTR	seed.siri.apple.com
17.140.27.6	A	seedlab.siri.apple.com
17.140.29.6	A	pv31p08sa.apple.com
17.140.30.5	A	pv31p09sa.guzzoni-apple.com.akadns.net
17.140.30.6	A	pv31p09sa.apple.com