Robtex

Up: 172.252.0.0/15
Can't show all results, try to descend to a more specific CIDR
Down left: 172.253.0.0/17
Down right: 172.253.128.0/17

IP	Type	Hostname
172.253.21.207	PTR	207.21.253.172.bc.googleusercontent.com
172.253.56.127	A	alt6.stun.l.google.com
172.253.58.128	A	gcs-us-00001.content-storage-download.googleapis.com
172.253.61.73	A	fa-in-f73.1e100.net
172.253.61.87	A	fa-in-f87.1e100.net
172.253.61.136	A	fa-in-f136.1e100.net
172.253.62.94	A	www.google.com.ps
172.253.62.99	A	partner-client.l.google.com
172.253.62.103	A	partner-client.l.google.com
172.253.62.104	A	partner-client.l.google.com
172.253.62.105	A	partner-client.l.google.com
172.253.62.106	A	partner-client.l.google.com
172.253.62.141	A	sprintkit.withgoogle.com
172.253.62.147	A	partner-client.l.google.com
172.253.62.188	A	bc-in-f188.1e100.net
172.253.112.26	A	alt22011.aspmx.l.google.com
172.253.112.94	A	alt10.gstatic.com
172.253.112.120	A	alt10.gstatic.com
172.253.112.127	A	stun2.l.google.com
172.253.112.127	A	alt2.stun.l.google.com
172.253.113.14	A	alt4.gmr-smtp-in.l.google.com
172.253.113.26	A	alt21.aspmx.l.google.com
172.253.113.27	A+PTR	ma-in-f27.1e100.net
172.253.115.108	A	gmail-imap.l.google.com
172.253.115.109	A	gmail-imap.l.google.com
172.253.115.188	A	mobile-gtalk.l.google.com
172.253.117.26	A	joshuarayteasdale.com
172.253.118.121	A	otak-pulsa.com
172.253.119.27	PTR	jt-in-f27.1e100.net
172.253.120.26	A	alt120.aspmx.l.google.com
172.253.120.26	A	alt42.aspmx.l.google.com
172.253.120.92	A	tez.google.com
172.253.120.128	A	content-storage-upload.googleapis.com
172.253.122.128	A	mcp-cdn-foxlocal-wfld.storage.googleapis.com
172.253.122.141	A	streetart.withgoogle.com
172.253.122.153	A	www.8080-dot-4201224-dot-devshell.appspot.com
172.253.122.153	A	wholesalediscountoutletshoes.com--showsiteinf.appspot.com--www.showsiteinf.appspot.com
172.253.124.26	A	ys-in-f26.1e100.net
172.253.124.94	PTR	ys-in-f94.1e100.net
172.253.125.188	PTR	nn-in-f188.1e100.net