Robtex

Up: 63.251.72.0/22
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Down left: 63.251.72.0/24
Down right: 63.251.73.0/24

IP	Type	Hostname
63.251.72.40	PTR	mx3-acs.40.entrustedmail.net
63.251.72.40	A	mta-5.emmta.net
63.251.72.40	A	mta-7.emmta.net
63.251.72.41	PTR	mx3-acs.41.entrustedmail.net
63.251.72.41	A	mta-3.emmta.net
63.251.72.42	A	mta-7.entrustedmail.net
63.251.72.43	PTR	mx3-acs.43.entrustedmail.net
63.251.72.43	A	mta-5.emmta.net
63.251.72.43	A	mta-7.emmta.net
63.251.72.44	PTR	mx3-acs.44.entrustedmail.net
63.251.72.44	A	mta-3.emmta.net
63.251.72.50	A	mta-gw-acs-001.entrustedmail.net
63.251.72.60	A	encrypt.entrustedmail.net
63.251.72.61	A	encrypt.entrustedmail.net
63.251.72.61	A	encrypt.entrustedmail.com
63.251.72.62	A	encrypt.entrustedmail.net
63.251.72.62	A	encrypt.entrustedmail.com
63.251.72.65	A	encrypt-10.entrustedmail.net
63.251.72.66	A	encrypt-10.entrustedmail.net
63.251.72.67	A	encrypt-10.entrustedmail.net
63.251.72.137	A	tas-browserbar.wireless.att.com
63.251.72.137	A	tas-browserbar.skyfire.com
63.251.72.139	A	apps-browserbar.skyfire.com
63.251.72.142	A+PTR	mx142.acs113.entrustedmail.net
63.251.72.142	A	tas2-browserbar.skyfire.com
63.251.72.142	A	tas2-browserbar.wireless.att.com
63.251.72.144	A	mx1.entrustedmail.net
63.251.72.144	A	mx1.entrustedmail.com
63.251.72.144	A	ata-3.emmta.net
63.251.72.145	PTR	in3.entrustedmail.net
63.251.72.145	A	mta-02.wmsassociates-com.entrustedmail.net
63.251.72.200	A+PTR	mta-gw-acs-001.entrustedmail.net
63.251.72.200	A	mta-01.cjs-securities-com.entrustedmail.net
63.251.72.200	A	mta-01.fentingoldman-com.entrustedmail.net