Robtex

Up: 173.213.0.0/17
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Down left: 173.213.0.0/19
Down right: 173.213.32.0/19
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
173.213.0.47	A	trig.email.sonyentertainmentnetwork.com
173.213.0.99	A	a.mx.e.flxprogram.com
173.213.0.99	A	a.mx.newsletter.yoox.cn
173.213.0.99	A	a.mx.e.e-chuckanddons.com
173.213.0.107	PTR	n-ny5p01lvsuba001.cheetahmail.com
173.213.2.9	A	e.thisoldhouse.com
173.213.2.10	A	email.weightwatchers.com
173.213.2.11	A	ninewestoutletmail.com
173.213.2.13	A	email.jackrabbit.com
173.213.2.64	A	ekh.emiratesholidays.com
173.213.2.68	A	edm.jeulia.net
173.213.2.78	A	emailing.bancosantander.es
173.213.2.81	PTR	p1-002081.emailsn.roku.com
173.213.2.81	A	emailsn.roku.com
173.213.2.82	A	emailsn.roku.com
173.213.2.83	A	emailsn.roku.com
173.213.2.84	A	emailsn.roku.com
173.213.2.127	A	promo.newegg.com
173.213.2.128	A+PTR	p1-002128.promo.newegg.com
173.213.2.128	A	promo.newegg.com
173.213.2.132	A+PTR	p1-002132.promo.newegg.com
173.213.2.132	A	promo.newegg.com
173.213.2.135	A+PTR	p1-002135.promo.newegg.com
173.213.2.135	A	promo.newegg.com
173.213.2.137	PTR	p1-002137.promo.newegg.com
173.213.2.137	A	promo.newegg.com
173.213.2.204	A	e.talbots.com
173.213.2.205	A	orders.buysub.com
173.213.2.206	A	orders.buysub.com
173.213.2.236	A	e.flxprogram.com
173.213.2.236	A	p1-002236.e.flxprogram.com
173.213.2.237	A	e.flxprogram.com
173.213.4.16	A	x.email.boden.co.uk
173.213.4.16	A	x.email.bodenusa.com
173.213.4.17	A	fm.info6.citi.com
173.213.4.18	A	x.brookstoneemail.com
173.213.4.64	A	l.e.urbanoutfitters.eu
173.213.4.66	A	l.email.sunseekerresorts.com
173.213.4.72	A	dl.e.freepeople.com
173.213.4.72	A	dl.e.urbanoutfitters.com
173.213.4.132	A	l.m.buschgardens.com
173.213.4.132	A	l.m.seaworld.com
173.213.4.136	A	s.emailsn.roku.com
173.213.4.136	A	l.email1.roku.com
173.213.5.2	A	majoswarth.com
173.213.54.226	A	szyo226.scoreinsightpro.com
173.213.54.227	A	assistcomplete.com
173.213.54.227	A	ntwo227.assistcomplete.com
173.213.54.228	A	whgi228.assistinsight.com