Robtex

Up: 216.21.208.0/21
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Down left: 216.21.208.0/23
Down right: 216.21.210.0/23

IP	Type	Hostname
216.21.208.2	PTR	mail.lapaz-marketing.com
216.21.208.13	PTR	mail.fdmedia-ns.com
216.21.208.22	A	mailout-208-22.adk-solutions.com
216.21.208.23	A	mailout-208-23.adk-solutions.com
216.21.208.40	A	mailout-208-40.adk-programs.com
216.21.208.99	A	mailout-208-99.gbsmailer.com
216.21.208.106	A	mailout-208-106.iwprograms.com
216.21.208.113	A	mailout-208-113.iwpdaily.com
216.21.208.129	A	mailout-208-129.rd7options.com
216.21.208.132	A	mailout-208-132.rd7options.com
216.21.208.140	A	mailout-208-140.rd7newsletter.com
216.21.208.195	A	mailout-208-195.givebacksearchfinder.com
216.21.208.197	A	mailout-208-197.givebacksearchfinder.com
216.21.208.229	A	mailout-208-229.surveyreviewmail.com
216.21.209.6	A	root.trncsmail.com
216.21.209.120	A	mailout-209-120.bucket-o-fun.com
216.21.210.5	A	mail.savingsmarterns.com
216.21.210.9	PTR	sgadvert.com
216.21.210.158	A	mailout-210-158.ionwatchprime.com
216.21.211.4	PTR	mail.metricsdataoffers.com
216.21.211.21	PTR	mailout-211-21.best-family-fun.com
216.21.211.36	A+PTR	mailout-211-36.awesome-funfamily.com
216.21.211.141	PTR	mailout-211-141.lapazintro.com
216.21.211.161	PTR	mailout-211-161.lapazintro.com