Robtex

Up: 72.171.0.0/16
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Down left: 72.171.0.0/18
Down right: 72.171.64.0/18

IP	Type	Hostname
72.171.0.0	PTR	host721710000.direcway.com
72.171.0.1	PTR	host721710010.direcway.com
72.171.0.2	PTR	host721710020.direcway.com
72.171.1.2	PTR	host721710021.direcway.com
72.171.2.0	PTR	host721710002.direcway.com
72.171.4.0	PTR	host721710004.direcway.com
72.171.8.0	PTR	host721710008.direcway.com
72.171.8.2	PTR	host721710028.direcway.com
72.171.14.2	PTR	host7217100214.direcway.com
72.171.18.126	PTR	host721710012618.direcway.com
72.171.20.200	PTR	host721710020020.direcway.com
72.171.21.28	PTR	host72171002821.direcway.com
72.171.24.123	PTR	host721710012324.direcway.com
72.171.27.2	PTR	host7217100227.direcway.com
72.171.33.1	PTR	host7217100133.direcway.com
72.171.36.129	PTR	host721710012936.direcway.com
72.171.48.114	PTR	host721710011448.direcway.com
72.171.48.126	PTR	host721710012648.direcway.com
72.171.50.11	PTR	host72171001150.direcway.com
72.171.108.66	PTR	host721710066108.direcway.com
72.171.115.66	PTR	host721710066115.direcway.com
72.171.124.2	PTR	host72171002124.direcway.com
72.171.124.130	PTR	host7217100130124.direcway.com