Robtex

Up: 72.31.24.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 72.31.24.0/23
Down right: 72.31.26.0/23

IP	Type	Hostname
72.31.24.0	PTR	72-31-24-0.res.bhn.net
72.31.24.114	PTR	72-31-24-114.res.bhn.net
72.31.24.195	PTR	72-31-24-195.res.bhn.net
72.31.24.195	A	ns2.mentz.com
72.31.24.195	A	ns1.mentz.com
72.31.25.18	PTR	72-31-25-18.res.bhn.net
72.31.25.18	A	mail.hamiltonsystems.net
72.31.25.56	A	singireddy.info
72.31.25.56	A	singireddy.me
72.31.25.105	PTR	72-31-25-105.res.bhn.net
72.31.25.136	PTR	72-31-25-136.res.bhn.net
72.31.26.2	A+PTR	72-31-26-2.res.bhn.net
72.31.27.12	A	hotdam.org
72.31.27.204	A	logananteau.net
72.31.27.251	PTR	72-31-27-251.res.bhn.net
72.31.27.255	PTR	72-31-27-255.res.bhn.net