Robtex

Up: 213.243.224.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 213.243.224.0/25
Down right: 213.243.224.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
213.243.224.0	A	0-224-243-213.terrecablate.net
213.243.224.38	A+PTR	38-224-243-213.terrecablate.net
213.243.224.127	A+PTR	127-224-243-213.terrecablate.net
213.243.224.144	PTR	mail.prophydentida.com
213.243.224.144	A	mail.prophymed.it
213.243.224.144	A	mail.prophy.it
213.243.224.233	A+PTR	233-224-243-213.terrecablate.net