Robtex

Up: 213.210.20.0/24
Can't show all results, try to descend to a more specific CIDR
Down left: 213.210.20.128/26
Down right: 213.210.20.192/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
213.210.20.129	PTR	mailgate.allenconcrete.co.uk
213.210.20.138	A	select-villas.com
213.210.20.138	A	domainproperty.net
213.210.20.138	A	londonbuilders.com
213.210.20.141	PTR	mailgate.gofalathrwsio.org
213.210.20.170	PTR	mail.skara.co.uk
213.210.20.186	PTR	mailgate.dda.co.uk
213.210.20.226	PTR	mailgate.qufab.com
213.210.20.227	PTR	mx1.freedomcoaching.eu
213.210.20.253	PTR	adsl.smsmail.net