Robtex

Up: 194.102.0.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 194.102.0.0/20
Down right: 194.102.16.0/20

IP	Type	Hostname
194.102.13.98	A+PTR	mailhost.nsh.bt.com
194.102.15.8	PTR	ns1.julianj.com
194.102.15.74	PTR	cimsite.co.uk
194.102.15.74	A	mail.cimsite.com
194.102.15.224	A	sjpc.co.uk
194.102.15.246	A	btredcare.co.uk
194.102.20.171	PTR	www.btsextant.bt.com
194.102.20.171	A	mailhost.btsextant.bt.com
194.102.25.211	PTR	vas211
194.102.27.164	A	map2.emse.bt.com
194.102.29.184	A	mail.btconnectdemo.com
194.102.29.184	A	mail.btbusinessemail.com