Robtex

Up: 208.80.40.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 208.80.40.0/23
Down right: 208.80.42.0/23

IP	Type	Hostname
208.80.43.134	A	mx10.transcomus.com
208.80.43.149	A	mx01.transcomus.com
208.80.43.150	A	ldap01.transcomus.com
208.80.43.150	A	ns1.transcomus.com
208.80.43.151	A	ns2.transcomus.com
208.80.43.152	A	mbox02.transcomus.com
208.80.43.155	PTR	ibm.ameliowave.com
208.80.43.155	A	ameliowave.com
208.80.43.155	A	athoia.com
208.80.43.243	A	knowledgebysourcecomm.com