Robtex

Up: 37.235.40.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 37.235.40.0/24
Down right: 37.235.41.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
37.235.40.35	A+PTR	ns2.calloo.net
37.235.40.36	A+PTR	ns1.calloo.net
37.235.40.37	PTR	no-dns-yet.calloo.net
37.235.40.38	A+PTR	mail.calloo.co.uk
37.235.40.38	A	imap.calloo.co.uk
37.235.40.53	PTR	billy.calloo.net
37.235.40.63	PTR	no-dns-yet.calloo.net
37.235.40.64	PTR	not-yet-assigned.calloo.net
37.235.40.65	PTR	not-yet-assigned.calloo.net
37.235.40.67	A+PTR	ns0.calloo.net
37.235.40.70	PTR	not-yet-assigned.calloo.net
37.235.40.70	A	www.mathsmutt.co.uk
37.235.40.70	A	www.calloo.co.uk
37.235.40.73	PTR	not-yet-assigned.calloo.net
37.235.40.75	PTR	not-yet-assigned.calloo.net
37.235.40.78	PTR	not-yet-assigned.calloo.net
37.235.40.84	A+PTR	mailgate.calloo.co.uk
37.235.40.84	A	mail2.calloo.co.uk
37.235.40.87	PTR	not-yet-assigned.calloo.net
37.235.40.90	PTR	not-yet-assigned.calloo.net
37.235.40.91	PTR	not-yet-assigned.calloo.net
37.235.40.94	PTR	not-yet-assigned.calloo.net
37.235.40.96	PTR	not-yet-assigned.calloo.net
37.235.40.98	PTR	not-yet-assigned.calloo.net
37.235.40.99	PTR	not-yet-assigned.calloo.net
37.235.40.106	PTR	not-yet-assigned.calloo.net
37.235.40.123	PTR	not-yet-assigned.calloo.net
37.235.40.124	PTR	not-yet-assigned.calloo.net
37.235.40.125	PTR	not-yet-assigned.calloo.net
37.235.40.128	PTR	not-yet-assigned.calloo.net
37.235.40.131	PTR	not-yet-assigned.calloo.net
37.235.40.133	PTR	not-yet-assigned.calloo.net
37.235.40.134	PTR	not-yet-assigned.calloo.net
37.235.40.139	PTR	not-yet-assigned.calloo.net
37.235.40.140	PTR	not-yet-assigned.calloo.net
37.235.40.142	PTR	not-yet-assigned.calloo.net
37.235.40.143	PTR	not-yet-assigned.calloo.net
37.235.40.145	PTR	not-yet-assigned.calloo.net
37.235.40.148	PTR	not-yet-assigned.calloo.net
37.235.40.153	PTR	not-yet-assigned.calloo.net
37.235.40.155	PTR	not-yet-assigned.calloo.net
37.235.40.159	PTR	not-yet-assigned.calloo.net
37.235.40.160	PTR	not-yet-assigned.calloo.net
37.235.40.169	PTR	not-yet-assigned.calloo.net
37.235.40.171	PTR	not-yet-assigned.calloo.net
37.235.40.173	PTR	not-yet-assigned.calloo.net
37.235.40.174	PTR	not-yet-assigned.calloo.net
37.235.40.176	PTR	not-yet-assigned.calloo.net
37.235.40.178	PTR	not-yet-assigned.calloo.net
37.235.40.182	PTR	not-yet-assigned.calloo.net
37.235.40.186	PTR	not-yet-assigned.calloo.net
37.235.40.188	PTR	not-yet-assigned.calloo.net
37.235.40.190	PTR	not-yet-assigned.calloo.net
37.235.40.192	PTR	not-yet-assigned.calloo.net
37.235.40.193	PTR	not-yet-assigned.calloo.net
37.235.40.196	PTR	not-yet-assigned.calloo.net
37.235.40.213	PTR	not-yet-assigned.calloo.net
37.235.40.215	PTR	not-yet-assigned.calloo.net
37.235.40.216	PTR	not-yet-assigned.calloo.net
37.235.40.220	PTR	not-yet-assigned.calloo.net
37.235.40.224	PTR	not-yet-assigned.calloo.net
37.235.40.225	PTR	not-yet-assigned.calloo.net
37.235.40.227	PTR	not-yet-assigned.calloo.net
37.235.40.229	PTR	not-yet-assigned.calloo.net
37.235.40.230	PTR	not-yet-assigned.calloo.net
37.235.40.231	PTR	not-yet-assigned.calloo.net
37.235.40.235	PTR	not-yet-assigned.calloo.net
37.235.40.241	PTR	not-yet-assigned.calloo.net
37.235.40.242	PTR	not-yet-assigned.calloo.net
37.235.40.243	PTR	not-yet-assigned.calloo.net
37.235.40.255	PTR	not-yet-assigned.calloo.net
37.235.41.65	PTR	no-dns-yet.calloo.net
37.235.41.82	A	mail1.espl-regulatory.com
37.235.41.129	PTR	not-yet-assigned.calloo.net
37.235.41.131	PTR	not-yet-assigned.calloo.net
37.235.41.139	PTR	not-yet-assigned.calloo.net
37.235.41.143	PTR	not-yet-assigned.calloo.net
37.235.41.145	A+PTR	mail.shetlandamenity.org
37.235.41.145	A	mail.sumburghhead.com
37.235.41.145	A	mail.shetlandmuseumandarchives.org.uk
37.235.41.146	PTR	not-yet-assigned.calloo.net
37.235.41.147	PTR	not-yet-assigned.calloo.net
37.235.41.149	PTR	not-yet-assigned.calloo.net
37.235.41.153	PTR	not-yet-assigned.calloo.net
37.235.41.155	PTR	not-yet-assigned.calloo.net
37.235.41.157	PTR	not-yet-assigned.calloo.net
37.235.41.159	PTR	not-yet-assigned.calloo.net
37.235.41.160	PTR	not-yet-assigned.calloo.net
37.235.41.161	PTR	not-yet-assigned.calloo.net
37.235.41.162	PTR	not-yet-assigned.calloo.net
37.235.41.163	PTR	not-yet-assigned.calloo.net
37.235.41.165	PTR	not-yet-assigned.calloo.net
37.235.41.167	PTR	not-yet-assigned.calloo.net
37.235.41.168	PTR	not-yet-assigned.calloo.net
37.235.41.169	PTR	not-yet-assigned.calloo.net
37.235.41.173	PTR	not-yet-assigned.calloo.net
37.235.41.174	PTR	not-yet-assigned.calloo.net
37.235.41.175	PTR	not-yet-assigned.calloo.net
37.235.41.177	PTR	not-yet-assigned.calloo.net
37.235.41.180	A	mail.kildrummy.com
37.235.41.181	PTR	not-yet-assigned.calloo.net
37.235.41.185	A	www.its-online.co.uk
37.235.41.185	A	its-online.co.uk
37.235.41.186	PTR	not-yet-assigned.calloo.net
37.235.41.187	PTR	not-yet-assigned.calloo.net
37.235.41.192	PTR	not-yet-assigned.calloo.net
37.235.41.193	PTR	not-yet-assigned.calloo.net
37.235.41.195	PTR	not-yet-assigned.calloo.net
37.235.41.204	PTR	not-yet-assigned.calloo.net
37.235.41.212	PTR	not-yet-assigned.calloo.net
37.235.41.213	PTR	not-yet-assigned.calloo.net
37.235.41.214	PTR	not-yet-assigned.calloo.net
37.235.41.217	PTR	not-yet-assigned.calloo.net
37.235.41.217	A	ems.bigmick.net
37.235.41.224	PTR	not-yet-assigned.calloo.net
37.235.41.227	PTR	not-yet-assigned.calloo.net
37.235.41.228	PTR	not-yet-assigned.calloo.net
37.235.41.232	PTR	not-yet-assigned.calloo.net
37.235.41.233	PTR	not-yet-assigned.calloo.net
37.235.41.238	PTR	not-yet-assigned.calloo.net
37.235.41.240	PTR	not-yet-assigned.calloo.net
37.235.41.247	PTR	not-yet-assigned.calloo.net
37.235.41.253	PTR	not-yet-assigned.calloo.net
37.235.41.254	PTR	not-yet-assigned.calloo.net
37.235.41.255	PTR	not-yet-assigned.calloo.net