Robtex

Up: 78.40.244.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 78.40.244.0/25
Down right: 78.40.244.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
78.40.244.1	PTR	rt.leeds.aql.com
78.40.244.2	PTR	rt1.leeds.aql.com
78.40.244.3	PTR	rt2.leeds.aql.com
78.40.244.4	PTR	unassigned.iccnetworks.com
78.40.244.5	PTR	unassigned.iccnetworks.com
78.40.244.6	A+PTR	um.icc-switch.com
78.40.244.7	PTR	billing.afrikall.net
78.40.244.8	PTR	unassigned.iccnetworks.com
78.40.244.10	PTR	unassigned.iccnetworks.com
78.40.244.12	PTR	unassigned.iccnetworks.com
78.40.244.13	PTR	unassigned.iccnetworks.com
78.40.244.15	PTR	unassigned.iccnetworks.com
78.40.244.15	A	voiponline.co.uk
78.40.244.17	PTR	unassigned.iccnetworks.com
78.40.244.22	PTR	sip1.internettelephonyserviceprovider.net
78.40.244.46	A	slave.icc-porta.com
78.40.244.60	PTR	unassigned.iccnetworks.com
78.40.244.60	A	iccnetworks.com
78.40.244.60	A	managemynumbers.net
78.40.244.63	PTR	unassigned.iccnetworks.com
78.40.244.63	A	internetcallcompany.co.uk
78.40.244.70	PTR	unassigned.iccnetworks.com
78.40.244.70	A	ilaymaden.com
78.40.244.70	A	icc-switch.com
78.40.244.73	A	sip1.simplifiedhostedpbx.co.uk
78.40.244.79	PTR	unassigned.iccnetworks.com
78.40.244.103	PTR	unassigned.iccnetworks.com
78.40.244.103	A	vivphone.com
78.40.244.106	PTR	pb.internettelephonyserviceprovider.net
78.40.244.117	A+PTR	billing.ivoiss.com
78.40.244.119	PTR	unassigned.iccnetworks.com
78.40.244.119	A	voip.svanto.net
78.40.244.123	PTR	unassigned.iccnetworks.com
78.40.244.123	A	www.hermesphone.co.uk
78.40.244.123	A	hermesphone.co.uk
78.40.244.142	A	ravcall.com
78.40.244.145	A	krystalcall.com
78.40.244.170	PTR	unassigned.iccnetworks.com
78.40.244.170	A	tcsg.co
78.40.244.192	PTR	sip1.mediafone.com
78.40.244.192	A	telecalusa.net
78.40.244.192	A	mail.telecalusa.net
78.40.244.211	PTR	sip.clearcallonline.com
78.40.244.211	A	compucall.eu
78.40.244.212	A	um.clearcallonline.com
78.40.244.228	PTR	unassigned.iccnetworks.com
78.40.244.228	A	sip.voyced.eu
78.40.244.230	A	um.intellinet.be
78.40.244.235	A	voip.edotel.nl
78.40.244.236	A+PTR	um.edotel.nl
78.40.244.243	PTR	um1.miso-comms.net
78.40.244.246	A	sip.mezzami.com
78.40.244.250	PTR	unassigned.iccnetworks.com
78.40.244.250	A	yourpasswordrecovery.com
78.40.244.252	A+PTR	sip01.mtsip.nl