Robtex

Up: 213.137.72.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 213.137.72.0/24
Down right: 213.137.73.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
213.137.72.6	PTR	nysymspam.deltathree.com
213.137.72.10	A	hostmaster.newd3.com
213.137.72.10	A	broadbandphone.com
213.137.72.10	A	phone-to-phone.com
213.137.72.15	A	www.icallhere.com
213.137.72.15	A	icallhere.com
213.137.72.17	A	dialerpcphone.com
213.137.72.18	A	www.pc-to-phone.com
213.137.72.18	A	pc2phone.com
213.137.72.34	A	www.joip.com
213.137.72.34	A	www.enjoip.com
213.137.72.46	A	sattelecomusa.com
213.137.72.64	A	mobilevoipapplication.com
213.137.72.64	A	joipmobiledialer.com
213.137.72.64	A	cheapmobilecalls.us
213.137.72.94	A	go2call.com
213.137.72.137	A	acnmobileworld.ca
213.137.72.160	A	mx2.iconnecthere.com
213.137.72.160	A	mx2.deltathree.com
213.137.72.165	A	ccrecharge.com
213.137.72.165	A	mx2.acnmobileworld.com
213.137.72.181	A	www.yor.net
213.137.72.181	A	yor.net
213.137.72.181	A	voice.yor.net
213.137.72.190	A	acnview.com
213.137.72.190	A	acnmobileworld.com
213.137.72.190	A	www.acnmobileworld.com
213.137.72.200	A	www.go2call.com
213.137.72.200	A	www.deltathree.com
213.137.72.200	A	deltathree.com
213.137.72.213	A	aaatsdigital.com
213.137.72.222	A	members.livecalling.com
213.137.72.222	A	dialer.deltathree.com
213.137.73.10	A	ns2.pc2telephone.com
213.137.73.65	A	net-analyzer.deltathree.com
213.137.73.107	A	nyae-73-107.deltathree.com
213.137.73.140	A	natrelay.deltathree.com
213.137.73.140	A	proxy.joip.com
213.137.73.140	A	sipalg.go2call.com
213.137.73.153	A	exch.deltathree.com
213.137.73.253	A	mx.icallhere.com
213.137.73.253	A	mx.pc2phone.com
213.137.73.253	A	mx.dialerpcphone.com
213.137.73.254	A	ns.deltathree.com
213.137.73.254	A	italkhere.com
213.137.73.254	A	ns2.newd3.com