Robtex

Up: 109.224.240.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 109.224.240.0/24
Down right: 109.224.241.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
109.224.240.4	A	asterisk11-7-1.voip.thw.gradwell.net
109.224.240.87	A+PTR	newsip-pbx-6-4.voip.thw.gradwell.net
109.224.240.148	A	asterisk11-5-1.voip.thw.gradwell.net
109.224.240.208	PTR	no-reverse-dns-set.gradwell.com
109.224.240.215	PTR	no-reverse-dns-set.gradwell.com
109.224.240.218	PTR	no-reverse-dns-set.gradwell.com
109.224.240.248	PTR	no-reverse-dns-set.gradwell.com
109.224.241.5	PTR	iax-1-2.voip.thw.gradwell.net
109.224.241.14	PTR	iax-1-11.voip.thw.gradwell.net
109.224.241.20	PTR	iax-2-1.voip.thw.gradwell.net
109.224.241.22	PTR	iax-2-3.voip.thw.gradwell.net
109.224.241.30	PTR	iax-2-11.voip.thw.gradwell.net
109.224.241.32	PTR	iax-2-13.voip.thw.gradwell.net
109.224.241.49	PTR	iax-3-14.voip.thw.gradwell.net
109.224.241.56	A+PTR	iax-4-5.voip.thw.gradwell.net
109.224.241.61	A+PTR	iax-4-10.voip.thw.gradwell.net
109.224.241.62	PTR	iax-4-11.voip.thw.gradwell.net
109.224.241.64	A+PTR	iax-4-13.voip.thw.gradwell.net
109.224.241.75	PTR	no-reverse-dns-set.gradwell.com
109.224.241.90	PTR	no-reverse-dns-set.gradwell.com
109.224.241.98	PTR	no-reverse-dns-set.gradwell.com
109.224.241.112	PTR	no-reverse-dns-set.gradwell.com
109.224.241.119	PTR	no-reverse-dns-set.gradwell.com
109.224.241.122	PTR	no-reverse-dns-set.gradwell.com
109.224.241.123	PTR	no-reverse-dns-set.gradwell.com
109.224.241.131	PTR	no-reverse-dns-set.gradwell.com
109.224.241.133	PTR	no-reverse-dns-set.gradwell.com
109.224.241.134	PTR	no-reverse-dns-set.gradwell.com
109.224.241.139	PTR	no-reverse-dns-set.gradwell.com
109.224.241.141	PTR	no-reverse-dns-set.gradwell.com
109.224.241.157	PTR	no-reverse-dns-set.gradwell.com
109.224.241.160	PTR	no-reverse-dns-set.gradwell.com
109.224.241.179	PTR	no-reverse-dns-set.gradwell.com
109.224.241.180	PTR	no-reverse-dns-set.gradwell.com
109.224.241.203	PTR	no-reverse-dns-set.gradwell.com
109.224.241.207	PTR	no-reverse-dns-set.gradwell.com
109.224.241.209	PTR	no-reverse-dns-set.gradwell.com
109.224.241.220	PTR	no-reverse-dns-set.gradwell.com
109.224.241.223	PTR	no-reverse-dns-set.gradwell.com
109.224.241.231	PTR	no-reverse-dns-set.gradwell.com
109.224.241.254	A+PTR	iax.trunk.voip.thw.gradwell.com
109.224.241.254	A	lon-iax-1.gradwell.net
109.224.241.254	A	iax-lb.gradwell.net