Robtex

Up: 80.252.120.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 80.252.120.0/23
Down right: 80.252.122.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
80.252.120.10	PTR	fido-1.server.fido.net
80.252.120.11	PTR	www.fido.net
80.252.120.12	A	fidonet.mobi
80.252.120.20	PTR	mail.soeasymail.com
80.252.120.24	A	exmail.fido.net
80.252.120.53	PTR	ns0.fidonet.com
80.252.121.3	A	key.server.fido.net
80.252.121.6	PTR	no-dns-yet.fido.net
80.252.121.8	PTR	no-dns-yet.fido.net
80.252.121.10	PTR	psa08.server.fido.net
80.252.121.10	A	literature.org
80.252.121.10	A	pathaan.com
80.252.121.13	A	webmail.fido.net
80.252.121.21	A+PTR	www.fido.net
80.252.121.21	A	www.guard.email
80.252.121.21	A	voip.legal
80.252.121.23	PTR	no-dns-yet.fido.net
80.252.121.27	PTR	no-dns-yet.fido.net
80.252.121.46	PTR	web-1.iob.org
80.252.121.50	PTR	oldpsa.server.fido.net
80.252.121.50	A	psa01.server.fido.net
80.252.121.72	PTR	bu-1.server.fido.net
80.252.121.74	PTR	no-dns-yet.fido.net
80.252.121.84	PTR	www-2.redmail.com
80.252.121.95	PTR	no-dns-yet.fido.net
80.252.121.106	PTR	no-dns-yet.fido.net
80.252.121.107	PTR	freefaxtoemail.co.uk
80.252.121.107	A	mail.freefaxtoemail.co.uk
80.252.121.121	PTR	support.server.fido.net
80.252.121.134	PTR	no-dns-yet.fido.net
80.252.121.137	PTR	no-dns-yet.fido.net
80.252.121.171	PTR	no-dns-yet.fido.net
80.252.121.181	PTR	no-dns-yet.fido.net
80.252.121.183	PTR	no-dns-yet.fido.net
80.252.121.217	PTR	no-dns-yet.fido.net
80.252.121.238	PTR	ut.server.fido.net
80.252.121.239	PTR	no-dns-yet.fido.net
80.252.121.244	PTR	no-dns-yet.fido.net
80.252.121.249	A	psa10.server.fido.net
80.252.121.255	PTR	no-dns-yet.fido.net
80.252.122.0	PTR	no-dns-yet.fido.net
80.252.122.12	PTR	no-dns-yet.fido.net
80.252.122.22	PTR	no-dns-yet.fido.net
80.252.122.42	PTR	no-dns-yet.fido.net
80.252.122.47	PTR	no-dns-yet.fido.net
80.252.122.73	PTR	no-dns-yet.fido.net
80.252.122.75	PTR	no-dns-yet.fido.net
80.252.122.99	PTR	no-dns-yet.fido.net
80.252.122.101	PTR	no-dns-yet.fido.net
80.252.122.104	PTR	no-dns-yet.fido.net
80.252.122.104	A	mail.altwooditservices.co.uk
80.252.122.104	A	altwooditservices.co.uk
80.252.122.135	PTR	no-dns-yet.fido.net
80.252.122.139	PTR	no-dns-yet.fido.net
80.252.122.153	PTR	no-dns-yet.fido.net
80.252.122.160	A	kateking.net
80.252.122.181	PTR	no-dns-yet.fido.net
80.252.122.183	PTR	no-dns-yet.fido.net
80.252.122.199	PTR	no-dns-yet.fido.net
80.252.122.228	PTR	no-dns-yet.fido.net
80.252.122.232	PTR	no-dns-yet.fido.net
80.252.122.242	PTR	no-dns-yet.fido.net
80.252.122.255	PTR	no-dns-yet.fido.net
80.252.123.0	PTR	no-dns-yet.fido.net
80.252.123.20	PTR	no-dns-yet.fido.net
80.252.123.31	PTR	no-dns-yet.fido.net
80.252.123.58	PTR	no-dns-yet.fido.net
80.252.123.93	PTR	no-dns-yet.fido.net
80.252.123.97	PTR	no-dns-yet.fido.net
80.252.123.105	PTR	no-dns-yet.fido.net
80.252.123.134	PTR	no-dns-yet.fido.net
80.252.123.135	PTR	blockddos.info
80.252.123.135	PTR	blockdos.info
80.252.123.135	PTR	stopddos.info
80.252.123.137	PTR	no-dns-yet.fido.net
80.252.123.153	PTR	no-dns-yet.fido.net
80.252.123.163	PTR	no-dns-yet.fido.net
80.252.123.207	PTR	no-dns-yet.fido.net
80.252.123.252	PTR	no-dns-yet.fido.net
80.252.123.254	PTR	no-dns-yet.fido.net
80.252.123.255	PTR	no-dns-yet.fido.net