Robtex

Up: 81.28.128.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 81.28.128.0/22
Down right: 81.28.132.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
81.28.128.1	A	host1-128-28-81.hiway.at
81.28.128.34	A+PTR	dns.hiway.at
81.28.128.35	A+PTR	hades.hiway.at
81.28.128.36	A	mailserver.hiway.at
81.28.128.36	A	mailserver2.bruckmur.co.at
81.28.128.39	A	smtp.8121.at
81.28.128.39	A	smtp.hiway.at
81.28.128.41	A+PTR	smtp.hiway.at
81.28.128.41	A	smtp.bruckmur.co.at
81.28.128.41	A	smtp.8121.at
81.28.128.44	A	proxy.tsk.at
81.28.128.50	A	host50-128-28-81.hiway.at
81.28.128.52	A	dns2.hiway.at
81.28.128.55	A	kerberos.hiway.at
81.28.128.76	A	host76-128-28-81.hiway.at
81.28.128.89	A	host89-128-28-81.hiway.at
81.28.128.171	A+PTR	host171-128-28-81.hiway.at
81.28.128.250	A	host250-128-28-81.hiway.at
81.28.129.1	A	host1-129-28-81.hiway.at
81.28.129.249	A+PTR	host249-129-28-81.hiway.at
81.28.129.252	A	host252-129-28-81.hiway.at
81.28.130.128	A+PTR	host128-130-28-81.hiway.at
81.28.130.157	A	host157-130-28-81.hiway.at
81.28.130.161	A+PTR	host161-130-28-81.hiway.at
81.28.130.187	A+PTR	host187-130-28-81.hiway.at
81.28.130.190	A	host190-130-28-81.hiway.at
81.28.131.49	A+PTR	host49-131-28-81.hiway.at
81.28.131.51	PTR	host51-131-28-81.hiway.at
81.28.131.51	A	horus.ckuweb.net
81.28.131.51	A	ckuweb.net
81.28.131.156	A	host156-131-28-81.hiway.at
81.28.131.161	A	host161-131-28-81.hiway.at
81.28.131.191	A	host191-131-28-81.hiway.at
81.28.131.194	A	host194-131-28-81.hiway.at
81.28.131.220	A	host220-131-28-81.hiway.at
81.28.131.252	A	host252-131-28-81.hiway.at
81.28.132.115	A	host115-132-28-81.hiway.at
81.28.132.212	A	host212-132-28-81.hiway.at
81.28.133.1	PTR	host1-133-28-81.hiway.at
81.28.133.2	PTR	host2-133-28-81.hiway.at
81.28.133.3	PTR	host3-133-28-81.hiway.at
81.28.133.6	A	host6-133-28-81.hiway.at
81.28.133.8	PTR	host8-133-28-81.hiway.at
81.28.133.9	PTR	host9-133-28-81.hiway.at
81.28.133.10	A+PTR	host10-133-28-81.hiway.at
81.28.133.12	A	host12-133-28-81.hiway.at
81.28.133.16	A+PTR	host16-133-28-81.hiway.at
81.28.133.22	A	host22-133-28-81.hiway.at
81.28.133.34	A	host34-133-28-81.hiway.at
81.28.133.46	A	host46-133-28-81.hiway.at
81.28.133.48	A+PTR	host48-133-28-81.hiway.at
81.28.133.51	A+PTR	host51-133-28-81.hiway.at
81.28.133.54	A	host54-133-28-81.hiway.at
81.28.133.57	A	host57-133-28-81.hiway.at
81.28.133.76	A	host76-133-28-81.hiway.at
81.28.133.79	A	host79-133-28-81.hiway.at
81.28.133.91	A	host91-133-28-81.hiway.at
81.28.133.92	A	host92-133-28-81.hiway.at
81.28.133.96	A+PTR	host96-133-28-81.hiway.at
81.28.133.97	A+PTR	host97-133-28-81.hiway.at
81.28.133.101	A	host101-133-28-81.hiway.at
81.28.133.103	A	host103-133-28-81.hiway.at
81.28.133.107	A+PTR	host107-133-28-81.hiway.at
81.28.133.110	A	host110-133-28-81.hiway.at
81.28.133.124	A	host124-133-28-81.hiway.at
81.28.133.126	A	host126-133-28-81.hiway.at
81.28.133.134	A	host134-133-28-81.hiway.at
81.28.133.138	A+PTR	host138-133-28-81.hiway.at
81.28.133.148	A	host148-133-28-81.hiway.at
81.28.133.156	A	host156-133-28-81.hiway.at
81.28.133.167	A	host167-133-28-81.hiway.at
81.28.133.174	A	host174-133-28-81.hiway.at
81.28.133.176	A	host176-133-28-81.hiway.at
81.28.133.179	A+PTR	host179-133-28-81.hiway.at
81.28.133.186	A+PTR	host186-133-28-81.hiway.at
81.28.133.200	A	host200-133-28-81.hiway.at
81.28.133.203	A+PTR	host203-133-28-81.hiway.at
81.28.133.207	A	host207-133-28-81.hiway.at
81.28.133.209	A	host209-133-28-81.hiway.at
81.28.133.213	A	host213-133-28-81.hiway.at
81.28.133.215	A	host215-133-28-81.hiway.at
81.28.133.216	A+PTR	host216-133-28-81.hiway.at
81.28.133.235	PTR	host235-133-28-81.hiway.at
81.28.133.237	A	host237-133-28-81.hiway.at
81.28.133.245	A	host245-133-28-81.hiway.at
81.28.133.250	A+PTR	host250-133-28-81.hiway.at
81.28.133.253	A	host253-133-28-81.hiway.at
81.28.133.254	A	host254-133-28-81.hiway.at
81.28.134.57	PTR	host57-134-28-81.hiway.at
81.28.135.57	A	host57-135-28-81.hiway.at
81.28.135.66	A	host66-135-28-81.hiway.at
81.28.135.91	PTR	host91-135-28-81.hiway.at
81.28.135.91	A	brandner.cc
81.28.135.91	A	alex.brandner.cc
81.28.135.100	A	host100-135-28-81.hiway.at
81.28.135.122	A	host122-135-28-81.hiway.at
81.28.135.221	A	host221-135-28-81.hiway.at