Robtex

Up: 91.228.28.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 91.228.30.0/24
Down right: 91.228.31.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
91.228.30.7	A+PTR	diskus-telecom.ru
91.228.30.7	A+PTR	dt54.ru
91.228.30.7	A+PTR	www.diskus-telecom.ru
91.228.30.8	A+PTR	ns1.dt54.ru
91.228.30.42	A	91-228-30-42.dt54.ru
91.228.30.99	PTR	91-228-30-99.dt54.ru
91.228.30.116	A+PTR	91-228-30-116.dt54.ru
91.228.31.124	A+PTR	91-228-31-124.dt54.ru
91.228.31.144	A+PTR	91-228-31-144.dt54.ru
91.228.31.155	A+PTR	91-228-31-155.dt54.ru
91.228.31.178	A	91-228-31-178.dt54.ru
91.228.31.187	A+PTR	91-228-31-187.dt54.ru
91.228.31.188	A+PTR	91-228-31-188.dt54.ru
91.228.31.255	A+PTR	91-228-31-255.dt54.ru