Robtex

Up: 112.135.16.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 112.135.20.0/23
Down right: 112.135.22.0/23

IP	Type	Hostname
112.135.20.0	PTR	slt-bb-cust.slt.lk
112.135.20.9	PTR	slt-bb-cust.slt.lk
112.135.20.28	PTR	slt-bb-cust.slt.lk
112.135.20.33	PTR	slt-bb-cust.slt.lk
112.135.20.34	PTR	slt-bb-cust.slt.lk
112.135.20.111	PTR	slt-bb-cust.slt.lk
112.135.20.152	PTR	slt-bb-cust.slt.lk
112.135.20.178	PTR	slt-bb-cust.slt.lk
112.135.20.204	PTR	slt-bb-cust.slt.lk
112.135.20.252	PTR	slt-bb-cust.slt.lk
112.135.21.2	PTR	slt-bb-cust.slt.lk
112.135.21.28	PTR	slt-bb-cust.slt.lk
112.135.21.215	PTR	slt-bb-cust.slt.lk
112.135.22.0	PTR	slt-bb-cust.slt.lk
112.135.22.1	PTR	slt-bb-cust.slt.lk
112.135.22.8	PTR	slt-bb-cust.slt.lk
112.135.22.35	PTR	slt-bb-cust.slt.lk
112.135.22.68	PTR	slt-bb-cust.slt.lk
112.135.22.86	PTR	slt-bb-cust.slt.lk
112.135.22.189	PTR	slt-bb-cust.slt.lk
112.135.22.205	PTR	slt-bb-cust.slt.lk
112.135.22.216	PTR	slt-bb-cust.slt.lk
112.135.22.242	PTR	slt-bb-cust.slt.lk
112.135.23.0	PTR	slt-bb-cust.slt.lk
112.135.23.12	PTR	slt-bb-cust.slt.lk
112.135.23.43	PTR	slt-bb-cust.slt.lk
112.135.23.63	PTR	slt-bb-cust.slt.lk
112.135.23.66	PTR	slt-bb-cust.slt.lk
112.135.23.111	PTR	slt-bb-cust.slt.lk
112.135.23.123	PTR	slt-bb-cust.slt.lk
112.135.23.155	PTR	slt-bb-cust.slt.lk
112.135.23.251	PTR	slt-bb-cust.slt.lk
112.135.23.254	PTR	slt-bb-cust.slt.lk