Robtex

Up: 123.49.32.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 123.49.34.0/24
Down right: 123.49.35.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
123.49.34.2	PTR	host2.btcl.net.bd
123.49.34.3	PTR	host3.btcl.net.bd
123.49.34.4	A	www.iut-dhaka.edu
123.49.34.4	A	iutoic-dhaka.edu
123.49.34.4	A	web.iut-dhaka.edu
123.49.34.5	PTR	host5.btcl.net.bd
123.49.34.5	A	lib.iutoic-dhaka.edu
123.49.34.6	A	www.iut-dhaka.edu
123.49.34.6	A	dns01.iut-dhaka.edu
123.49.34.6	A	dns01.iutoic-dhaka.edu
123.49.34.8	PTR	mail.iut-dhaka.edu
123.49.34.8	PTR	host8.btcl.net.bd
123.49.34.19	A+PTR	mail.bdrab.com
123.49.34.21	PTR	host21.btcl.net.bd
123.49.34.27	A	ruetm.ruet.ac.bd
123.49.34.29	PTR	host29.btcl.net.bd
123.49.34.32	PTR	host32.btcl.net.bd
123.49.34.67	PTR	host67.btcl.net.bd
123.49.34.70	PTR	ns2.ctgtel.net
123.49.34.71	PTR	mail.ctgtel.net
123.49.34.71	PTR	host71.btcl.net.bd
123.49.34.72	PTR	ns1.ctgtel.net
123.49.34.79	PTR	host79.btcl.net.bd
123.49.34.131	A	webmail.baec.org.bd
123.49.34.132	A	webmail2.baec.org.bd
123.49.34.136	PTR	host136.btcl.net.bd
123.49.34.137	PTR	host137.btcl.net.bd
123.49.34.140	PTR	host140.btcl.net.bd
123.49.34.144	A	ns2.bsmrau.edu.bd
123.49.34.150	A	ns2.bsmrau.edu.bd
123.49.34.150	A	ns2.wapx.biz
123.49.34.150	A	ns1.bsmrau.edu.bd
123.49.34.151	PTR	host151.btcl.net.bd
123.49.34.195	PTR	host195.btcl.net.bd
123.49.35.1	PTR	host1.btcl.net.bd
123.49.35.3	PTR	host3.btcl.net.bd
123.49.35.4	PTR	host4.btcl.net.bd
123.49.35.5	PTR	host5.btcl.net.bd
123.49.35.6	PTR	host6.btcl.net.bd
123.49.35.9	PTR	host9.btcl.net.bd
123.49.35.14	PTR	host14.btcl.net.bd
123.49.35.15	PTR	host15.btcl.net.bd
123.49.35.18	PTR	host18.btcl.net.bd
123.49.35.19	PTR	host19.btcl.net.bd
123.49.35.24	PTR	host24.btcl.net.bd
123.49.35.34	PTR	host34.btcl.net.bd
123.49.35.35	PTR	host35.btcl.net.bd
123.49.35.36	PTR	ns1.bgb.gov.bd
123.49.35.36	PTR	host36.btcl.net.bd
123.49.35.36	A	mail.bgb.gov.bd
123.49.35.40	PTR	host40.btcl.net.bd
123.49.35.43	PTR	host43.btcl.net.bd
123.49.35.65	PTR	host65.btcl.net.bd
123.49.35.66	PTR	host66.btcl.net.bd
123.49.35.67	PTR	host67.btcl.net.bd
123.49.35.69	PTR	host69.btcl.net.bd
123.49.35.69	A	ns2.army.mil.bd
123.49.35.70	PTR	host70.btcl.net.bd
123.49.35.74	PTR	host74.btcl.net.bd
123.49.35.76	PTR	host76.btcl.net.bd
123.49.35.77	PTR	host77.btcl.net.bd
123.49.35.78	PTR	host78.btcl.net.bd
123.49.35.78	A	www.joinbangladesharmy.mil.bd
123.49.35.79	PTR	host79.btcl.net.bd
123.49.35.85	PTR	host85.btcl.net.bd
123.49.35.90	PTR	host90.btcl.net.bd
123.49.35.90	A	weecho.net
123.49.35.93	PTR	host93.btcl.net.bd
123.49.35.100	PTR	host100.btcl.net.bd
123.49.35.101	PTR	host101.btcl.net.bd
123.49.35.131	PTR	host131.btcl.net.bd
123.49.35.132	PTR	host132.btcl.net.bd
123.49.35.136	PTR	host136.btcl.net.bd
123.49.35.137	PTR	host137.btcl.net.bd
123.49.35.140	PTR	host140.btcl.net.bd
123.49.35.141	PTR	ns1.ssf.gov.bd
123.49.35.141	PTR	host141.btcl.net.bd
123.49.35.142	PTR	ns2.ssf.gov.bd
123.49.35.142	PTR	host142.btcl.net.bd
123.49.35.143	PTR	mail.ssf.gov.bd
123.49.35.143	PTR	host143.btcl.net.bd
123.49.35.150	PTR	host150.btcl.net.bd
123.49.35.151	PTR	host151.btcl.net.bd
123.49.35.152	PTR	host152.btcl.net.bd
123.49.35.153	PTR	host153.btcl.net.bd
123.49.35.158	PTR	host158.btcl.net.bd
123.49.35.166	PTR	host166.btcl.net.bd
123.49.35.167	PTR	host167.btcl.net.bd
123.49.35.169	PTR	host169.btcl.net.bd
123.49.35.170	PTR	host170.btcl.net.bd
123.49.35.172	PTR	host172.btcl.net.bd
123.49.35.173	PTR	host173.btcl.net.bd
123.49.35.177	PTR	host177.btcl.net.bd
123.49.35.193	PTR	host193.btcl.net.bd
123.49.35.194	PTR	host194.btcl.net.bd
123.49.35.195	PTR	host195.btcl.net.bd
123.49.35.196	PTR	host196.btcl.net.bd
123.49.35.198	PTR	host198.btcl.net.bd
123.49.35.202	PTR	host202.btcl.net.bd
123.49.35.204	PTR	host204.btcl.net.bd
123.49.35.210	PTR	host210.btcl.net.bd
123.49.35.213	PTR	host213.btcl.net.bd
123.49.35.215	PTR	host215.btcl.net.bd
123.49.35.221	PTR	host221.btcl.net.bd
123.49.35.228	PTR	host228.btcl.net.bd
123.49.35.231	PTR	host231.btcl.net.bd
123.49.35.232	PTR	host232.btcl.net.bd
123.49.35.235	PTR	host235.btcl.net.bd
123.49.35.236	PTR	host236.btcl.net.bd
123.49.35.240	PTR	host240.btcl.net.bd
123.49.35.242	PTR	mail.bgb.gov.bd
123.49.35.242	A+PTR	ns2.bgb.gov.bd
123.49.35.242	PTR	host242.btcl.net.bd
123.49.35.243	PTR	host243.btcl.net.bd
123.49.35.243	A	ns2.bgbsbms.info