Robtex

Up: 180.211.128.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 180.211.128.0/22
Down right: 180.211.132.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
180.211.129.46	A	email.btcl.gov.bd
180.211.129.50	A+PTR	mail.btcl.com.bd
180.211.129.59	A+PTR	mail.btcl.net.bd
180.211.129.59	A+PTR	mail.btcl.com.bd
180.211.129.59	A+PTR	mail.btcl.gov.bd
180.211.129.61	PTR	mail.btcl.com.bd