Robtex

Up: 72.255.56.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 72.255.56.0/23
Down right: 72.255.58.0/23

IP	Type	Hostname
72.255.56.22	A	www.e.fbr.gov.pk
72.255.56.22	A	e.fbr.gov.pk
72.255.56.24	A	paysys.fbr.gov.pk
72.255.56.32	A	fbr.gov.pk
72.255.56.34	A	e.srb.gos.pk
72.255.56.44	A	ims.fbr.gov.pk
72.255.56.46	A	pral.com.pk
72.255.56.47	A	mail.fbr.gov.pk
72.255.56.48	A+PTR	cas2.fbr.gov.pk
72.255.56.48	A	mail.fbr.gov.pk
72.255.56.62	PTR	mail.pra.punjab.gov.pk
72.255.56.62	A	mail.e.pra.punjab.gov.pk
72.255.56.66	PTR	fbrmail.com
72.255.56.66	A	ns1.fbrmail.com
72.255.56.116	A	crm.fbr.gov.pk
72.255.56.189	A	ns2.fbrdns.com
72.255.57.211	PTR	72-255-57-211.client.stsn.net
72.255.57.236	PTR	72-255-57-236.client.stsn.net