Robtex

Up: 27.54.56.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 27.54.56.0/23
Down right: 27.54.58.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
27.54.56.19	A	mail2.bmtrust.com
27.54.56.20	A+PTR	gateway2.bmtrust.com
27.54.56.45	A	schextmail1.statschippac.com
27.54.56.50	A+PTR	mail.kingkongtraining.com
27.54.56.51	A+PTR	mail.kingkongclasses.com
27.54.56.51	A	kingkongclasses.com
27.54.56.52	A+PTR	mail.perspectiveseminar.com
27.54.56.52	A	perspectiveseminar.com
27.54.56.53	A+PTR	mail.trainingbizpartner.com
27.54.56.53	A	trainingbizpartner.com
27.54.56.54	PTR	mail.oilngasmasterclass.com
27.54.56.55	PTR	mail.virtualtrainingmart.com
27.54.56.56	A+PTR	mail.fdrivenbiz.com
27.54.56.56	A	fdrivenbiz.com
27.54.56.57	A+PTR	mail.idriven-workshop.com
27.54.56.57	A	idriven-workshop.com
27.54.56.58	PTR	mail.international-learnhub.com
27.54.56.59	PTR	mail.corptrendtrain.com
27.54.56.60	A+PTR	mail.businesses-insider.com
27.54.56.60	A	businesses-insider.com
27.54.56.61	A+PTR	mail.businesses-drivenfun.com
27.54.56.61	A	mail.exceedwork.com
27.54.56.62	PTR	mail.learnershubs.com
27.54.56.179	A	mailserver.nation.com.sg
27.54.56.179	A	mail.eazable.com
27.54.56.179	A	mailserver.nation.sg
27.54.56.181	A	masterclean.sg
27.54.56.181	A	nation.sg
27.54.56.181	A	nation.biz
27.54.56.188	A	murakami.com.sg
27.54.56.188	A	webserver1.megalink.com.sg
27.54.56.242	A	thunder2.sicc.com.sg
27.54.56.242	A	mail2.sicc.com.sg
27.54.57.211	A	ns2.simplex.sg
27.54.57.211	A	www.vpn.sg
27.54.57.218	A	sysworz.com
27.54.57.220	A	sdm.sg
27.54.57.222	A	mail.mysimplex.com
27.54.57.222	A	mail.ots.sg