Robtex

Up: 117.20.16.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 117.20.16.0/22
Down right: 117.20.20.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
117.20.16.18	PTR	tw16-static18.tw1.com
117.20.16.37	A	perfectteeth.co.uk
117.20.16.98	PTR	tw16-static98.tw1.com
117.20.16.115	PTR	mail2.sbp.org.pk
117.20.16.115	A	saveonyourhomepurchase.com
117.20.16.115	A	webmail1.nibaf.gov.pk
117.20.16.121	PTR	tw16-static121.tw1.com
117.20.16.121	A	wrp02.sbp.org.pk
117.20.16.122	PTR	tw16-static122.tw1.com
117.20.16.122	A	apuhf.info
117.20.16.125	A	dag1.sbp.org.pk
117.20.16.130	PTR	tw16-static130.tw1.com
117.20.16.130	A	secure.bankalhabib.com
117.20.16.131	A+PTR	bsf2.bankalhabib.com
117.20.16.131	A	mx-117-20-16-131.bankalhabib.com
117.20.16.137	PTR	tw16-static137.tw1.com
117.20.16.137	A	mail.bankalhabib.com
117.20.16.232	PTR	tw16-static232.tw1.com
117.20.18.56	PTR	tw18-static56.tw1.com
117.20.18.56	A	research.ucp.edu.pk
117.20.18.57	A	admission.ucp.edu.pk
117.20.18.58	PTR	tw18-static58.tw1.com
117.20.18.58	A	online.ucp.edu.pk
117.20.18.146	PTR	tw18-static146.tw1.com
117.20.19.18	PTR	tw19-static18.tw1.com
117.20.19.26	PTR	vpn.aku.edu
117.20.19.27	PTR	av.aku.edu
117.20.19.28	A	twa2.aku.edu
117.20.19.28	A	mail.aku.edu
117.20.19.29	A	twa1.aku.edu
117.20.19.29	A	test1.aku.edu
117.20.19.43	PTR	tw19-static43.tw1.com
117.20.19.45	A	affco.com.pk
117.20.19.55	A	smtp04.bankalhabib.com
117.20.20.34	PTR	tw20-static34.tw1.com
117.20.20.70	A	tfntech.com
117.20.20.70	A	webmail.tfntech.com
117.20.21.26	PTR	tw21-static26.tw1.com
117.20.21.98	PTR	tw21-static98.tw1.com
117.20.21.108	A	portal.ucp.edu.pk
117.20.21.176	PTR	tw21-static176.tw1.com
117.20.21.232	PTR	tw21-static232.tw1.com
117.20.22.1	PTR	tw22-static1.tw1.com
117.20.22.24	PTR	mail.iba.edu.pk
117.20.22.34	PTR	khimail.systemsltd.com
117.20.22.35	PTR	khimail.systemsltd.com
117.20.22.35	A	khi.systemsltd.com
117.20.22.40	PTR	khimail.systemsltd.com
117.20.22.41	PTR	khimail.systemsltd.com
117.20.22.42	PTR	khimail.systemsltd.com
117.20.22.43	PTR	khimail.systemsltd.com
117.20.22.57	PTR	rsh1.js.com
117.20.22.113	A+PTR	mx1.jubileelife.com
117.20.22.113	PTR	mx.njilife.com
117.20.22.113	A	mx1.jubileehealth.com
117.20.22.118	A	mx2.jubileelife.com
117.20.22.122	PTR	tw22-static122.tw1.com
117.20.22.123	A	exchange.alfalahinsurance.com
117.20.22.124	A	mail.alfalahinsurance.com
117.20.22.131	PTR	mail.bop.com.pk
117.20.22.136	PTR	mail.bop.com.pk
117.20.22.137	PTR	mail.bop.com.pk
117.20.22.138	PTR	tw22-static138.tw1.com
117.20.22.171	A	mail.atlashonda.com.pk
117.20.22.171	A	ahlkhi.atlashonda.com.pk
117.20.23.18	PTR	mail.tw1.com
117.20.23.34	A	smtp.tes.com.pk
117.20.23.35	PTR	tw23-static35.tw1.com
117.20.23.35	A	webmail.tw1.com
117.20.23.36	A	p-exg-mhc01.tw1.com
117.20.23.91	PTR	tw23-static91.tw1.com