Robtex

Up: 117.20.16.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 117.20.16.0/23
Down right: 117.20.18.0/23
(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
117.20.16.116	PTR	tw16-static116.tw1.com
117.20.16.116	A	globalemail.sbp.org.pk
117.20.16.118	A+PTR	ns0.sbp.org.pk
117.20.16.118	A	ns0.nibaf.gov.pk
117.20.16.119	PTR	tw16-static119.tw1.com
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
117.20.16.124	PTR	tw16-static124.tw1.com
117.20.16.125	PTR	tw16-static125.tw1.com
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
117.20.16.132	PTR	mail.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	PTR	smtp4.aku.edu
117.20.19.28	A	twa2.aku.edu
117.20.19.28	A	mail.aku.edu
117.20.19.29	A+PTR	test1.aku.edu
117.20.19.29	A	twa1.aku.edu
117.20.19.30	PTR	test2.aku.edu
117.20.19.43	PTR	tw19-static43.tw1.com
117.20.19.44	PTR	tw19-static44.tw1.com
117.20.19.45	PTR	tw19-static45.tw1.com
117.20.19.45	A	affco.com.pk
117.20.19.55	A+PTR	smtp04.bankalhabib.com
117.20.19.116	PTR	tw19-static116.tw1.com