Robtex

Up: 31.209.128.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 31.209.128.0/20
Down right: 31.209.144.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
31.209.128.0	A	0.128.209.31.as43256.net
31.209.128.17	A+PTR	17.128.209.31.as43256.net
31.209.128.148	A+PTR	148.128.209.31.as43256.net
31.209.128.154	A	154.128.209.31.as43256.net
31.209.128.211	A+PTR	211.128.209.31.as43256.net
31.209.129.0	A	0.129.209.31.as43256.net
31.209.129.8	A+PTR	8.129.209.31.as43256.net
31.209.129.10	A+PTR	10.129.209.31.as43256.net
31.209.129.12	A+PTR	12.129.209.31.as43256.net
31.209.129.45	A+PTR	45.129.209.31.as43256.net
31.209.129.61	A+PTR	61.129.209.31.as43256.net
31.209.129.241	A+PTR	nsa1.ldn.as43256.net
31.209.129.241	A	nsa1.gbs.cg
31.209.129.245	PTR	wh1.ldn.as43256.net
31.209.129.245	A	mail.mat.gbs.cd
31.209.129.245	A	mail.gb-solution.cd
31.209.130.0	A	0.130.209.31.as43256.net
31.209.131.0	A	0.131.209.31.as43256.net
31.209.131.41	A+PTR	41.131.209.31.as43256.net
31.209.132.0	A	0.132.209.31.as43256.net
31.209.132.10	A+PTR	10.132.209.31.as43256.net
31.209.136.0	A	0-136-209-31.business.hringdu.is
31.209.136.9	A+PTR	9-136-209-31.business.hringdu.is
31.209.136.9	A	ohara.is
31.209.136.40	PTR	40-136-209-31.business.hringdu.is
31.209.136.40	A	mx2.vu.is
31.209.136.40	A	mail.rafprofun.is
31.209.136.76	PTR	cache.google.com
31.209.136.76	A	r1.sn-igpobq0gpm-g38l.googlevideo.com
31.209.136.98	A+PTR	98-136-209-31.business.hringdu.is
31.209.136.98	A	occ-0-2089-299.1.nflxso.net
31.209.136.102	A+PTR	102-136-209-31.business.hringdu.is
31.209.136.102	A	occ-0-2089-299.1.nflxso.net
31.209.136.139	A	server.oruggafritun.is
31.209.136.150	PTR	150-136-209-31.business.hringdu.is
31.209.136.150	A	www.linethefinewatches.com
31.209.136.150	A	brask.is
31.209.136.238	A	mail.samband.is
31.209.136.238	A	postur.samband.is
31.209.137.5	PTR	5-137-209-31.business.hringdu.is
31.209.137.11	A	de.vivaldi.net
31.209.137.13	A	r2---sn-igpobq0gpm-g38e.googlevideo.com
31.209.137.13	A	mxi-1.vivaldi.net
31.209.137.13	A	r2.sn-igpobq0gpm-g38e.googlevideo.com
31.209.137.45	PTR	cache.google.com
31.209.137.113	PTR	113-137-209-31.business.hringdu.is
31.209.137.113	A	askgudmundur.com
31.209.137.149	A+PTR	149-137-209-31.business.hringdu.is
31.209.137.149	A	e-business.tools
31.209.137.151	PTR	151-137-209-31.business.hringdu.is
31.209.137.151	A	responsiblesurfing.net
31.209.137.151	A	flugmal.is
31.209.137.153	PTR	153-137-209-31.business.hringdu.is
31.209.137.197	A+PTR	197-137-209-31.business.hringdu.is
31.209.137.243	A	nagios.miracle.is
31.209.137.243	A	ddr.miracle.is
31.209.137.246	A	miracle-support.net
31.209.138.169	A	rebbi.runing.com
31.209.138.169	A	runing.com
31.209.138.189	PTR	189-138-209-31.xdsl.hringdu.is
31.209.138.189	A	postur.varmarskoli.is
31.209.138.191	A	garpur.net
31.209.139.0	A	0-139-209-31.xdsl.hringdu.is
31.209.139.88	PTR	88-139-209-31.xdsl.hringdu.is
31.209.139.88	A	siggiwine.com
31.209.139.96	A+PTR	96-139-209-31.xdsl.hringdu.is
31.209.139.96	A	deliceland.com
31.209.139.164	PTR	164-139-209-31.xdsl.hringdu.is
31.209.140.0	A	0-140-209-31.xdsl.hringdu.is
31.209.140.116	PTR	116-140-209-31.xdsl.hringdu.is
31.209.140.135	A+PTR	135-140-209-31.xdsl.hringdu.is
31.209.140.135	A	ljotipollur.com
31.209.141.16	A	16-141-209-31.xdsl.hringdu.is
31.209.141.16	A	skolahysing.com
31.209.141.55	A	icelandmc.com
31.209.141.198	A	advefir.com
31.209.142.97	PTR	97-142-209-31.xdsl.hringdu.is
31.209.143.254	A	130.17.89.in-addr.arpa
31.209.143.254	A	133.17.89.in-addr.arpa
31.209.143.254	A	135.17.89.in-addr.arpa
31.209.144.27	A+PTR	31-209-144-27.dsl.dynamic.simnet.is
31.209.144.28	A+PTR	31-209-144-28.dsl.dynamic.simnet.is
31.209.144.34	A+PTR	31-209-144-34.dsl.dynamic.simnet.is
31.209.144.37	A	31-209-144-37.dsl.dynamic.simnet.is
31.209.144.38	A	31-209-144-38.dsl.dynamic.simnet.is
31.209.144.59	A	31-209-144-59.dsl.dynamic.simnet.is
31.209.145.13	A+PTR	31-209-145-13.dsl.dynamic.simnet.is
31.209.145.120	PTR	31-209-145-120.dsl.dynamic.simnet.is
31.209.147.41	A+PTR	31-209-147-41.dsl.dynamic.simnet.is
31.209.151.251	A+PTR	31-209-151-251.dsl.dynamic.simnet.is
31.209.152.134	PTR	31-209-152-134.dsl.dynamic.simnet.is
31.209.152.244	A+PTR	31-209-152-244.dsl.dynamic.simnet.is
31.209.153.12	PTR	12-153-209-31.fiber.hringdu.is
31.209.153.12	A	31-209-153-12.dsl.dynamic.simnet.is
31.209.154.51	PTR	31-209-154-51.dsl.dynamic.simnet.is
31.209.154.170	PTR	31-209-154-170.dsl.dynamic.simnet.is
31.209.158.140	A	31-209-158-140.dsl.dynamic.simnet.is
31.209.158.170	A	31-209-158-170.dsl.dynamic.simnet.is
31.209.158.230	A	4.robinsonsavary.com