Robtex

Up: 83.137.16.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 83.137.24.0/22
Down right: 83.137.28.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
83.137.25.3	A+PTR	pra-cb-br-76-01.nexthop.ch
83.137.25.6	A	mue-wei-as-30-01.nexthop.ch
83.137.25.10	PTR	mue-wei-cr-76-02-te-3-3.nexthop.ch
83.137.25.10	A	mue-wei-cr-76-02-ge-1-1.nexthop.ch
83.137.25.21	A	mue-wei-cr-76-02-ge-1-2.nexthop.ch
83.137.25.166	A+PTR	mail.fcb.ch
83.137.25.166	A	fw2801.fcb.ch
83.137.25.166	A	webmail.fcb.ch
83.137.25.200	PTR	gw.primeo-energie.ch
83.137.25.242	PTR	skan.demarc.nexthop.ch
83.137.25.242	A	smtp.prodigy.ch
83.137.25.242	A	sophos.chileo.ch
83.137.25.245	A	ns1.prodigy.ch
83.137.25.250	A	ns2.chileo.hosting
83.137.25.250	A	gainax.ch
83.137.25.250	A	mail.chileo.ch
83.137.25.251	A	mail.chileo.ch
83.137.26.23	PTR	www.ebm.ch
83.137.26.23	A	ebm-france.fr
83.137.26.23	A	seweb1002.ebm.ch
83.137.26.34	PTR	connect.ebm.ch
83.137.26.38	A	connect.ebm.ch
83.137.26.40	PTR	webmail.ebm.ch
83.137.26.43	A+PTR	mail.ebm.ch
83.137.26.43	A	mail.primeo-energie.ch
83.137.26.44	A+PTR	mail2.ebm.ch
83.137.26.44	A	mail2.primeo-energie.ch
83.137.26.61	A	webmail.ebm.ch
83.137.26.70	A+PTR	mail.nikles.com
83.137.26.81	PTR	10015-i-1026.ebmnet.ch
83.137.26.81	A	blackdiamond.eu
83.137.26.84	A+PTR	mail.blackdiamond.ch
83.137.26.84	A	mail.blackdiamond.eu
83.137.26.92	A+PTR	mail1.blackdiamond.eu
83.137.26.92	A	mail1.blackdiamond.ch
83.137.26.93	A	thebiglepowski.com
83.137.26.93	A	skiblackdiamond.eu
83.137.26.116	PTR	mail.irun.ch
83.137.26.130	A+PTR	mail.alu-laufen.ch
83.137.26.132	A+PTR	mail1.alu-laufen.ch
83.137.27.68	PTR	68-27-137-83.dynip.ebmnet.ch
83.137.28.50	PTR	50-28-137-83.dynip.ebmnet.ch
83.137.28.65	PTR	65-28-137-83.dynip.ebmnet.ch
83.137.28.91	PTR	91-28-137-83.dynip.ebmnet.ch
83.137.28.96	PTR	96-28-137-83.dynip.ebmnet.ch
83.137.28.114	PTR	114-28-137-83.dynip.ebmnet.ch
83.137.28.152	PTR	152-28-137-83.dynip.ebmnet.ch
83.137.28.160	PTR	160-28-137-83.dynip.ebmnet.ch
83.137.28.162	PTR	162-28-137-83.dynip.ebmnet.ch
83.137.28.168	PTR	168-28-137-83.dynip.ebmnet.ch
83.137.28.170	PTR	170-28-137-83.dynip.ebmnet.ch
83.137.28.171	PTR	171-28-137-83.dynip.ebmnet.ch
83.137.28.177	PTR	177-28-137-83.dynip.ebmnet.ch
83.137.28.178	PTR	178-28-137-83.dynip.ebmnet.ch
83.137.28.186	PTR	186-28-137-83.dynip.ebmnet.ch
83.137.28.193	PTR	193-28-137-83.dynip.ebmnet.ch
83.137.28.195	PTR	195-28-137-83.dynip.ebmnet.ch
83.137.28.202	PTR	202-28-137-83.dynip.ebmnet.ch
83.137.28.203	PTR	203-28-137-83.dynip.ebmnet.ch
83.137.28.241	PTR	241-28-137-83.dynip.ebmnet.ch
83.137.28.242	PTR	242-28-137-83.dynip.ebmnet.ch
83.137.28.249	PTR	249-28-137-83.dynip.ebmnet.ch
83.137.28.250	PTR	250-28-137-83.dynip.ebmnet.ch
83.137.29.1	PTR	1-29-137-83.dynip.ebmnet.ch
83.137.29.3	PTR	3-29-137-83.dynip.ebmnet.ch
83.137.29.27	PTR	27-29-137-83.dynip.ebmnet.ch
83.137.29.32	PTR	32-29-137-83.dynip.ebmnet.ch
83.137.29.40	PTR	40-29-137-83.dynip.ebmnet.ch
83.137.29.48	PTR	48-29-137-83.dynip.ebmnet.ch
83.137.29.51	PTR	51-29-137-83.dynip.ebmnet.ch
83.137.29.115	PTR	115-29-137-83.dynip.ebmnet.ch
83.137.29.120	PTR	120-29-137-83.dynip.ebmnet.ch
83.137.29.121	PTR	121-29-137-83.dynip.ebmnet.ch
83.137.29.128	PTR	128-29-137-83.dynip.ebmnet.ch
83.137.29.129	PTR	129-29-137-83.dynip.ebmnet.ch
83.137.29.138	PTR	138-29-137-83.dynip.ebmnet.ch
83.137.29.139	PTR	139-29-137-83.dynip.ebmnet.ch
83.137.29.248	PTR	248-29-137-83.dynip.ebmnet.ch
83.137.30.130	PTR	dns2.ebmnet.ch
83.137.31.21	A	xenia.halimedia.com
83.137.31.35	A	support.clounet.ch
83.137.31.36	A	ftp.clounet.ch
83.137.31.37	A+PTR	mail2.clounet.ch
83.137.31.37	A	mail2.itris-enterprise.ch
83.137.31.114	A	qlb.ch