Robtex

Up: 83.139.0.0/16
Can't show all results, try to descend to a more specific CIDR
Down left: 83.139.128.0/18
Down right: 83.139.192.0/18
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
83.139.136.200	A	mailefwel.kompass-tranzits.com
83.139.136.245	A	regisk.net
83.139.173.201	A	mail.zbi2.ru
83.139.173.201	A	mail.zafira.su
83.139.173.201	A	mail.zbi2invest.ru
83.139.182.142	A	deadroot.info
83.139.182.142	A	mx.deadroot.info
83.139.186.160	A	machineintelligence.ru
83.139.192.10	A	agata.agactel.it
83.139.192.131	PTR	host131-192.pool83139.agactel.it
83.139.192.131	A	fm01.agactel.it
83.139.192.132	A	fl01.agactel.it
83.139.192.155	A	nodea.agactel.it
83.139.192.156	A	nodeb.agactel.it
83.139.194.70	A	service.netandwork.net
83.139.194.74	A	mx.netandwork.net
83.139.194.79	A	www.cipagres.it
83.139.194.79	A	cnare.it
83.139.194.130	PTR	host130-194-pool83139-netandwork.agactel.it
83.139.194.130	A	www.flacer.com
83.139.194.130	A	flacer.com
83.139.195.34	A	mail02.genovaretigas.it
83.139.195.34	A	mail02.irenmercato.it
83.139.195.34	A	mail02.gisig.it
83.139.196.18	A	mail.reggiochildren.it
83.139.196.131	PTR	mail.actre.it
83.139.196.131	A	mail.til.it
83.139.196.131	A	mail.am.re.it
83.139.197.75	A	mail.filcar.eu
83.139.197.75	A	mail.filcar.es
83.139.197.90	A	srv90.datachannel.it
83.139.197.92	A	srv92.datachannel.it
83.139.199.13	PTR	pp-mpls-casina.agactel.it
83.139.200.3	PTR	host3-200.pool83139.agactel.it
83.139.200.128	PTR	host128-200.pool83139-lugagnano.agactel.it
83.139.201.2	PTR	host2-201-ipo01pal01-pool83139.agactel.it
83.139.203.1	PTR	d07-ipo01pal04.agactel.it
83.139.206.0	PTR	host0-206.pool83139-pal27.agactel.it
83.139.206.3	PTR	host3-206.pool83139-pal27.agactel.it
83.139.206.131	PTR	host131-206.pool83139.agactel.it
83.139.208.0	PTR	host0-208.pool83139.agactel.it
83.139.208.2	PTR	host2-208.pool83139.agactel.it
83.139.208.4	A	www.asmn.re.it
83.139.208.6	A	ess01.meadinformatica.it
83.139.208.6	A	ess.meadinformatica.it
83.139.208.6	A	mail.ctmgroup.it
83.139.208.7	A	ess.meadinformatica.it
83.139.208.128	PTR	host128-208.pool83139.agactel.it
83.139.209.21	A	mail.contabstudio.it
83.139.209.48	A	mail3.carpenfer.it
83.139.209.48	A	mail2.carpenfer.it
83.139.209.73	A	mobilemail.azetalub.com
83.139.216.2	PTR	host2-216.pool83139-quesse.agactel.it
83.139.216.3	PTR	host3-216.pool83139-quesse.agactel.it
83.139.217.131	PTR	host131-217.pool83139-quesse.agactel.it
83.139.248.1	PTR	host1-248.pool83139-ltt.agactel.it