Robtex

Up: 83.139.194.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 83.139.195.0/25
Down right: 83.139.195.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
83.139.195.7	PTR	mail.emak.it
83.139.195.34	PTR	relay01.gruppoiren.it
83.139.195.34	A	mail02.genovaretigas.it
83.139.195.34	A	mail02.irenmercato.it
83.139.195.40	PTR	host40-195.pool83139-enia.agactel.it
83.139.195.40	A	mail0.tesa.piacenza.it
83.139.195.52	A	posta.gruppoiren.it
83.139.195.53	PTR	mail.gruppoiren.it
83.139.195.53	A	mailrl2.aem.torino.it
83.139.195.53	A	mail.irenambiente.it
83.139.195.109	PTR	host109-195.pool83139-damsistemi.agactel.it
83.139.195.157	PTR	host157-195.pool83139.agactel.it