Must be a valid IPv4 or IPv6 ip address, e.g. 127.0.0.1 or 2001:DB8:0:0:8:800:200C:417A
Basic Info

City: unknown

Region: unknown

Country: Italy

Internet Service Provider: Tiscali Italia S.p.A.

Hostname: unknown

Organization: unknown

Usage Type: Fixed Line ISP

Comments:
Type Details Datetime
attackbotsspam
Lines containing failures of 78.15.83.163
Feb  3 00:08:37 ks3370873 sshd[12664]: Invalid user pi from 78.15.83.163 port 34484
Feb  3 00:08:37 ks3370873 sshd[12664]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=78.15.83.163 
Feb  3 00:08:37 ks3370873 sshd[12666]: Invalid user pi from 78.15.83.163 port 34486
Feb  3 00:08:37 ks3370873 sshd[12666]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=78.15.83.163 


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=78.15.83.163
2020-02-03 08:55:00
Comments on same subnet:
No discussion about this subnet yet..
Whois info:
b
Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 78.15.83.163
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 56046
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;78.15.83.163.			IN	A

;; AUTHORITY SECTION:
.			412	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2020020201 1800 900 604800 86400

;; Query time: 104 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Mon Feb 03 08:54:56 CST 2020
;; MSG SIZE  rcvd: 116
Host info
163.83.15.78.in-addr.arpa domain name pointer dynamic-adsl-78-15-83-163.clienti.tiscali.it.
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

Non-authoritative answer:
163.83.15.78.in-addr.arpa	name = dynamic-adsl-78-15-83-163.clienti.tiscali.it.

Authoritative answers can be found from:
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