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: Spain

Internet Service Provider: Telefonica de Espana Sau

Hostname: unknown

Organization: unknown

Usage Type: unknown

Comments:
Type Details Datetime
attack
Lines containing failures of 81.36.9.94
Jan 28 15:38:43 s390x sshd[881]: Connection from 81.36.9.94 port 50398 on 10.42.2.18 port 22
Jan 28 15:38:43 s390x sshd[880]: Connection from 81.36.9.94 port 50392 on 10.42.2.18 port 22
Jan 28 15:38:45 s390x sshd[881]: Invalid user pi from 81.36.9.94 port 50398
Jan 28 15:38:45 s390x sshd[880]: Invalid user pi from 81.36.9.94 port 50392
Jan 28 15:38:45 s390x sshd[881]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=81.36.9.94
Jan 28 15:38:45 s390x sshd[880]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=81.36.9.94
Jan 28 15:38:47 s390x sshd[881]: Failed password for invalid user pi from 81.36.9.94 port 50398 ssh2
Jan 28 15:38:47 s390x sshd[880]: Failed password for invalid user pi from 81.36.9.94 port 50392 ssh2


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=81.36.9.94
2020-02-03 10:26:28
Comments on same subnet:
No discussion about this subnet yet..
Whois info:
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Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 81.36.9.94
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 60889
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

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

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

;; Query time: 98 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Mon Feb 03 10:26:24 CST 2020
;; MSG SIZE  rcvd: 114
Host info
94.9.36.81.in-addr.arpa domain name pointer 94.red-81-36-9.dynamicip.rima-tde.net.
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

Non-authoritative answer:
94.9.36.81.in-addr.arpa	name = 94.red-81-36-9.dynamicip.rima-tde.net.

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