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: Germany

Internet Service Provider: Grabow & Jakob

Hostname: unknown

Organization: unknown

Usage Type: Data Center/Web Hosting/Transit

Comments:
Type Details Datetime
attack
May 12 14:07:33 our-server-hostname postfix/smtpd[5840]: connect from unknown[5.9.168.114]
May 12 14:07:35 our-server-hostname postfix/smtpd[5840]: NOQUEUE: reject: RCPT from unknown[5.9.168.114]: 504 5.5.2 : Helo command rejected: need fully-qualified hostname; from=x@x helo=
May 12 14:07:36 our-server-hostname postfix/smtpd[5840]: lost connection after RCPT from unknown[5.9.168.114]
May 12 14:07:36 our-server-hostname postfix/smtpd[5840]: disconnect from unknown[5.9.168.114]
May 12 14:07:57 our-server-hostname postfix/smtpd[5634]: connect from unknown[5.9.168.114]
May 12 14:07:59 our-server-hostname postfix/smtpd[5634]: NOQUEUE: reject: RCPT from unknown[5.9.168.114]: 504 5.5.2 : Helo command rejected: need fully-qualified hostname; from=x@x helo=
May 12 14:08:00 our-server-hostname postfix/smtpd[5634]: lost connection after RCPT from unknown[5.9.168.114]
May 12 14:08:00 our-server-hostname postfix/smtpd[5634]: disconnect from unknown[5.9.168.1........
-------------------------------
2020-05-14 22:28:00
Comments on same subnet:
No discussion about this subnet yet..
Whois info:
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Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 5.9.168.114
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 22690
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

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

;; AUTHORITY SECTION:
.			421	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2020051400 1800 900 604800 86400

;; Query time: 97 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Thu May 14 22:27:51 CST 2020
;; MSG SIZE  rcvd: 115
Host info
114.168.9.5.in-addr.arpa domain name pointer static.114.168.9.5.clients.your-server.de.
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

Non-authoritative answer:
114.168.9.5.in-addr.arpa	name = static.114.168.9.5.clients.your-server.de.

Authoritative answers can be found from:
Related IP info:
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