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: Singapore

Internet Service Provider: Amazon Data Services Singapore

Hostname: unknown

Organization: unknown

Usage Type: Data Center/Web Hosting/Transit

Comments:
Type Details Datetime
attackbotsspam
Lines containing failures of 52.221.207.239
Apr 18 22:14:23 shared05 sshd[26766]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=52.221.207.239  user=r.r
Apr 18 22:14:24 shared05 sshd[26766]: Failed password for r.r from 52.221.207.239 port 44846 ssh2
Apr 18 22:14:24 shared05 sshd[26766]: Received disconnect from 52.221.207.239 port 44846:11: Bye Bye [preauth]
Apr 18 22:14:24 shared05 sshd[26766]: Disconnected from authenticating user r.r 52.221.207.239 port 44846 [preauth]
Apr 18 22:19:44 shared05 sshd[28936]: Invalid user pu from 52.221.207.239 port 41626
Apr 18 22:19:44 shared05 sshd[28936]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=52.221.207.239


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=52.221.207.239
2020-04-19 05:18:44
Comments on same subnet:
No discussion about this subnet yet..
Whois info:
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Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 52.221.207.239
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 21368
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

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

;; AUTHORITY SECTION:
.			585	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2020041801 1800 900 604800 86400

;; Query time: 145 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Sun Apr 19 05:18:40 CST 2020
;; MSG SIZE  rcvd: 118
Host info
239.207.221.52.in-addr.arpa domain name pointer ec2-52-221-207-239.ap-southeast-1.compute.amazonaws.com.
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

Non-authoritative answer:
239.207.221.52.in-addr.arpa	name = ec2-52-221-207-239.ap-southeast-1.compute.amazonaws.com.

Authoritative answers can be found from:
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