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: China

Internet Service Provider: Xiamen Broadband MAN

Hostname: unknown

Organization: unknown

Usage Type: Fixed Line ISP

Comments:
Type Details Datetime
attack
Fail2Ban - SSH Bruteforce Attempt
2020-07-19 21:35:30
attack
Jun 14 01:11:16 vps sshd[420445]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=27.154.55.58
Jun 14 01:11:18 vps sshd[420445]: Failed password for invalid user c from 27.154.55.58 port 53748 ssh2
Jun 14 01:14:06 vps sshd[432022]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=27.154.55.58  user=root
Jun 14 01:14:08 vps sshd[432022]: Failed password for root from 27.154.55.58 port 39942 ssh2
Jun 14 01:17:00 vps sshd[447422]: Invalid user admin from 27.154.55.58 port 54386
...
2020-06-14 08:43:21
attackbotsspam
Jun  5 06:19:14 abendstille sshd\[29822\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=27.154.55.58  user=root
Jun  5 06:19:17 abendstille sshd\[29822\]: Failed password for root from 27.154.55.58 port 36970 ssh2
Jun  5 06:21:44 abendstille sshd\[32045\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=27.154.55.58  user=root
Jun  5 06:21:45 abendstille sshd\[32045\]: Failed password for root from 27.154.55.58 port 39436 ssh2
Jun  5 06:24:03 abendstille sshd\[2052\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=27.154.55.58  user=root
...
2020-06-05 17:57:10
Comments on same subnet:
No discussion about this subnet yet..
Whois info:
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Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 27.154.55.58
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 46912
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

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

;; AUTHORITY SECTION:
.			521	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2020060500 1800 900 604800 86400

;; Query time: 107 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Jun 05 17:57:02 CST 2020
;; MSG SIZE  rcvd: 116
Host info
Host 58.55.154.27.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 58.55.154.27.in-addr.arpa: NXDOMAIN
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