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: Taipei

Region: Taipei City

Country: Taiwan, China

Internet Service Provider: Chunghwa Telecom Co. Ltd.

Hostname: unknown

Organization: Data Communication Business Group

Usage Type: unknown

Comments:
Type Details Datetime
attackbots
Jun 15 18:08:43 ms-srv sshd[14723]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=211.21.154.4
Jun 15 18:08:44 ms-srv sshd[14723]: Failed password for invalid user alex from 211.21.154.4 port 37150 ssh2
2020-02-16 02:01:45
attackbotsspam
Jul 14 14:47:05 lnxded64 sshd[15309]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=211.21.154.4
2019-07-14 23:08:12
attackbotsspam
Jul 14 11:31:16 lnxded64 sshd[31104]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=211.21.154.4
Jul 14 11:31:17 lnxded64 sshd[31104]: Failed password for invalid user gitolite from 211.21.154.4 port 31900 ssh2
Jul 14 11:41:15 lnxded64 sshd[1388]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=211.21.154.4
2019-07-14 17:43:33
attack
2019-07-12T20:03:33.771922abusebot-8.cloudsearch.cf sshd\[29015\]: Invalid user fa from 211.21.154.4 port 59543
2019-07-13 08:10:14
attack
2019-07-12T15:43:47.261716abusebot-8.cloudsearch.cf sshd\[27915\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=211-21-154-4.hinet-ip.hinet.net  user=ftp
2019-07-12 23:44:18
Comments on same subnet:
No discussion about this subnet yet..
Whois info:
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Dig info:

; <<>> DiG 9.10.3-P4-Ubuntu <<>> 211.21.154.4
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 4552
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

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

;; AUTHORITY SECTION:
.			3600	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2019041500 1800 900 604800 86400

;; Query time: 2 msec
;; SERVER: 67.207.67.3#53(67.207.67.3)
;; WHEN: Tue Apr 16 00:34:00 +08 2019
;; MSG SIZE  rcvd: 116

Host info
4.154.21.211.in-addr.arpa domain name pointer 211-21-154-4.HINET-IP.hinet.net.
Nslookup info:
Server:		67.207.67.3
Address:	67.207.67.3#53

Non-authoritative answer:
4.154.21.211.in-addr.arpa	name = 211-21-154-4.HINET-IP.hinet.net.

Authoritative answers can be found from:

Related IP info:
Related comments:
IP Type Details Datetime
189.125.102.208 attackspambots
Sep 10 09:32:12 l02a sshd[21168]: Invalid user upload from 189.125.102.208
Sep 10 09:32:12 l02a sshd[21168]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=189.125.102.208 
Sep 10 09:32:12 l02a sshd[21168]: Invalid user upload from 189.125.102.208
Sep 10 09:32:14 l02a sshd[21168]: Failed password for invalid user upload from 189.125.102.208 port 45121 ssh2
2020-09-10 17:59:08
147.139.176.137 attack
2020-09-09T22:10:37.0698281495-001 sshd[52854]: Invalid user zhangy from 147.139.176.137 port 42630
2020-09-09T22:10:39.0480051495-001 sshd[52854]: Failed password for invalid user zhangy from 147.139.176.137 port 42630 ssh2
2020-09-09T22:12:03.4434031495-001 sshd[52934]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=147.139.176.137  user=root
2020-09-09T22:12:05.5557771495-001 sshd[52934]: Failed password for root from 147.139.176.137 port 57756 ssh2
2020-09-09T22:13:22.8929181495-001 sshd[52982]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=147.139.176.137  user=root
2020-09-09T22:13:25.5178161495-001 sshd[52982]: Failed password for root from 147.139.176.137 port 44652 ssh2
...
2020-09-10 17:49:32
190.198.14.90 attackbots
20/9/9@12:48:30: FAIL: Alarm-Network address from=190.198.14.90
20/9/9@12:48:30: FAIL: Alarm-Network address from=190.198.14.90
...
2020-09-10 17:58:50
164.132.54.215 attack
Sep 10 11:38:16 minden010 sshd[856]: Failed password for root from 164.132.54.215 port 58750 ssh2
Sep 10 11:41:39 minden010 sshd[2362]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=164.132.54.215
Sep 10 11:41:42 minden010 sshd[2362]: Failed password for invalid user public from 164.132.54.215 port 35268 ssh2
...
2020-09-10 17:57:03
119.157.109.51 attack
Attempts against non-existent wp-login
2020-09-10 17:53:53
190.197.14.65 attackspambots
190.197.14.65 - - \[09/Sep/2020:18:48:05 +0200\] "POST /xmlrpc.php HTTP/1.0" 200 858 "-" "Mozilla/4.0 \(compatible\; MSIE 6.0\; Windows NT 5.0\)"
190.197.14.65 - - \[09/Sep/2020:18:49:05 +0200\] "POST /xmlrpc.php HTTP/1.0" 200 858 "-" "Mozilla/4.0 \(compatible\; MSIE 6.0\; Windows NT 5.0\)"
190.197.14.65 - - \[09/Sep/2020:18:49:05 +0200\] "POST /xmlrpc.php HTTP/1.0" 200 858 "-" "Mozilla/4.0 \(compatible\; MSIE 6.0\; Windows NT 5.0\)"
2020-09-10 17:43:08
221.213.40.114 attackspam
Persistent port scanning [22 denied]
2020-09-10 17:36:45
77.247.178.140 attackspambots
[2020-09-10 05:25:34] NOTICE[1239][C-00000ada] chan_sip.c: Call from '' (77.247.178.140:62334) to extension '011442037693601' rejected because extension not found in context 'public'.
[2020-09-10 05:25:34] SECURITY[1264] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-10T05:25:34.249-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="011442037693601",SessionID="0x7f4d4804ac88",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/77.247.178.140/62334",ACLName="no_extension_match"
[2020-09-10 05:25:39] NOTICE[1239][C-00000adb] chan_sip.c: Call from '' (77.247.178.140:58361) to extension '9011442037693601' rejected because extension not found in context 'public'.
[2020-09-10 05:25:39] SECURITY[1264] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-09-10T05:25:39.644-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="9011442037693601",SessionID="0x7f4d48058968",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4
...
2020-09-10 17:38:31
185.220.101.203 attack
2020-09-10T10:31:16+0200 Failed SSH Authentication/Brute Force Attack.(Server 2)
2020-09-10 18:09:53
157.245.243.14 attackspam
157.245.243.14 - - \[10/Sep/2020:08:01:11 +0200\] "POST /wp-login.php HTTP/1.0" 200 3535 "-" "Mozilla/5.0 \(X11\; Ubuntu\; Linux x86_64\; rv:62.0\) Gecko/20100101 Firefox/62.0"
157.245.243.14 - - \[10/Sep/2020:08:01:14 +0200\] "POST /wp-login.php HTTP/1.0" 200 3489 "-" "Mozilla/5.0 \(X11\; Ubuntu\; Linux x86_64\; rv:62.0\) Gecko/20100101 Firefox/62.0"
157.245.243.14 - - \[10/Sep/2020:08:01:15 +0200\] "POST /xmlrpc.php HTTP/1.0" 200 778 "-" "Mozilla/5.0 \(X11\; Ubuntu\; Linux x86_64\; rv:62.0\) Gecko/20100101 Firefox/62.0"
2020-09-10 18:10:32
89.248.168.108 attackspam
POP3
2020-09-10 17:40:43
94.43.81.75 attackbots
Icarus honeypot on github
2020-09-10 17:42:00
111.231.87.209 attack
Sep 10 11:56:40 mout sshd[22585]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=111.231.87.209  user=root
Sep 10 11:56:41 mout sshd[22585]: Failed password for root from 111.231.87.209 port 51162 ssh2
Sep 10 11:56:42 mout sshd[22585]: Disconnected from authenticating user root 111.231.87.209 port 51162 [preauth]
2020-09-10 18:10:50
156.96.44.214 attackspambots
Brute forcing email accounts
2020-09-10 17:37:10
120.92.164.193 attackbots
Sep 10 04:18:26 prox sshd[1433]: Failed password for root from 120.92.164.193 port 43710 ssh2
2020-09-10 18:13:11

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