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: United States of America (the)

Internet Service Provider: unknown

Hostname: unknown

Organization: unknown

Usage Type: unknown

Comments:
No discussion about this IP yet. Click above link to make one.
Comments on same subnet:
No discussion about this subnet yet..
Whois info:
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Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 21.231.81.158
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 8715
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;21.231.81.158.			IN	A

;; AUTHORITY SECTION:
.			30	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2025012301 1800 900 604800 86400

;; Query time: 8 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Jan 24 03:50:06 CST 2025
;; MSG SIZE  rcvd: 106
Host info
Host 158.81.231.21.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 158.81.231.21.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
118.25.133.121 attackbots
Jun 12 14:06:06 mail sshd\[24009\]: Invalid user liumeiyun from 118.25.133.121
Jun 12 14:06:06 mail sshd\[24009\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=118.25.133.121
Jun 12 14:06:07 mail sshd\[24009\]: Failed password for invalid user liumeiyun from 118.25.133.121 port 57876 ssh2
...
2020-06-12 23:18:38
118.25.47.27 attack
Jun 12 15:29:21 vps687878 sshd\[17955\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=118.25.47.27  user=root
Jun 12 15:29:23 vps687878 sshd\[17955\]: Failed password for root from 118.25.47.27 port 33422 ssh2
Jun 12 15:32:07 vps687878 sshd\[18380\]: Invalid user batuhan from 118.25.47.27 port 34970
Jun 12 15:32:07 vps687878 sshd\[18380\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=118.25.47.27
Jun 12 15:32:09 vps687878 sshd\[18380\]: Failed password for invalid user batuhan from 118.25.47.27 port 34970 ssh2
...
2020-06-12 23:34:53
113.141.166.40 attackbots
"fail2ban match"
2020-06-12 23:00:54
173.67.48.130 attack
Jun 12 16:47:29 Invalid user fctr from 173.67.48.130 port 37589
2020-06-12 23:33:50
222.186.30.218 attackbotsspam
2020-06-12T08:32:43.987855homeassistant sshd[3266]: Failed password for root from 222.186.30.218 port 41936 ssh2
2020-06-12T15:16:06.675051homeassistant sshd[11437]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.30.218  user=root
...
2020-06-12 23:20:02
37.187.100.50 attackspam
Jun 12 14:06:25 amit sshd\[29479\]: Invalid user ubnt from 37.187.100.50
Jun 12 14:06:25 amit sshd\[29479\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=37.187.100.50
Jun 12 14:06:27 amit sshd\[29479\]: Failed password for invalid user ubnt from 37.187.100.50 port 33432 ssh2
...
2020-06-12 22:57:47
81.40.55.56 attackspam
Jun 12 16:52:58 OPSO sshd\[7315\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=81.40.55.56  user=root
Jun 12 16:53:01 OPSO sshd\[7315\]: Failed password for root from 81.40.55.56 port 51232 ssh2
Jun 12 16:56:32 OPSO sshd\[8168\]: Invalid user pj from 81.40.55.56 port 54058
Jun 12 16:56:32 OPSO sshd\[8168\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=81.40.55.56
Jun 12 16:56:34 OPSO sshd\[8168\]: Failed password for invalid user pj from 81.40.55.56 port 54058 ssh2
2020-06-12 23:05:06
14.231.29.124 attackspambots
12-6-2020 14:05:59	Unauthorized connection attempt (Brute-Force).
12-6-2020 14:05:59	Connection from IP address: 14.231.29.124 on port: 465


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=14.231.29.124
2020-06-12 23:32:41
106.207.253.21 attack
06/12/2020-08:36:57.814472 106.207.253.21 Protocol: 6 ET SCAN Suspicious inbound to MSSQL port 1433
2020-06-12 23:38:16
46.38.145.6 attackbots
Jun 12 17:19:48 relay postfix/smtpd\[16691\]: warning: unknown\[46.38.145.6\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jun 12 17:19:49 relay postfix/smtpd\[323\]: warning: unknown\[46.38.145.6\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jun 12 17:21:20 relay postfix/smtpd\[16586\]: warning: unknown\[46.38.145.6\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jun 12 17:21:25 relay postfix/smtpd\[9753\]: warning: unknown\[46.38.145.6\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jun 12 17:22:53 relay postfix/smtpd\[16691\]: warning: unknown\[46.38.145.6\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
...
2020-06-12 23:23:01
45.141.84.44 attack
Port scan on 7 port(s): 7978 8572 9006 9081 9186 9269 9848
2020-06-12 23:06:09
107.170.192.131 attackbotsspam
Jun 12 16:38:51 vmi345603 sshd[2676]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=107.170.192.131
Jun 12 16:38:52 vmi345603 sshd[2676]: Failed password for invalid user admin from 107.170.192.131 port 40894 ssh2
...
2020-06-12 23:35:15
188.166.230.236 attackspambots
Jun 12 14:05:55  sshd\[12750\]: User root from 188.166.230.236 not allowed because not listed in AllowUsersJun 12 14:05:57  sshd\[12750\]: Failed password for invalid user root from 188.166.230.236 port 40172 ssh2
...
2020-06-12 23:30:45
183.89.237.80 attack
Unauthorized connection attempt from IP address 183.89.237.80 on port 465
2020-06-12 22:59:34
113.173.165.86 attack
Unauthorized connection attempt from IP address 113.173.165.86 on port 587
2020-06-12 23:28:15

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