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

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:
b
Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 104.21.58.81
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 3388
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.58.81.			IN	A

;; AUTHORITY SECTION:
.			600	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022021701 1800 900 604800 86400

;; Query time: 77 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 02:39:05 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 81.58.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 81.58.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
85.17.73.232 attackbots
Jun 17 20:24:53 journals sshd\[76174\]: Invalid user stefan from 85.17.73.232
Jun 17 20:24:53 journals sshd\[76174\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=85.17.73.232
Jun 17 20:24:54 journals sshd\[76174\]: Failed password for invalid user stefan from 85.17.73.232 port 39927 ssh2
Jun 17 20:27:59 journals sshd\[76481\]: Invalid user weixin from 85.17.73.232
Jun 17 20:27:59 journals sshd\[76481\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=85.17.73.232
...
2020-06-18 03:12:48
45.55.57.6 attack
Invalid user pfz from 45.55.57.6 port 51370
2020-06-18 02:38:52
35.232.73.166 attack
SSH brute force
2020-06-18 02:57:51
192.3.1.22 attackspam
Jun 17 17:53:05 *** sshd[4538]: Invalid user firewall from 192.3.1.22
2020-06-18 02:44:39
82.165.65.108 attack
Invalid user admin from 82.165.65.108 port 45312
2020-06-18 03:13:48
129.226.174.114 attackbotsspam
Invalid user app from 129.226.174.114 port 42418
2020-06-18 03:07:43
36.110.49.98 attack
Jun 17 18:47:24 ws26vmsma01 sshd[136424]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=36.110.49.98
Jun 17 18:47:26 ws26vmsma01 sshd[136424]: Failed password for invalid user probe from 36.110.49.98 port 4610 ssh2
...
2020-06-18 03:17:45
115.146.121.79 attack
SSH Brute-Force Attack
2020-06-18 03:10:18
158.69.154.64 attack
Invalid user lft from 158.69.154.64 port 44950
2020-06-18 02:47:22
177.103.187.233 attackbots
Invalid user admin from 177.103.187.233 port 59510
2020-06-18 03:03:34
3.91.148.97 attack
Jun 17 19:16:20 pve1 sshd[4009]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=3.91.148.97 
Jun 17 19:16:23 pve1 sshd[4009]: Failed password for invalid user postgres from 3.91.148.97 port 45168 ssh2
...
2020-06-18 02:42:01
183.88.243.254 attackspambots
2020-06-17 x@x


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=183.88.243.254
2020-06-18 02:46:10
129.144.9.93 attack
Invalid user osm from 129.144.9.93 port 47090
2020-06-18 03:08:07
113.132.11.206 attackspam
Lines containing failures of 113.132.11.206
Jun 16 20:33:32 nxxxxxxx sshd[28591]: Invalid user luiz from 113.132.11.206 port 14942
Jun 16 20:33:32 nxxxxxxx sshd[28591]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=113.132.11.206
Jun 16 20:33:34 nxxxxxxx sshd[28591]: Failed password for invalid user luiz from 113.132.11.206 port 14942 ssh2
Jun 16 20:33:35 nxxxxxxx sshd[28591]: Received disconnect from 113.132.11.206 port 14942:11: Bye Bye [preauth]
Jun 16 20:33:35 nxxxxxxx sshd[28591]: Disconnected from invalid user luiz 113.132.11.206 port 14942 [preauth]
Jun 16 20:36:07 nxxxxxxx sshd[29155]: Invalid user nagios from 113.132.11.206 port 15025
Jun 16 20:36:07 nxxxxxxx sshd[29155]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=113.132.11.206


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=113.132.11.206
2020-06-18 03:10:38
37.193.61.38 attackspambots
2020-06-17T18:17:46.303876v22018076590370373 sshd[16006]: Failed password for root from 37.193.61.38 port 36632 ssh2
2020-06-17T18:29:05.960151v22018076590370373 sshd[5050]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=37.193.61.38  user=root
2020-06-17T18:29:08.123955v22018076590370373 sshd[5050]: Failed password for root from 37.193.61.38 port 43454 ssh2
2020-06-17T18:46:04.450069v22018076590370373 sshd[28817]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=37.193.61.38  user=root
2020-06-17T18:46:06.173265v22018076590370373 sshd[28817]: Failed password for root from 37.193.61.38 port 39454 ssh2
...
2020-06-18 02:56:37

Recently Reported IPs

104.21.58.54 104.21.58.79 104.21.58.8 104.21.58.84
104.21.58.82 104.21.7.90 104.21.58.86 104.21.58.9
104.21.58.93 104.21.58.87 104.21.59.106 104.21.58.99
104.21.58.90 104.21.58.98 104.21.59.118 104.21.7.94
104.21.59.107 104.21.59.102 104.21.59.116 104.21.59.121