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:
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Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 104.21.81.137
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 50745
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.81.137.			IN	A

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

;; Query time: 25 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 03:02:06 CST 2022
;; MSG SIZE  rcvd: 106
Host info
Host 137.81.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 137.81.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
174.219.14.57 attackbots
Brute forcing email accounts
2020-06-07 12:56:02
101.71.3.53 attack
$f2bV_matches
2020-06-07 13:00:22
222.186.42.137 attack
Unauthorized connection attempt detected from IP address 222.186.42.137 to port 22
2020-06-07 13:20:25
185.176.27.30 attack
06/07/2020-01:00:13.258545 185.176.27.30 Protocol: 6 ET DROP Dshield Block Listed Source group 1
2020-06-07 13:40:00
185.103.245.18 attack
Automatic report - Port Scan Attack
2020-06-07 13:01:31
45.143.220.114 attackspambots
Automatic report - Brute Force attack using this IP address
2020-06-07 13:25:32
203.86.7.110 attack
Jun  7 05:48:44 h1745522 sshd[5366]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=203.86.7.110  user=root
Jun  7 05:48:45 h1745522 sshd[5366]: Failed password for root from 203.86.7.110 port 46289 ssh2
Jun  7 05:51:08 h1745522 sshd[5463]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=203.86.7.110  user=root
Jun  7 05:51:11 h1745522 sshd[5463]: Failed password for root from 203.86.7.110 port 33960 ssh2
Jun  7 05:53:27 h1745522 sshd[5546]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=203.86.7.110  user=root
Jun  7 05:53:29 h1745522 sshd[5546]: Failed password for root from 203.86.7.110 port 49861 ssh2
Jun  7 05:55:48 h1745522 sshd[5644]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=203.86.7.110  user=root
Jun  7 05:55:50 h1745522 sshd[5644]: Failed password for root from 203.86.7.110 port 37524 ssh2
Jun  7 05:58:12 h174
...
2020-06-07 12:54:05
58.20.129.76 attack
$f2bV_matches
2020-06-07 12:58:24
140.213.54.234 attackbotsspam
1591502250 - 06/07/2020 05:57:30 Host: 140.213.54.234/140.213.54.234 Port: 445 TCP Blocked
2020-06-07 13:24:41
144.172.73.34 attackbotsspam
2020-06-07T06:23:44.532543hz01.yumiweb.com sshd\[9549\]: Invalid user honey from 144.172.73.34 port 39834
2020-06-07T06:23:45.806498hz01.yumiweb.com sshd\[9551\]: Invalid user admin from 144.172.73.34 port 40194
2020-06-07T06:23:49.611808hz01.yumiweb.com sshd\[9557\]: Invalid user admin from 144.172.73.34 port 41222
...
2020-06-07 13:01:17
49.234.98.155 attackbots
2020-06-07T00:52:41.2617371495-001 sshd[2601]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.234.98.155  user=root
2020-06-07T00:52:43.3913901495-001 sshd[2601]: Failed password for root from 49.234.98.155 port 49580 ssh2
2020-06-07T00:55:41.3677791495-001 sshd[2714]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.234.98.155  user=root
2020-06-07T00:55:43.2110791495-001 sshd[2714]: Failed password for root from 49.234.98.155 port 53326 ssh2
2020-06-07T00:58:39.8613771495-001 sshd[2787]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.234.98.155  user=root
2020-06-07T00:58:42.1411981495-001 sshd[2787]: Failed password for root from 49.234.98.155 port 57064 ssh2
...
2020-06-07 13:21:53
106.12.89.173 attack
Jun  7 05:52:58 amit sshd\[12965\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.89.173  user=root
Jun  7 05:52:59 amit sshd\[12965\]: Failed password for root from 106.12.89.173 port 39998 ssh2
Jun  7 05:57:48 amit sshd\[13030\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.89.173  user=root
...
2020-06-07 13:08:45
83.97.20.31 attack
Unauthorized connection attempt detected from IP address 83.97.20.31 to port 7547 [T]
2020-06-07 13:28:36
70.37.77.93 attackbots
Bad user agent
2020-06-07 13:04:27
106.13.172.216 attack
2020-06-07T07:52:22.793301lavrinenko.info sshd[29373]: Failed password for root from 106.13.172.216 port 35784 ssh2
2020-06-07T07:54:11.117924lavrinenko.info sshd[29409]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.13.172.216  user=root
2020-06-07T07:54:13.271437lavrinenko.info sshd[29409]: Failed password for root from 106.13.172.216 port 56054 ssh2
2020-06-07T07:56:01.098275lavrinenko.info sshd[29448]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.13.172.216  user=root
2020-06-07T07:56:02.685832lavrinenko.info sshd[29448]: Failed password for root from 106.13.172.216 port 48090 ssh2
...
2020-06-07 12:59:59

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