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 <<>> 104.21.81.197
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 39670
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.81.197.			IN	A

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

;; Query time: 57 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 03:02:29 CST 2022
;; MSG SIZE  rcvd: 106
Host info
Host 197.81.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 197.81.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
134.209.236.191 attackspam
$f2bV_matches
2020-08-08 05:13:17
61.136.226.86 attack
Aug  7 22:27:41 mout sshd[5583]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=61.136.226.86  user=root
Aug  7 22:27:44 mout sshd[5583]: Failed password for root from 61.136.226.86 port 46460 ssh2
2020-08-08 05:23:31
142.4.14.247 attackspambots
142.4.14.247 - - [07/Aug/2020:21:27:26 +0100] "POST /wp-login.php HTTP/1.1" 200 1973 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
142.4.14.247 - - [07/Aug/2020:21:27:30 +0100] "POST /wp-login.php HTTP/1.1" 200 1954 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
142.4.14.247 - - [07/Aug/2020:21:27:33 +0100] "POST /wp-login.php HTTP/1.1" 200 1953 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
...
2020-08-08 05:18:34
51.15.179.65 attackspambots
Aug  4 03:20:05 pl3server sshd[10642]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.15.179.65  user=r.r
Aug  4 03:20:07 pl3server sshd[10642]: Failed password for r.r from 51.15.179.65 port 42758 ssh2
Aug  4 03:20:07 pl3server sshd[10642]: Received disconnect from 51.15.179.65 port 42758:11: Bye Bye [preauth]
Aug  4 03:20:07 pl3server sshd[10642]: Disconnected from 51.15.179.65 port 42758 [preauth]
Aug  4 03:31:23 pl3server sshd[21599]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.15.179.65  user=r.r
Aug  4 03:31:25 pl3server sshd[21599]: Failed password for r.r from 51.15.179.65 port 43990 ssh2
Aug  4 03:31:25 pl3server sshd[21599]: Received disconnect from 51.15.179.65 port 43990:11: Bye Bye [preauth]
Aug  4 03:31:25 pl3server sshd[21599]: Disconnected from 51.15.179.65 port 43990 [preauth]
Aug  4 03:37:47 pl3server sshd[27204]: pam_unix(sshd:auth): authentication failure; logn........
-------------------------------
2020-08-08 05:14:05
88.2.219.179 attackspambots
Automatic report - Port Scan Attack
2020-08-08 05:12:52
211.104.171.239 attackspam
Aug  7 22:43:11 ns37 sshd[25512]: Failed password for root from 211.104.171.239 port 56946 ssh2
Aug  7 22:43:11 ns37 sshd[25512]: Failed password for root from 211.104.171.239 port 56946 ssh2
2020-08-08 04:51:34
163.172.93.131 attackspam
Brute-force attempt banned
2020-08-08 04:56:16
167.71.235.173 attackspambots
POST /xmlrpc.php HTTP/1.1
POST /xmlrpc.php HTTP/1.1
POST /xmlrpc.php HTTP/1.1
2020-08-08 05:14:25
106.13.41.87 attack
2020-08-07T22:19:21.685393v22018076590370373 sshd[12093]: Failed password for root from 106.13.41.87 port 49836 ssh2
2020-08-07T22:23:57.334993v22018076590370373 sshd[6127]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.13.41.87  user=root
2020-08-07T22:23:59.729392v22018076590370373 sshd[6127]: Failed password for root from 106.13.41.87 port 55430 ssh2
2020-08-07T22:28:29.786020v22018076590370373 sshd[28201]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.13.41.87  user=root
2020-08-07T22:28:32.186316v22018076590370373 sshd[28201]: Failed password for root from 106.13.41.87 port 32792 ssh2
...
2020-08-08 04:55:28
5.101.107.183 attack
2020-08-07T22:20:27.813607amanda2.illicoweb.com sshd\[28704\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.101.107.183  user=root
2020-08-07T22:20:30.378802amanda2.illicoweb.com sshd\[28704\]: Failed password for root from 5.101.107.183 port 47238 ssh2
2020-08-07T22:25:30.947516amanda2.illicoweb.com sshd\[29707\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.101.107.183  user=root
2020-08-07T22:25:32.439431amanda2.illicoweb.com sshd\[29707\]: Failed password for root from 5.101.107.183 port 50318 ssh2
2020-08-07T22:27:57.922902amanda2.illicoweb.com sshd\[30044\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.101.107.183  user=root
...
2020-08-08 05:15:25
222.186.173.226 attackspambots
Aug  7 23:10:44 pve1 sshd[1755]: Failed password for root from 222.186.173.226 port 17541 ssh2
Aug  7 23:10:49 pve1 sshd[1755]: Failed password for root from 222.186.173.226 port 17541 ssh2
...
2020-08-08 05:12:21
175.118.126.99 attack
Aug  7 22:25:50 ns382633 sshd\[20527\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=175.118.126.99  user=root
Aug  7 22:25:52 ns382633 sshd\[20527\]: Failed password for root from 175.118.126.99 port 28208 ssh2
Aug  7 22:28:13 ns382633 sshd\[20751\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=175.118.126.99  user=root
Aug  7 22:28:15 ns382633 sshd\[20751\]: Failed password for root from 175.118.126.99 port 60840 ssh2
Aug  7 22:29:52 ns382633 sshd\[20853\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=175.118.126.99  user=root
2020-08-08 05:04:15
51.158.98.224 attack
2020-08-07 22:34:20,998 fail2ban.actions: WARNING [ssh] Ban 51.158.98.224
2020-08-08 04:46:54
112.85.42.173 attack
Aug  7 17:55:07 firewall sshd[17442]: Failed password for root from 112.85.42.173 port 52418 ssh2
Aug  7 17:55:09 firewall sshd[17442]: Failed password for root from 112.85.42.173 port 52418 ssh2
Aug  7 17:55:12 firewall sshd[17442]: Failed password for root from 112.85.42.173 port 52418 ssh2
...
2020-08-08 04:58:53
182.61.2.67 attackspambots
Aug  7 21:25:18 rocket sshd[18826]: Failed password for root from 182.61.2.67 port 49198 ssh2
Aug  7 21:27:44 rocket sshd[19092]: Failed password for root from 182.61.2.67 port 56968 ssh2
...
2020-08-08 05:24:02

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