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: None

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 <<>> 104.21.57.223
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 22555
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.57.223.			IN	A

;; AUTHORITY SECTION:
.			539	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022021700 1800 900 604800 86400

;; Query time: 60 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 00:33:28 CST 2022
;; MSG SIZE  rcvd: 106
Host info
Host 223.57.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 223.57.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
66.249.66.80 attackspam
Automatic report - Banned IP Access
2020-08-04 18:54:52
106.13.201.158 attack
" "
2020-08-04 18:53:51
40.125.74.18 attackbots
Aug  4 05:27:17 mail sshd\[22790\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=40.125.74.18  user=root
...
2020-08-04 18:41:07
206.189.3.176 attackspam
2020-08-04T11:28:43.829741n23.at sshd[1932708]: Failed password for root from 206.189.3.176 port 54150 ssh2
2020-08-04T11:32:55.099586n23.at sshd[1936417]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=206.189.3.176  user=root
2020-08-04T11:32:56.979612n23.at sshd[1936417]: Failed password for root from 206.189.3.176 port 37232 ssh2
...
2020-08-04 18:51:00
185.204.3.36 attackspambots
Aug  4 11:27:25 db sshd[2145]: User root from 185.204.3.36 not allowed because none of user's groups are listed in AllowGroups
...
2020-08-04 18:33:48
120.34.165.120 attackspambots
Jul 31 19:11:43 xxxxxxx4 sshd[6183]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=120.34.165.120  user=r.r
Jul 31 19:11:44 xxxxxxx4 sshd[6183]: Failed password for r.r from 120.34.165.120 port 1656 ssh2
Jul 31 19:25:05 xxxxxxx4 sshd[7797]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=120.34.165.120  user=r.r
Jul 31 19:25:07 xxxxxxx4 sshd[7797]: Failed password for r.r from 120.34.165.120 port 1520 ssh2
Jul 31 19:27:54 xxxxxxx4 sshd[8660]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=120.34.165.120  user=r.r
Jul 31 19:27:57 xxxxxxx4 sshd[8660]: Failed password for r.r from 120.34.165.120 port 4530 ssh2
Jul 31 19:33:35 xxxxxxx4 sshd[9304]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=120.34.165.120  user=r.r
Jul 31 19:33:37 xxxxxxx4 sshd[9304]: Failed password for r.r from 120.34.165.120 port 3244 ssh2
J........
------------------------------
2020-08-04 18:35:18
175.24.98.39 attackspam
Aug  4 00:11:20 web1 sshd\[25769\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=175.24.98.39  user=root
Aug  4 00:11:23 web1 sshd\[25769\]: Failed password for root from 175.24.98.39 port 60874 ssh2
Aug  4 00:13:57 web1 sshd\[25963\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=175.24.98.39  user=root
Aug  4 00:14:00 web1 sshd\[25963\]: Failed password for root from 175.24.98.39 port 59946 ssh2
Aug  4 00:16:37 web1 sshd\[26164\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=175.24.98.39  user=root
2020-08-04 18:26:10
149.202.59.123 attackspam
149.202.59.123 - - [04/Aug/2020:10:26:32 +0100] "POST /xmlrpc.php HTTP/1.1" 403 219 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
149.202.59.123 - - [04/Aug/2020:10:27:48 +0100] "POST /wp-login.php HTTP/1.1" 200 1923 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
149.202.59.123 - - [04/Aug/2020:10:27:48 +0100] "POST /xmlrpc.php HTTP/1.1" 403 219 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
...
2020-08-04 18:18:39
89.21.77.158 attackspam
89.21.77.158 - - [04/Aug/2020:10:27:40 +0100] "POST /wp-login.php HTTP/1.1" 302 5 "http://labradorfeed.com/wp-login.php" "Mozilla/5.0 (Windows NT 6.1; rv:60.0) Gecko/20100101 Firefox/60.0"
89.21.77.158 - - [04/Aug/2020:10:27:41 +0100] "POST /wp-login.php HTTP/1.1" 302 5 "http://labradorfeed.com/wp-login.php" "Mozilla/5.0 (Windows NT 6.1; rv:60.0) Gecko/20100101 Firefox/60.0"
89.21.77.158 - - [04/Aug/2020:10:27:42 +0100] "POST /wp-login.php HTTP/1.1" 302 0 "http://labradorfeed.com/wp-login.php" "Mozilla/5.0 (Windows NT 6.1; rv:60.0) Gecko/20100101 Firefox/60.0"
...
2020-08-04 18:25:04
192.241.221.169 attack
Lines containing failures of 192.241.221.169
2020-08-04 11:20:46 SMTP protocol synchronization error (input sent whostnamehout wahostnameing for greeting): rejected connection from H=[192.241.221.169] input="EHLO zg-0708a-126
"


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=192.241.221.169
2020-08-04 18:42:40
111.161.74.117 attackbots
$f2bV_matches
2020-08-04 18:29:37
87.251.74.59 attackspambots
Aug  4 12:16:26 debian-2gb-nbg1-2 kernel: \[18794653.037780\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:0e:18:f4:d2:74:7f:6e:37:e3:08:00 SRC=87.251.74.59 DST=195.201.40.59 LEN=40 TOS=0x00 PREC=0x00 TTL=245 ID=12066 PROTO=TCP SPT=52720 DPT=5456 WINDOW=1024 RES=0x00 SYN URGP=0
2020-08-04 18:20:48
36.75.225.43 attack
Aug  4 05:51:47 mail sshd\[61815\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=36.75.225.43  user=root
...
2020-08-04 18:57:41
46.101.103.207 attackspambots
Aug  4 07:27:33 vps46666688 sshd[6182]: Failed password for root from 46.101.103.207 port 57654 ssh2
...
2020-08-04 18:45:40
112.85.42.186 attackbotsspam
Aug  4 15:28:57 dhoomketu sshd[2149451]: Failed password for root from 112.85.42.186 port 28206 ssh2
Aug  4 15:30:51 dhoomketu sshd[2149468]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=112.85.42.186  user=root
Aug  4 15:30:52 dhoomketu sshd[2149468]: Failed password for root from 112.85.42.186 port 47267 ssh2
Aug  4 15:31:48 dhoomketu sshd[2149474]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=112.85.42.186  user=root
Aug  4 15:31:50 dhoomketu sshd[2149474]: Failed password for root from 112.85.42.186 port 58648 ssh2
...
2020-08-04 18:36:33

Recently Reported IPs

104.21.57.220 104.21.57.225 104.21.57.226 104.21.57.23
104.21.57.230 104.21.57.238 104.21.57.243 104.21.57.246
104.21.57.248 104.21.57.25 104.21.57.251 104.21.57.253
63.233.88.136 104.21.57.27 104.21.57.28 104.21.57.30
104.21.57.32 104.21.57.33 104.21.57.37 73.223.48.235