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 <<>> 104.21.40.28
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 15297
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.40.28.			IN	A

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

;; Query time: 25 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 02:28:45 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 28.40.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 28.40.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
129.213.99.38 attack
SSH Authentication Attempts Exceeded
2020-04-04 17:55:02
101.255.65.138 attackspambots
Fail2Ban - SSH Bruteforce Attempt
2020-04-04 18:19:18
199.249.230.114 attackbotsspam
MLV GET /wp-config.php.1
2020-04-04 18:08:32
118.70.117.156 attackspambots
Unauthorized connection attempt detected from IP address 118.70.117.156 to port 23 [T]
2020-04-04 18:22:56
183.82.36.44 attack
Apr  4 03:52:11 server1 sshd\[17290\]: Invalid user www from 183.82.36.44
Apr  4 03:52:11 server1 sshd\[17290\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=183.82.36.44 
Apr  4 03:52:13 server1 sshd\[17290\]: Failed password for invalid user www from 183.82.36.44 port 53022 ssh2
Apr  4 03:58:11 server1 sshd\[19844\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=183.82.36.44  user=root
Apr  4 03:58:13 server1 sshd\[19844\]: Failed password for root from 183.82.36.44 port 35148 ssh2
...
2020-04-04 17:58:53
211.152.35.9 attack
SMB Server BruteForce Attack
2020-04-04 18:27:56
138.68.137.20 attack
Apr  4 06:51:24 site3 sshd\[187581\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.68.137.20  user=root
Apr  4 06:51:26 site3 sshd\[187581\]: Failed password for root from 138.68.137.20 port 55852 ssh2
Apr  4 06:52:29 site3 sshd\[187593\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.68.137.20  user=root
Apr  4 06:52:32 site3 sshd\[187593\]: Failed password for root from 138.68.137.20 port 42846 ssh2
Apr  4 06:53:44 site3 sshd\[187603\]: Invalid user admin from 138.68.137.20
...
2020-04-04 17:59:15
190.165.166.138 attackbots
SSH brute force attempt
2020-04-04 17:58:26
138.19.25.251 attackspam
Apr  4 00:46:51 NPSTNNYC01T sshd[27112]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.19.25.251
Apr  4 00:46:54 NPSTNNYC01T sshd[27112]: Failed password for invalid user user15 from 138.19.25.251 port 41480 ssh2
Apr  4 00:50:38 NPSTNNYC01T sshd[27403]: Failed password for root from 138.19.25.251 port 38007 ssh2
...
2020-04-04 17:57:21
111.59.100.243 attackspam
(sshd) Failed SSH login from 111.59.100.243 (CN/China/-): 5 in the last 3600 secs
2020-04-04 18:28:56
51.38.185.121 attackspambots
Invalid user uht from 51.38.185.121 port 39827
2020-04-04 17:52:48
84.192.181.105 attackspam
SSH auth scanning - multiple failed logins
2020-04-04 18:27:33
14.29.234.218 attack
2020-04-03 UTC: (2x) - nproc,root
2020-04-04 18:19:42
182.75.139.26 attackbots
Apr  4 11:48:12 xeon sshd[9193]: Failed password for invalid user linmingxian from 182.75.139.26 port 30469 ssh2
2020-04-04 18:26:51
223.105.4.244 attack
Apr  4 11:20:57 mail kernel: [4818898.067681] [UFW BLOCK] IN=eth0 OUT= MAC=00:16:3c:05:0d:89:f8:66:f2:68:66:ff:08:00 SRC=223.105.4.244 DST=77.73.69.240 LEN=44 TOS=0x00 PREC=0x00 TTL=242 ID=40578 PROTO=TCP SPT=7579 DPT=8118 WINDOW=1024 RES=0x00 SYN URGP=0 
Apr  4 11:20:57 mail kernel: [4818898.097216] [UFW BLOCK] IN=eth0 OUT= MAC=00:16:3c:05:0d:89:f8:66:f2:68:66:ff:08:00 SRC=223.105.4.244 DST=77.73.69.240 LEN=44 TOS=0x00 PREC=0x00 TTL=242 ID=48080 PROTO=TCP SPT=59993 DPT=8081 WINDOW=1024 RES=0x00 SYN URGP=0 
Apr  4 11:20:57 mail kernel: [4818898.186691] [UFW BLOCK] IN=eth0 OUT= MAC=00:16:3c:05:0d:89:f8:66:f2:68:66:ff:08:00 SRC=223.105.4.244 DST=77.73.69.240 LEN=44 TOS=0x00 PREC=0x00 TTL=242 ID=16504 PROTO=TCP SPT=24430 DPT=48819 WINDOW=1024 RES=0x00 SYN URGP=0 
Apr  4 11:20:57 mail kernel: [4818898.200469] [UFW BLOCK] IN=eth0 OUT= MAC=00:16:3c:05:0d:89:f8:66:f2:68:66:ff:08:00 SRC=223.105.4.244 DST=77.73.69.240 LEN=44 TOS=0x00 PREC=0x00 TTL=242 ID=26304 PROTO=TCP SPT=5583 DPT=8799 WINDOW=1024 RES=0x00 SYN URGP=
2020-04-04 18:03:52

Recently Reported IPs

104.21.40.246 104.21.69.37 104.21.40.253 104.21.40.31
104.21.40.32 104.21.40.34 104.21.40.36 104.21.40.39
104.21.40.4 104.21.40.51 104.21.40.5 104.21.40.64
104.21.40.60 104.21.40.55 104.21.40.47 104.21.40.69
104.21.40.66 104.21.69.41 104.21.40.72 104.21.40.76