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 <<>> 104.21.28.72
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 13245
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.28.72.			IN	A

;; AUTHORITY SECTION:
.			318	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 02:21:43 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 72.28.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 72.28.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
180.215.199.103 attack
Invalid user best from 180.215.199.103 port 41538
2020-05-01 15:37:29
104.198.16.231 attackspambots
$f2bV_matches | Triggered by Fail2Ban at Vostok web server
2020-05-01 15:49:40
101.78.209.39 attackbots
Invalid user bot01 from 101.78.209.39 port 43028
2020-05-01 15:15:27
110.164.189.53 attackbots
2020-05-01T00:31:25.655019linuxbox-skyline sshd[88280]: Invalid user Test from 110.164.189.53 port 53384
...
2020-05-01 15:10:30
106.54.182.239 attackbots
Invalid user louis from 106.54.182.239 port 58566
2020-05-01 15:11:19
106.13.196.51 attackspam
hit -> srv3:22
2020-05-01 15:11:53
106.12.33.181 attackspambots
Invalid user watanabe from 106.12.33.181 port 37972
2020-05-01 15:14:23
222.186.173.183 attack
fail2ban -- 222.186.173.183
...
2020-05-01 15:31:11
182.61.10.28 attackbots
Invalid user gabriel from 182.61.10.28 port 52706
2020-05-01 15:37:15
112.13.91.29 attackspambots
Apr 30 21:30:49 pixelmemory sshd[16376]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=112.13.91.29
Apr 30 21:30:51 pixelmemory sshd[16376]: Failed password for invalid user sales1 from 112.13.91.29 port 2983 ssh2
Apr 30 21:43:45 pixelmemory sshd[18863]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=112.13.91.29
...
2020-05-01 15:47:50
51.254.205.6 attackspam
Invalid user counter from 51.254.205.6 port 40390
2020-05-01 15:22:53
211.155.95.246 attack
Invalid user smb from 211.155.95.246 port 60056
2020-05-01 15:32:12
118.25.144.49 attackbotsspam
IP blocked
2020-05-01 15:45:21
64.225.14.108 attackspam
Invalid user kate from 64.225.14.108 port 40482
2020-05-01 15:20:12
94.191.64.59 attackspam
SSH Login Bruteforce
2020-05-01 15:16:15

Recently Reported IPs

104.21.28.49 104.21.28.77 104.21.28.76 104.21.28.74
104.21.28.89 104.21.28.90 104.21.28.80 104.21.28.78
104.21.28.93 104.21.68.92 104.21.29.100 104.21.28.99
104.21.29.109 104.21.29.113 104.21.29.103 104.21.29.102
104.21.29.115 104.21.29.118 104.21.29.120 104.21.68.93