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 <<>> 104.21.72.19
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 42547
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.72.19.			IN	A

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

;; Query time: 72 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 02:50:51 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 19.72.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 19.72.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
95.15.41.186 attackspam
Telnet/23 MH Probe, BF, Hack -
2020-01-10 05:18:11
46.32.60.139 attack
Jan  9 21:57:36 vpn01 sshd[21184]: Failed password for root from 46.32.60.139 port 38650 ssh2
...
2020-01-10 05:46:26
178.154.171.135 attackbots
[Thu Jan 09 20:00:45.398945 2020] [:error] [pid 4546:tid 140223635781376] [client 178.154.171.135:64472] [client 178.154.171.135] ModSecurity: Access denied with code 403 (phase 2). Pattern match "^[\\\\d.:]+$" at REQUEST_HEADERS:Host. [file "/etc/modsecurity/owasp-modsecurity-crs-3.2.0/rules/REQUEST-920-PROTOCOL-ENFORCEMENT.conf"] [line "696"] [id "920350"] [msg "Host header is a numeric IP address"] [data "103.27.207.197"] [severity "WARNING"] [ver "OWASP_CRS/3.2.0"] [tag "application-multi"] [tag "language-multi"] [tag "platform-multi"] [tag "attack-protocol"] [tag "OWASP_CRS"] [tag "OWASP_CRS/PROTOCOL_VIOLATION/IP_HOST"] [tag "WASCTC/WASC-21"] [tag "OWASP_TOP_10/A7"] [tag "PCI/6.5.10"] [hostname "103.27.207.197"] [uri "/"] [unique_id "Xhcj-a2WrVQR8vXAhRVliAAAAEA"]
...
2020-01-10 05:21:33
222.186.30.145 attackspambots
SSH Brute Force, server-1 sshd[28254]: Failed password for root from 222.186.30.145 port 19502 ssh2
2020-01-10 05:35:04
71.44.230.14 attackbots
Unauthorized connection attempt from IP address 71.44.230.14 on Port 445(SMB)
2020-01-10 05:19:00
176.113.115.20 attack
01/09/2020-16:27:15.373707 176.113.115.20 Protocol: 6 ET SCAN NMAP -sS window 1024
2020-01-10 05:39:27
117.5.5.55 attackspam
Unauthorized connection attempt from IP address 117.5.5.55 on Port 445(SMB)
2020-01-10 05:22:28
222.186.169.194 attackspam
Jan  9 11:27:01 web9 sshd\[12001\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.169.194  user=root
Jan  9 11:27:03 web9 sshd\[12001\]: Failed password for root from 222.186.169.194 port 57092 ssh2
Jan  9 11:27:06 web9 sshd\[12001\]: Failed password for root from 222.186.169.194 port 57092 ssh2
Jan  9 11:27:18 web9 sshd\[12045\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.169.194  user=root
Jan  9 11:27:21 web9 sshd\[12045\]: Failed password for root from 222.186.169.194 port 8782 ssh2
2020-01-10 05:33:16
122.225.18.194 attackspambots
Jan  9 21:27:00 marvibiene sshd[24687]: Invalid user humberto from 122.225.18.194 port 56736
Jan  9 21:27:00 marvibiene sshd[24687]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=122.225.18.194
Jan  9 21:27:00 marvibiene sshd[24687]: Invalid user humberto from 122.225.18.194 port 56736
Jan  9 21:27:02 marvibiene sshd[24687]: Failed password for invalid user humberto from 122.225.18.194 port 56736 ssh2
...
2020-01-10 05:44:04
115.136.138.30 attackspam
$f2bV_matches
2020-01-10 05:38:10
178.127.206.83 attack
Unauthorized connection attempt from IP address 178.127.206.83 on Port 445(SMB)
2020-01-10 05:17:13
94.123.155.229 attackspambots
Automatic report - Port Scan Attack
2020-01-10 05:48:18
79.166.226.88 attack
Telnet/23 MH Probe, BF, Hack -
2020-01-10 05:13:55
183.166.136.212 attackbots
2020-01-09 15:27:14 dovecot_login authenticator failed for (dftlb) [183.166.136.212]:57752 I=[192.147.25.65]:25: 535 Incorrect authentication data (set_id=wangqian@lerctr.org)
2020-01-09 15:27:21 dovecot_login authenticator failed for (knisd) [183.166.136.212]:57752 I=[192.147.25.65]:25: 535 Incorrect authentication data (set_id=wangqian@lerctr.org)
2020-01-09 15:27:32 dovecot_login authenticator failed for (mvnev) [183.166.136.212]:57752 I=[192.147.25.65]:25: 535 Incorrect authentication data (set_id=wangqian@lerctr.org)
...
2020-01-10 05:28:01
149.202.233.206 attack
Jan  9 22:22:05 eventyay sshd[10369]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=149.202.233.206
Jan  9 22:22:07 eventyay sshd[10369]: Failed password for invalid user 159.89.41.141 from 149.202.233.206 port 57478 ssh2
Jan  9 22:27:19 eventyay sshd[10412]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=149.202.233.206
...
2020-01-10 05:35:22

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