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 <<>> 104.21.72.231
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 45927
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.72.231.			IN	A

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

;; Query time: 55 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 02:51:05 CST 2022
;; MSG SIZE  rcvd: 106
Host info
Host 231.72.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 231.72.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
190.192.214.95 attack
Unauthorized connection attempt detected from IP address 190.192.214.95 to port 23 [J]
2020-01-30 20:24:55
80.82.65.90 attackbotsspam
Jan 30 11:41:43 h2177944 kernel: \[3579092.767814\] \[UFW BLOCK\] IN=venet0 OUT= MAC= SRC=80.82.65.90 DST=85.214.117.9 LEN=40 TOS=0x00 PREC=0x00 TTL=250 ID=51877 PROTO=TCP SPT=47036 DPT=4650 WINDOW=1024 RES=0x00 SYN URGP=0 
Jan 30 11:41:43 h2177944 kernel: \[3579092.767829\] \[UFW BLOCK\] IN=venet0 OUT= MAC= SRC=80.82.65.90 DST=85.214.117.9 LEN=40 TOS=0x00 PREC=0x00 TTL=250 ID=51877 PROTO=TCP SPT=47036 DPT=4650 WINDOW=1024 RES=0x00 SYN URGP=0 
Jan 30 12:04:26 h2177944 kernel: \[3580455.002078\] \[UFW BLOCK\] IN=venet0 OUT= MAC= SRC=80.82.65.90 DST=85.214.117.9 LEN=40 TOS=0x00 PREC=0x00 TTL=250 ID=58666 PROTO=TCP SPT=47036 DPT=6000 WINDOW=1024 RES=0x00 SYN URGP=0 
Jan 30 12:04:26 h2177944 kernel: \[3580455.002094\] \[UFW BLOCK\] IN=venet0 OUT= MAC= SRC=80.82.65.90 DST=85.214.117.9 LEN=40 TOS=0x00 PREC=0x00 TTL=250 ID=58666 PROTO=TCP SPT=47036 DPT=6000 WINDOW=1024 RES=0x00 SYN URGP=0 
Jan 30 12:14:36 h2177944 kernel: \[3581065.467399\] \[UFW BLOCK\] IN=venet0 OUT= MAC= SRC=80.82.65.90 DST=85.214.117.9 LEN=40 TO
2020-01-30 20:12:15
117.192.115.222 attack
20/1/30@02:30:21: FAIL: Alarm-Network address from=117.192.115.222
20/1/30@02:30:21: FAIL: Alarm-Network address from=117.192.115.222
...
2020-01-30 20:33:38
222.186.173.154 attack
Jan 30 11:56:16 zeus sshd[4537]: Failed password for root from 222.186.173.154 port 19862 ssh2
Jan 30 11:56:21 zeus sshd[4537]: Failed password for root from 222.186.173.154 port 19862 ssh2
Jan 30 11:56:26 zeus sshd[4537]: Failed password for root from 222.186.173.154 port 19862 ssh2
Jan 30 11:56:31 zeus sshd[4537]: Failed password for root from 222.186.173.154 port 19862 ssh2
Jan 30 11:56:35 zeus sshd[4537]: Failed password for root from 222.186.173.154 port 19862 ssh2
2020-01-30 19:57:02
51.75.126.115 attackbotsspam
Unauthorized connection attempt detected from IP address 51.75.126.115 to port 2220 [J]
2020-01-30 20:02:02
103.254.56.106 attack
Unauthorized connection attempt detected from IP address 103.254.56.106 to port 23 [J]
2020-01-30 20:20:22
205.147.99.118 attack
schuetzenmusikanten.de 205.147.99.118 [30/Jan/2020:05:57:26 +0100] "POST /wp-login.php HTTP/1.1" 200 6348 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
schuetzenmusikanten.de 205.147.99.118 [30/Jan/2020:05:57:27 +0100] "POST /xmlrpc.php HTTP/1.1" 200 4080 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
2020-01-30 20:01:04
92.118.38.40 attackbotsspam
2020-01-30 13:27:37 dovecot_login authenticator failed for \(User\) \[92.118.38.40\]: 535 Incorrect authentication data \(set_id=sammy@no-server.de\)
2020-01-30 13:27:50 dovecot_login authenticator failed for \(User\) \[92.118.38.40\]: 535 Incorrect authentication data \(set_id=sammy@no-server.de\)
2020-01-30 13:27:56 dovecot_login authenticator failed for \(User\) \[92.118.38.40\]: 535 Incorrect authentication data \(set_id=sammy@no-server.de\)
2020-01-30 13:28:34 dovecot_login authenticator failed for \(User\) \[92.118.38.40\]: 535 Incorrect authentication data \(set_id=sampson@no-server.de\)
2020-01-30 13:28:47 dovecot_login authenticator failed for \(User\) \[92.118.38.40\]: 535 Incorrect authentication data \(set_id=sampson@no-server.de\)
...
2020-01-30 20:31:55
222.188.149.134 attackbotsspam
Automatic report - Port Scan Attack
2020-01-30 20:30:30
101.36.150.59 attackbots
$f2bV_matches
2020-01-30 19:57:20
89.25.222.22 attackbots
Jan 30 12:10:42 MK-Soft-Root2 sshd[15533]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=89.25.222.22 
Jan 30 12:10:45 MK-Soft-Root2 sshd[15533]: Failed password for invalid user japendra from 89.25.222.22 port 6202 ssh2
...
2020-01-30 20:09:47
41.34.201.150 attackspam
1580360237 - 01/30/2020 05:57:17 Host: 41.34.201.150/41.34.201.150 Port: 445 TCP Blocked
2020-01-30 20:05:49
46.101.17.215 attack
Unauthorized connection attempt detected from IP address 46.101.17.215 to port 2220 [J]
2020-01-30 20:05:32
124.106.41.140 attackbots
Automatic report - Port Scan Attack
2020-01-30 20:19:34
177.139.218.79 attackbots
20/1/29@23:56:50: FAIL: Alarm-Network address from=177.139.218.79
20/1/29@23:56:50: FAIL: Alarm-Network address from=177.139.218.79
...
2020-01-30 20:21:11

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