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 <<>> 104.21.12.91
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 56949
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.12.91.			IN	A

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

;; Query time: 26 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Thu Feb 17 17:49:42 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 91.12.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 91.12.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
139.162.99.243 attackbots
\[09/Jul/2019 06:23:04\] SMTP Spam attack detected from 139.162.99.243, client closed connection before SMTP greeting
\[09/Jul/2019 06:23:05\] SMTP Spam attack detected from 139.162.99.243, client closed connection before SMTP greeting
\[09/Jul/2019 06:23:19\] SMTP Spam attack detected from 139.162.99.243, client closed connection before SMTP greeting
...
2019-07-09 17:03:53
221.152.185.1 attackbotsspam
Sending SPAM email
2019-07-09 18:01:43
185.220.101.56 attackbots
Bot - Fills forms with trash
2019-07-09 17:33:47
202.150.146.194 attack
Unauthorised access (Jul  9) SRC=202.150.146.194 LEN=40 TTL=244 ID=702 TCP DPT=445 WINDOW=1024 SYN
2019-07-09 17:16:02
94.23.45.141 attackbotsspam
ft-1848-basketball.de 94.23.45.141 \[09/Jul/2019:05:21:00 +0200\] "POST /wp-login.php HTTP/1.1" 200 2171 "-" "Mozilla/5.0 \(X11\; Ubuntu\; Linux x86_64\; rv:62.0\) Gecko/20100101 Firefox/62.0"
ft-1848-basketball.de 94.23.45.141 \[09/Jul/2019:05:21:00 +0200\] "POST /wp-login.php HTTP/1.1" 200 2143 "-" "Mozilla/5.0 \(X11\; Ubuntu\; Linux x86_64\; rv:62.0\) Gecko/20100101 Firefox/62.0"
ft-1848-basketball.de 94.23.45.141 \[09/Jul/2019:05:21:01 +0200\] "POST /wp-login.php HTTP/1.1" 200 2128 "-" "Mozilla/5.0 \(X11\; Ubuntu\; Linux x86_64\; rv:62.0\) Gecko/20100101 Firefox/62.0"
2019-07-09 17:46:53
159.65.54.221 attackspam
Jul  9 04:36:04 debian sshd\[17296\]: Invalid user bcampion from 159.65.54.221 port 56468
Jul  9 04:36:04 debian sshd\[17296\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=159.65.54.221
Jul  9 04:36:05 debian sshd\[17296\]: Failed password for invalid user bcampion from 159.65.54.221 port 56468 ssh2
...
2019-07-09 17:55:45
66.191.0.147 attackspambots
$f2bV_matches
2019-07-09 17:43:56
85.237.63.124 attack
email spam
2019-07-09 18:02:51
138.197.156.62 attackspam
09.07.2019 03:23:12 SSH access blocked by firewall
2019-07-09 17:07:40
177.106.190.174 attackbots
Jul  9 05:19:03 server3 sshd[76095]: reveeclipse mapping checking getaddrinfo for 177-106-190-174.xd-dynamic.algarnetsuper.com.br [177.106.190.174] failed - POSSIBLE BREAK-IN ATTEMPT!
Jul  9 05:19:03 server3 sshd[76095]: Invalid user admin from 177.106.190.174
Jul  9 05:19:03 server3 sshd[76095]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.106.190.174
Jul  9 05:19:04 server3 sshd[76095]: Failed password for invalid user admin from 177.106.190.174 port 42367 ssh2
Jul  9 05:19:05 server3 sshd[76095]: Connection closed by 177.106.190.174 [preauth]


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=177.106.190.174
2019-07-09 17:25:01
206.189.166.172 attackbots
Jul  9 11:26:28 localhost sshd\[28188\]: Invalid user webmaster from 206.189.166.172 port 46376
Jul  9 11:26:28 localhost sshd\[28188\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=206.189.166.172
Jul  9 11:26:31 localhost sshd\[28188\]: Failed password for invalid user webmaster from 206.189.166.172 port 46376 ssh2
2019-07-09 17:35:57
202.69.66.130 attackspam
Jul  9 10:28:40 tux-35-217 sshd\[20855\]: Invalid user rustserver from 202.69.66.130 port 37589
Jul  9 10:28:40 tux-35-217 sshd\[20855\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=202.69.66.130
Jul  9 10:28:42 tux-35-217 sshd\[20855\]: Failed password for invalid user rustserver from 202.69.66.130 port 37589 ssh2
Jul  9 10:31:46 tux-35-217 sshd\[20882\]: Invalid user sanjay from 202.69.66.130 port 40583
Jul  9 10:31:46 tux-35-217 sshd\[20882\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=202.69.66.130
...
2019-07-09 17:11:15
5.9.60.115 attackbots
Jul  9 03:04:08 pi01 sshd[28983]: Connection from 5.9.60.115 port 58404 on 192.168.1.10 port 22
Jul  9 03:04:08 pi01 sshd[28983]: Invalid user pass from 5.9.60.115 port 58404
Jul  9 03:04:09 pi01 sshd[28983]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.9.60.115
Jul  9 03:04:10 pi01 sshd[28983]: Failed password for invalid user pass from 5.9.60.115 port 58404 ssh2
Jul  9 03:04:10 pi01 sshd[28983]: Connection closed by 5.9.60.115 port 58404 [preauth]
Jul  9 03:09:14 pi01 sshd[29062]: Connection from 5.9.60.115 port 47902 on 192.168.1.10 port 22
Jul  9 03:09:14 pi01 sshd[29062]: User r.r from 5.9.60.115 not allowed because not listed in AllowUsers
Jul  9 03:09:15 pi01 sshd[29062]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.9.60.115  user=r.r
Jul  9 03:09:16 pi01 sshd[29062]: Failed password for invalid user r.r from 5.9.60.115 port 47902 ssh2
Jul  9 03:09:16 pi01 sshd[29062]: Conne........
-------------------------------
2019-07-09 17:09:47
185.222.211.14 attackspambots
2019-07-09 02:46:24 H=([185.222.211.2]) [185.222.211.14]:1348 I=[192.147.25.65]:25 F= rejected RCPT : RBL: found in thrukfz5b56tq6xao6odgdyjrq.zen.dq.spamhaus.net (127.0.0.9, 127.0.0.3, 127.0.0.2) (https://www.spamhaus.org/sbl/query/SBL442573)
2019-07-09 02:46:24 H=([185.222.211.2]) [185.222.211.14]:1348 I=[192.147.25.65]:25 F= rejected RCPT : RBL: found in thrukfz5b56tq6xao6odgdyjrq.zen.dq.spamhaus.net (127.0.0.9, 127.0.0.3, 127.0.0.2) (https://www.spamhaus.org/sbl/query/SBL442573)
2019-07-09 02:46:24 H=([185.222.211.2]) [185.222.211.14]:1348 I=[192.147.25.65]:25 F= rejected RCPT : RBL: found in thrukfz5b56tq6xao6odgdyjrq.zen.dq.spamhaus.net (127.0.0.9, 127.0.0.3, 127.0.0.2) (https://www.spamhaus.org/sbl/query/SBL442573)
2019-07-09 02:46:24 H=([185.222.211.2]) [185.222.211.14]:1348 I=[192.147.25.65]:25 F= rejected RCP
...
2019-07-09 17:37:28
80.82.78.104 attackspambots
Multiport scan : 16 ports scanned 1010 3467 6708 10432 10672 10765 11000 11234 11235 11765 13467 13547 15987 20215 21236 43203
2019-07-09 17:28:13

Recently Reported IPs

104.21.12.9 104.21.12.94 104.21.12.95 104.21.12.96
104.21.13.102 104.21.13.103 239.201.135.105 104.21.13.111
104.21.13.113 104.21.13.116 40.123.134.154 125.27.204.226
104.21.13.121 104.21.13.122 104.21.13.124 104.21.13.125
104.21.13.13 243.186.233.167 104.21.13.130 104.21.13.136