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 <<>> 104.21.17.121
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 33792
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.17.121.			IN	A

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

;; Query time: 60 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Thu Feb 17 18:17:54 CST 2022
;; MSG SIZE  rcvd: 106
Host info
Host 121.17.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 121.17.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
223.225.64.19 attack
@LucianNitescu Personal Honeypot Network <<<>>> Donate at paypal.me/LNitescu <<<>>> 2019-06-28 12:59:02,184 INFO [shellcode_manager] (223.225.64.19) no match, writing hexdump (6fedc213f6fe6009abe68fd93a9b3572 :1851776) - MS17010 (EternalBlue)
2019-06-28 23:38:53
59.8.177.80 attack
2019-06-28T15:50:51.233381abusebot-4.cloudsearch.cf sshd\[19023\]: Invalid user ubuntu from 59.8.177.80 port 35842
2019-06-29 00:07:08
109.94.233.6 attack
Jun 24 15:53:21 josie sshd[7811]: Invalid user robert from 109.94.233.6
Jun 24 15:53:21 josie sshd[7811]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=109.94.233.6 
Jun 24 15:53:23 josie sshd[7811]: Failed password for invalid user robert from 109.94.233.6 port 43730 ssh2
Jun 24 15:53:23 josie sshd[7819]: Received disconnect from 109.94.233.6: 11: Bye Bye
Jun 24 15:56:33 josie sshd[11066]: Invalid user man from 109.94.233.6
Jun 24 15:56:33 josie sshd[11066]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=109.94.233.6 
Jun 24 15:56:35 josie sshd[11066]: Failed password for invalid user man from 109.94.233.6 port 53936 ssh2
Jun 24 15:56:35 josie sshd[11068]: Received disconnect from 109.94.233.6: 11: Bye Bye
Jun 24 15:58:06 josie sshd[12685]: Invalid user test from 109.94.233.6
Jun 24 15:58:06 josie sshd[12685]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh rus........
-------------------------------
2019-06-28 23:41:59
23.224.82.82 attackspambots
port 23 attempt blocked
2019-06-29 00:19:08
185.10.68.53 attack
firewall-block, port(s): 7443/tcp
2019-06-28 23:34:04
189.91.6.51 attack
$f2bV_matches
2019-06-28 23:25:44
58.216.238.76 attack
Jun 28 14:48:19 mercury auth[1275]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=josh@learnargentinianspanish.com rhost=58.216.238.76
...
2019-06-29 00:13:34
87.250.224.91 attack
[Thu Jun 27 20:11:56.318500 2019] [:error] [pid 14487:tid 140348525344512] [client 87.250.224.91:35129] [client 87.250.224.91] ModSecurity: Access denied with code 403 (phase 2). Pattern match "^[\\\\d.:]+$" at REQUEST_HEADERS:Host. [file "/etc/modsecurity/owasp-modsecurity-crs-3.1.1/rules/REQUEST-920-PROTOCOL-ENFORCEMENT.conf"] [line "792"] [id "920350"] [msg "Host header is a numeric IP address"] [data "103.27.207.197"] [severity "WARNING"] [ver "OWASP_CRS/3.1.1"] [tag "application-multi"] [tag "language-multi"] [tag "platform-multi"] [tag "attack-protocol"] [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 "XRTAnChJ9UCYUMl6cLuTTwAAAAs"]
...
2019-06-29 00:12:31
197.97.230.163 attackspam
Jun 28 15:49:50 dev sshd\[6068\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=197.97.230.163  user=root
Jun 28 15:49:52 dev sshd\[6068\]: Failed password for root from 197.97.230.163 port 57776 ssh2
...
2019-06-28 23:23:30
171.244.18.14 attack
Jun 28 17:14:22 lnxweb62 sshd[5402]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=171.244.18.14
Jun 28 17:14:22 lnxweb62 sshd[5402]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=171.244.18.14
2019-06-28 23:54:29
118.210.10.139 attack
Jun 28 15:49:53 srv206 sshd[3748]: Invalid user ubnt from 118.210.10.139
Jun 28 15:49:53 srv206 sshd[3748]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=ppp118-210-10-139.adl-adc-lon-bras31.tpg.internode.on.net
Jun 28 15:49:53 srv206 sshd[3748]: Invalid user ubnt from 118.210.10.139
Jun 28 15:49:55 srv206 sshd[3748]: Failed password for invalid user ubnt from 118.210.10.139 port 51600 ssh2
...
2019-06-28 23:18:58
94.97.104.135 attack
@LucianNitescu Personal Honeypot Network <<<>>> Donate at paypal.me/LNitescu <<<>>> 2019-06-28 13:48:15,112 INFO [shellcode_manager] (94.97.104.135) no match, writing hexdump (35704429de1a799830ba341ec6e055d0 :132) - SMB (Unknown) Vulnerability
2019-06-28 23:26:23
114.225.115.48 attack
SASL broute force
2019-06-29 00:11:00
168.232.128.218 attackspambots
Jun 28 16:49:18 server2 sshd\[3768\]: User root from 168.232.128.218 not allowed because not listed in AllowUsers
Jun 28 16:49:23 server2 sshd\[3783\]: User root from 168.232.128.218 not allowed because not listed in AllowUsers
Jun 28 16:49:30 server2 sshd\[3785\]: User root from 168.232.128.218 not allowed because not listed in AllowUsers
Jun 28 16:49:37 server2 sshd\[3787\]: Invalid user admin from 168.232.128.218
Jun 28 16:49:43 server2 sshd\[3789\]: Invalid user admin from 168.232.128.218
Jun 28 16:49:50 server2 sshd\[3793\]: Invalid user admin from 168.232.128.218
2019-06-28 23:24:37
79.167.76.131 attackspam
1561632670 - 06/27/2019 17:51:10 Host: ppp079167076131.access.hol.gr/79.167.76.131 Port: 23 TCP Blocked
...
2019-06-28 23:13:36

Recently Reported IPs

104.21.17.120 104.21.17.125 104.21.17.130 81.140.92.96
104.21.17.132 104.21.17.136 53.70.147.207 104.21.17.14
104.21.17.140 185.147.28.132 104.21.17.142 104.21.17.143
80.175.112.174 104.21.17.145 104.21.17.148 104.21.17.151
104.21.17.152 104.21.17.16 104.21.17.161 104.21.17.162