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: None

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 <<>> 104.21.13.203
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 24193
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.13.203.			IN	A

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

;; Query time: 23 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 02:10:45 CST 2022
;; MSG SIZE  rcvd: 106
Host info
Host 203.13.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 203.13.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
51.15.1.221 attackspam
Jul 28 01:15:22 thevastnessof sshd[10156]: Failed password for root from 51.15.1.221 port 42366 ssh2
...
2019-07-28 10:23:58
195.201.115.206 attack
Jul 27 16:53:27 penfold sshd[3347]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=195.201.115.206  user=r.r
Jul 27 16:53:29 penfold sshd[3347]: Failed password for r.r from 195.201.115.206 port 34252 ssh2
Jul 27 16:53:29 penfold sshd[3347]: Received disconnect from 195.201.115.206 port 34252:11: Bye Bye [preauth]
Jul 27 16:53:29 penfold sshd[3347]: Disconnected from 195.201.115.206 port 34252 [preauth]
Jul 27 16:59:18 penfold sshd[3508]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=195.201.115.206  user=r.r
Jul 27 16:59:20 penfold sshd[3508]: Failed password for r.r from 195.201.115.206 port 51454 ssh2
Jul 27 16:59:20 penfold sshd[3508]: Received disconnect from 195.201.115.206 port 51454:11: Bye Bye [preauth]
Jul 27 16:59:20 penfold sshd[3508]: Disconnected from 195.201.115.206 port 51454 [preauth]
Jul 27 17:03:24 penfold sshd[3660]: pam_unix(sshd:auth): authentication failure; logname........
-------------------------------
2019-07-28 10:24:32
62.210.151.21 attack
\[2019-07-27 22:37:47\] SECURITY\[2326\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-07-27T22:37:47.821-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="01112243078499",SessionID="0x7ff4d0376cc8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/62.210.151.21/53575",ACLName="no_extension_match"
\[2019-07-27 22:37:56\] SECURITY\[2326\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-07-27T22:37:56.773-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="0012243078499",SessionID="0x7ff4d07679d8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/62.210.151.21/61773",ACLName="no_extension_match"
\[2019-07-27 22:38:04\] SECURITY\[2326\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-07-27T22:38:04.420-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="90012243078499",SessionID="0x7ff4d004fe18",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/62.210.151.21/52577",ACLName="no_extensi
2019-07-28 10:43:52
94.191.64.18 attackbotsspam
Jul 28 04:16:47 nextcloud sshd\[917\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=94.191.64.18  user=root
Jul 28 04:16:49 nextcloud sshd\[917\]: Failed password for root from 94.191.64.18 port 53416 ssh2
Jul 28 04:19:23 nextcloud sshd\[6808\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=94.191.64.18  user=root
...
2019-07-28 10:25:00
178.32.10.94 attackspambots
2019-07-28T02:33:17.108027abusebot-6.cloudsearch.cf sshd\[31740\]: Invalid user admin from 178.32.10.94 port 34477
2019-07-28 11:04:27
103.207.39.21 attackspam
2019-07-28T03:59:52.608550beta postfix/smtpd[18312]: warning: unknown[103.207.39.21]: SASL LOGIN authentication failed: authentication failure
2019-07-28T03:59:55.747842beta postfix/smtpd[18312]: warning: unknown[103.207.39.21]: SASL LOGIN authentication failed: authentication failure
2019-07-28T03:59:58.672743beta postfix/smtpd[18312]: warning: unknown[103.207.39.21]: SASL LOGIN authentication failed: authentication failure
...
2019-07-28 11:03:06
187.120.138.36 attack
failed_logins
2019-07-28 11:07:06
27.223.89.238 attackspambots
Repeated brute force against a port
2019-07-28 10:50:40
178.62.30.135 attackbots
Jul 28 04:24:34 SilenceServices sshd[12063]: Failed password for root from 178.62.30.135 port 40862 ssh2
Jul 28 04:28:54 SilenceServices sshd[16096]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=178.62.30.135
Jul 28 04:28:56 SilenceServices sshd[16096]: Failed password for invalid user com from 178.62.30.135 port 36850 ssh2
2019-07-28 10:42:21
37.17.168.163 attack
proto=tcp  .  spt=49491  .  dpt=25  .     (listed on Blocklist de  Jul 27)     (143)
2019-07-28 10:50:10
103.242.125.243 attack
proto=tcp  .  spt=60261  .  dpt=25  .     (listed on Blocklist de  Jul 27)     (134)
2019-07-28 11:05:26
185.176.221.164 attack
proto=tcp  .  spt=58551  .  dpt=3389  .  src=185.176.221.164  .  dst=xx.xx.4.1  .     (listed on Alienvault Jul 27)     (156)
2019-07-28 10:22:58
45.4.66.69 attackbots
Automatic report - Port Scan Attack
2019-07-28 10:43:29
106.12.127.211 attack
SSH Brute-Force attacks
2019-07-28 10:39:10
184.105.139.118 attackspam
Automatic report - Port Scan Attack
2019-07-28 10:33:15

Recently Reported IPs

104.21.13.20 104.21.67.222 104.21.13.220 104.21.13.222
104.21.13.225 104.21.13.230 104.21.13.218 104.21.13.201
104.21.13.209 104.21.13.210 104.21.13.232 104.21.13.234
104.21.13.238 104.21.13.240 104.21.13.243 104.21.13.242
104.21.13.239 104.21.67.227 104.21.13.27 104.21.13.248