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 <<>> 104.21.38.168
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 10825
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.38.168.			IN	A

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

;; Query time: 64 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Thu Feb 17 21:29:37 CST 2022
;; MSG SIZE  rcvd: 106
Host info
Host 168.38.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 168.38.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
221.229.162.189 attack
Apr 19 22:34:27 mail sshd[3000]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.229.162.189
Apr 19 22:34:29 mail sshd[3000]: Failed password for invalid user dev from 221.229.162.189 port 7945 ssh2
...
2020-04-20 07:22:27
140.143.9.142 attackspambots
(sshd) Failed SSH login from 140.143.9.142 (CN/China/-): 5 in the last 3600 secs
2020-04-20 07:08:36
49.235.58.46 attack
Apr 19 23:53:29 vps647732 sshd[9125]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.235.58.46
Apr 19 23:53:31 vps647732 sshd[9125]: Failed password for invalid user pg from 49.235.58.46 port 33060 ssh2
...
2020-04-20 07:01:20
60.165.131.247 attack
Apr 19 19:46:32 zulu1842 sshd[25211]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=60.165.131.247  user=r.r
Apr 19 19:46:33 zulu1842 sshd[25211]: Failed password for r.r from 60.165.131.247 port 43954 ssh2
Apr 19 19:46:33 zulu1842 sshd[25211]: Received disconnect from 60.165.131.247: 11: Bye Bye [preauth]
Apr 19 20:17:41 zulu1842 sshd[27508]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=60.165.131.247  user=r.r
Apr 19 20:17:44 zulu1842 sshd[27508]: Failed password for r.r from 60.165.131.247 port 36958 ssh2
Apr 19 20:17:44 zulu1842 sshd[27508]: Received disconnect from 60.165.131.247: 11: Bye Bye [preauth]
Apr 19 20:22:09 zulu1842 sshd[27857]: Invalid user ol from 60.165.131.247
Apr 19 20:22:09 zulu1842 sshd[27857]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=60.165.131.247 
Apr 19 20:22:11 zulu1842 sshd[27857]: Failed password for invalid us........
-------------------------------
2020-04-20 07:04:35
104.248.126.170 attackbotsspam
SASL PLAIN auth failed: ruser=...
2020-04-20 07:05:53
175.24.107.214 attackspam
Apr 19 23:13:17 hosting sshd[24339]: Invalid user ubuntu from 175.24.107.214 port 55954
...
2020-04-20 07:29:15
2.38.181.39 attackbots
2020-04-20T00:41:49.554642vps773228.ovh.net sshd[16363]: Invalid user xm from 2.38.181.39 port 51623
2020-04-20T00:41:49.571415vps773228.ovh.net sshd[16363]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=net-2-38-181-39.cust.vodafonedsl.it
2020-04-20T00:41:49.554642vps773228.ovh.net sshd[16363]: Invalid user xm from 2.38.181.39 port 51623
2020-04-20T00:41:52.235986vps773228.ovh.net sshd[16363]: Failed password for invalid user xm from 2.38.181.39 port 51623 ssh2
2020-04-20T00:49:29.584530vps773228.ovh.net sshd[16473]: Invalid user yq from 2.38.181.39 port 32780
...
2020-04-20 07:00:51
188.0.128.53 attackbotsspam
$f2bV_matches | Triggered by Fail2Ban at Vostok web server
2020-04-20 07:07:53
192.42.116.15 attack
CMS (WordPress or Joomla) login attempt.
2020-04-20 07:32:05
182.61.104.246 attack
(sshd) Failed SSH login from 182.61.104.246 (CN/China/-): 3 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SSHD; Logs: Apr 19 20:10:10 andromeda sshd[4807]: Invalid user bsbk from 182.61.104.246 port 32538
Apr 19 20:10:12 andromeda sshd[4807]: Failed password for invalid user bsbk from 182.61.104.246 port 32538 ssh2
Apr 19 20:13:50 andromeda sshd[4896]: Invalid user ubuntu from 182.61.104.246 port 33461
2020-04-20 06:57:34
138.68.4.8 attack
SSH authentication failure x 6 reported by Fail2Ban
...
2020-04-20 07:01:54
5.34.131.72 attack
Apr 19 23:43:06 v22019038103785759 sshd\[18725\]: Invalid user wk from 5.34.131.72 port 58274
Apr 19 23:43:06 v22019038103785759 sshd\[18725\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.34.131.72
Apr 19 23:43:08 v22019038103785759 sshd\[18725\]: Failed password for invalid user wk from 5.34.131.72 port 58274 ssh2
Apr 19 23:48:35 v22019038103785759 sshd\[19160\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.34.131.72  user=root
Apr 19 23:48:37 v22019038103785759 sshd\[19160\]: Failed password for root from 5.34.131.72 port 39116 ssh2
...
2020-04-20 07:08:25
139.99.40.44 attack
$f2bV_matches
2020-04-20 07:20:32
45.116.115.130 attack
2020-04-20T00:53:25.729889vps751288.ovh.net sshd\[979\]: Invalid user test9 from 45.116.115.130 port 53376
2020-04-20T00:53:25.740760vps751288.ovh.net sshd\[979\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=45.116.115.130
2020-04-20T00:53:28.278784vps751288.ovh.net sshd\[979\]: Failed password for invalid user test9 from 45.116.115.130 port 53376 ssh2
2020-04-20T00:58:06.662758vps751288.ovh.net sshd\[1055\]: Invalid user admin from 45.116.115.130 port 37754
2020-04-20T00:58:06.675026vps751288.ovh.net sshd\[1055\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=45.116.115.130
2020-04-20 07:06:42
163.172.230.4 attackbotsspam
[2020-04-19 19:06:34] NOTICE[1170][C-00002715] chan_sip.c: Call from '' (163.172.230.4:60898) to extension '+972592277524' rejected because extension not found in context 'public'.
[2020-04-19 19:06:34] SECURITY[1184] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-04-19T19:06:34.148-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="+972592277524",SessionID="0x7f6c082b17a8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/163.172.230.4/60898",ACLName="no_extension_match"
[2020-04-19 19:10:37] NOTICE[1170][C-00002721] chan_sip.c: Call from '' (163.172.230.4:61946) to extension '9011972592277524' rejected because extension not found in context 'public'.
[2020-04-19 19:10:37] SECURITY[1184] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-04-19T19:10:37.477-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="9011972592277524",SessionID="0x7f6c08341c08",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/16
...
2020-04-20 07:14:57

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