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:
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Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 104.21.39.54
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 22886
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.39.54.			IN	A

;; AUTHORITY SECTION:
.			399	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022022001 1800 900 604800 86400

;; Query time: 62 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Mon Feb 21 05:23:21 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 54.39.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 54.39.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
159.65.54.221 attackbotsspam
Tried sshing with brute force.
2019-08-19 21:07:34
124.6.153.3 attack
Aug 19 12:27:47 ks10 sshd[5466]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=124.6.153.3 
Aug 19 12:27:48 ks10 sshd[5466]: Failed password for invalid user sybase from 124.6.153.3 port 35148 ssh2
...
2019-08-19 21:08:38
185.176.27.162 attackbots
firewall-block, port(s): 4321/tcp, 8899/tcp
2019-08-19 21:22:41
138.197.186.226 attackbots
\[2019-08-19 12:25:00\] NOTICE\[19505\] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '\' failed for '138.197.186.226:44955' \(callid: AjIjRKZgU4A8u2DC8tckRaLL2PPh-Cta\) - Failed to authenticate
\[2019-08-19 12:25:00\] SECURITY\[1715\] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2019-08-19T12:25:00.554+0200",Severity="Error",Service="PJSIP",EventVersion="1",AccountID="\",SessionID="AjIjRKZgU4A8u2DC8tckRaLL2PPh-Cta",LocalAddress="IPV4/UDP/188.40.118.248/5060",RemoteAddress="IPV4/UDP/138.197.186.226/44955",Challenge="1566210300/0aad7e3f08872d36619a3cb7401ea021",Response="1b82fd9393283585a56f60099f2b9a75",ExpectedResponse=""
\[2019-08-19 12:25:02\] NOTICE\[3217\] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '\' failed for '138.197.186.226:58901' \(callid: TZN32omoWpnmIu2.7FkLxdJk3XMftKO4\) - Failed to authenticate
\[2019-08-19 12:25:02\] SECURITY\[1715\] res_security_log.c: SecurityEvent="Challenge
2019-08-19 20:50:09
195.57.164.10 attackspam
2019-08-19T09:17:31.175976abusebot-3.cloudsearch.cf sshd\[31283\]: Invalid user user from 195.57.164.10 port 29149
2019-08-19 21:07:03
123.215.230.131 attack
Invalid user charles from 123.215.230.131 port 57746
2019-08-19 21:21:05
185.36.81.166 attackspam
Rude login attack (11 tries in 1d)
2019-08-19 21:03:15
142.93.199.72 attackbotsspam
Aug 19 02:33:40 hiderm sshd\[11259\]: Invalid user mai1 from 142.93.199.72
Aug 19 02:33:40 hiderm sshd\[11259\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=142.93.199.72
Aug 19 02:33:42 hiderm sshd\[11259\]: Failed password for invalid user mai1 from 142.93.199.72 port 55840 ssh2
Aug 19 02:37:56 hiderm sshd\[11668\]: Invalid user password from 142.93.199.72
Aug 19 02:37:56 hiderm sshd\[11668\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=142.93.199.72
2019-08-19 20:53:21
185.176.27.118 attack
Honeypot attack, port: 5555, PTR: PTR record not found
2019-08-19 20:55:46
183.57.42.102 attackspam
Aug 19 02:46:57 php2 sshd\[2111\]: Invalid user administrador from 183.57.42.102
Aug 19 02:46:57 php2 sshd\[2111\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=183.57.42.102
Aug 19 02:46:59 php2 sshd\[2111\]: Failed password for invalid user administrador from 183.57.42.102 port 46105 ssh2
Aug 19 02:49:24 php2 sshd\[2341\]: Invalid user skywalker from 183.57.42.102
Aug 19 02:49:24 php2 sshd\[2341\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=183.57.42.102
2019-08-19 21:02:44
149.129.224.137 attack
Aug 19 16:01:03 srv-4 sshd\[6594\]: Invalid user computerdienst from 149.129.224.137
Aug 19 16:01:03 srv-4 sshd\[6594\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=149.129.224.137
Aug 19 16:01:06 srv-4 sshd\[6594\]: Failed password for invalid user computerdienst from 149.129.224.137 port 58124 ssh2
...
2019-08-19 21:26:40
66.249.69.31 attackspambots
Automatic report - Banned IP Access
2019-08-19 21:10:25
179.191.96.166 attackspambots
Aug 19 01:40:07 eddieflores sshd\[29674\]: Invalid user kmrczxcom from 179.191.96.166
Aug 19 01:40:07 eddieflores sshd\[29674\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=179.191.96.166
Aug 19 01:40:09 eddieflores sshd\[29674\]: Failed password for invalid user kmrczxcom from 179.191.96.166 port 39309 ssh2
Aug 19 01:45:17 eddieflores sshd\[30208\]: Invalid user com from 179.191.96.166
Aug 19 01:45:17 eddieflores sshd\[30208\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=179.191.96.166
2019-08-19 21:04:27
177.128.216.2 attackbots
Aug 19 13:56:13 mail sshd\[3416\]: Invalid user black from 177.128.216.2 port 42078
Aug 19 13:56:13 mail sshd\[3416\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.128.216.2
Aug 19 13:56:14 mail sshd\[3416\]: Failed password for invalid user black from 177.128.216.2 port 42078 ssh2
Aug 19 14:01:36 mail sshd\[4641\]: Invalid user t7adm from 177.128.216.2 port 37653
Aug 19 14:01:36 mail sshd\[4641\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.128.216.2
2019-08-19 20:49:35
181.92.229.18 attackbots
Aug 19 13:11:16 XXX sshd[39597]: Invalid user vi from 181.92.229.18 port 44066
2019-08-19 21:26:09

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