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 <<>> 104.21.81.71
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 42263
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.81.71.			IN	A

;; AUTHORITY SECTION:
.			94	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022021702 1800 900 604800 86400

;; Query time: 61 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 10:20:32 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 71.81.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 71.81.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
113.161.50.141 attack
Apr  1 18:01:39 cvbnet sshd[18606]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=113.161.50.141 
...
2020-04-02 04:47:52
76.214.112.45 attackspambots
Apr  1 22:34:54 ks10 sshd[1976299]: Failed password for root from 76.214.112.45 port 12366 ssh2
...
2020-04-02 04:45:10
104.192.82.99 attackspam
Lines containing failures of 104.192.82.99
Mar 30 13:04:53 neweola sshd[17050]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=104.192.82.99  user=r.r
Mar 30 13:04:55 neweola sshd[17050]: Failed password for r.r from 104.192.82.99 port 57506 ssh2
Mar 30 13:04:57 neweola sshd[17050]: Received disconnect from 104.192.82.99 port 57506:11: Bye Bye [preauth]
Mar 30 13:04:57 neweola sshd[17050]: Disconnected from authenticating user r.r 104.192.82.99 port 57506 [preauth]
Mar 30 13:20:22 neweola sshd[17885]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=104.192.82.99  user=r.r
Mar 30 13:20:25 neweola sshd[17885]: Failed password for r.r from 104.192.82.99 port 53584 ssh2
Mar 30 13:20:27 neweola sshd[17885]: Received disconnect from 104.192.82.99 port 53584:11: Bye Bye [preauth]
Mar 30 13:20:27 neweola sshd[17885]: Disconnected from authenticating user r.r 104.192.82.99 port 53584 [preauth]
Mar 30........
------------------------------
2020-04-02 05:15:11
124.236.22.12 attack
SSH brute-force attempt
2020-04-02 05:22:09
138.68.82.194 attackbots
[ssh] SSH attack
2020-04-02 05:01:36
51.75.206.42 attack
Apr  1 18:18:01 ArkNodeAT sshd\[26454\]: Invalid user lgy from 51.75.206.42
Apr  1 18:18:01 ArkNodeAT sshd\[26454\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.75.206.42
Apr  1 18:18:04 ArkNodeAT sshd\[26454\]: Failed password for invalid user lgy from 51.75.206.42 port 55112 ssh2
2020-04-02 05:06:36
111.161.74.113 attack
Apr  1 02:39:31 web1 sshd\[8001\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=111.161.74.113  user=root
Apr  1 02:39:32 web1 sshd\[8001\]: Failed password for root from 111.161.74.113 port 41593 ssh2
Apr  1 02:43:04 web1 sshd\[8421\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=111.161.74.113  user=root
Apr  1 02:43:07 web1 sshd\[8421\]: Failed password for root from 111.161.74.113 port 38128 ssh2
Apr  1 02:46:38 web1 sshd\[8765\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=111.161.74.113  user=root
2020-04-02 05:10:40
51.75.124.76 attack
fail2ban
2020-04-02 04:46:38
117.50.38.246 attackbotsspam
Apr  1 22:09:25 Ubuntu-1404-trusty-64-minimal sshd\[24397\]: Invalid user user9 from 117.50.38.246
Apr  1 22:09:25 Ubuntu-1404-trusty-64-minimal sshd\[24397\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=117.50.38.246
Apr  1 22:09:27 Ubuntu-1404-trusty-64-minimal sshd\[24397\]: Failed password for invalid user user9 from 117.50.38.246 port 42724 ssh2
Apr  1 22:15:51 Ubuntu-1404-trusty-64-minimal sshd\[28401\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=117.50.38.246  user=root
Apr  1 22:15:52 Ubuntu-1404-trusty-64-minimal sshd\[28401\]: Failed password for root from 117.50.38.246 port 47800 ssh2
2020-04-02 05:00:17
202.5.42.195 attackbots
Telnetd brute force attack detected by fail2ban
2020-04-02 05:07:36
149.28.105.73 attackbots
5x Failed Password
2020-04-02 04:53:56
95.156.252.181 attackspambots
IR_RIPE-NCC-HM-MNT_<177>1585744050 [1:2403482:56395] ET CINS Active Threat Intelligence Poor Reputation IP TCP group 92 [Classification: Misc Attack] [Priority: 2]:  {TCP} 95.156.252.181:53985
2020-04-02 04:44:03
113.184.3.84 attack
Unauthorised access (Apr  1) SRC=113.184.3.84 LEN=52 TTL=109 ID=2460 DF TCP DPT=445 WINDOW=8192 SYN
2020-04-02 05:16:44
51.91.110.170 attackspam
Apr  1 22:57:30 host01 sshd[6468]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.91.110.170 
Apr  1 22:57:32 host01 sshd[6468]: Failed password for invalid user og from 51.91.110.170 port 51066 ssh2
Apr  1 23:01:55 host01 sshd[7340]: Failed password for root from 51.91.110.170 port 34406 ssh2
...
2020-04-02 05:12:53
51.161.51.147 attack
Apr  1 22:02:37 host sshd[45239]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=ip147.ip-51-161-51.net  user=root
Apr  1 22:02:39 host sshd[45239]: Failed password for root from 51.161.51.147 port 49164 ssh2
...
2020-04-02 05:12:06

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