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 <<>> 104.21.52.81
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 46842
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.52.81.			IN	A

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

;; Query time: 56 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Thu Feb 17 23:53:37 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 81.52.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 81.52.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
94.102.57.137 attack
Jun 30 00:55:49 debian-2gb-nbg1-2 kernel: \[15729990.686864\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:0e:18:f4:d2:74:7f:6e:37:e3:08:00 SRC=94.102.57.137 DST=195.201.40.59 LEN=40 TOS=0x00 PREC=0x00 TTL=247 ID=18911 PROTO=TCP SPT=50717 DPT=8640 WINDOW=1024 RES=0x00 SYN URGP=0
2020-06-30 07:08:48
37.49.224.147 attack
06/29/2020-17:36:45.311026 37.49.224.147 Protocol: 17 ET COMPROMISED Known Compromised or Hostile Host Traffic group 28
2020-06-30 07:36:28
154.83.12.23 attack
Jun 30 00:48:55 db sshd[7651]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=154.83.12.23 
Jun 30 00:48:57 db sshd[7651]: Failed password for invalid user sheller from 154.83.12.23 port 50318 ssh2
Jun 30 00:51:18 db sshd[7666]: Invalid user admin from 154.83.12.23 port 36454
...
2020-06-30 07:25:35
23.96.115.5 attackspam
1231. On Jun 29 2020 experienced a Brute Force SSH login attempt -> 3 unique times by 23.96.115.5.
2020-06-30 07:31:52
46.38.150.47 attackbotsspam
Jun 30 00:21:58 blackbee postfix/smtpd[11550]: warning: unknown[46.38.150.47]: SASL LOGIN authentication failed: authentication failure
Jun 30 00:23:27 blackbee postfix/smtpd[11550]: warning: unknown[46.38.150.47]: SASL LOGIN authentication failed: authentication failure
Jun 30 00:26:19 blackbee postfix/smtpd[11578]: warning: unknown[46.38.150.47]: SASL LOGIN authentication failed: authentication failure
Jun 30 00:27:42 blackbee postfix/smtpd[11578]: warning: unknown[46.38.150.47]: SASL LOGIN authentication failed: authentication failure
Jun 30 00:29:11 blackbee postfix/smtpd[11578]: warning: unknown[46.38.150.47]: SASL LOGIN authentication failed: authentication failure
...
2020-06-30 07:32:21
129.211.50.239 attackspam
Jun 30 02:21:32 gw1 sshd[2019]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=129.211.50.239
Jun 30 02:21:34 gw1 sshd[2019]: Failed password for invalid user st from 129.211.50.239 port 42770 ssh2
...
2020-06-30 07:38:14
157.245.2.229 attackspambots
157.245.2.229 - - [30/Jun/2020:01:12:28 +0200] "GET /wp-login.php HTTP/1.1" 200 6060 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
157.245.2.229 - - [30/Jun/2020:01:12:29 +0200] "POST /wp-login.php HTTP/1.1" 200 6311 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
157.245.2.229 - - [30/Jun/2020:01:12:30 +0200] "POST /xmlrpc.php HTTP/1.1" 200 427 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
2020-06-30 07:20:46
186.148.129.248 attackbotsspam
Honeypot attack, port: 445, PTR: 248.cxxix.static.eternet.cc.
2020-06-30 07:22:48
52.188.11.57 attackbots
(mod_security) mod_security (id:210492) triggered by 52.188.11.57 (US/United States/-): 5 in the last 300 secs
2020-06-30 07:39:15
115.77.33.242 attackbotsspam
 TCP (SYN) 115.77.33.242:57541 -> port 80, len 44
2020-06-30 07:23:48
122.160.233.137 attackspambots
B: Abusive ssh attack
2020-06-30 07:06:03
175.24.42.244 attack
$f2bV_matches
2020-06-30 07:15:26
87.117.178.105 attack
2020-06-29T20:42:11.212335mail.csmailer.org sshd[23678]: Failed password for invalid user pepe from 87.117.178.105 port 49130 ssh2
2020-06-29T20:45:18.602432mail.csmailer.org sshd[24227]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=87.117.178.105  user=root
2020-06-29T20:45:20.461743mail.csmailer.org sshd[24227]: Failed password for root from 87.117.178.105 port 47450 ssh2
2020-06-29T20:48:25.902250mail.csmailer.org sshd[24827]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=87.117.178.105  user=root
2020-06-29T20:48:28.098104mail.csmailer.org sshd[24827]: Failed password for root from 87.117.178.105 port 45746 ssh2
...
2020-06-30 07:37:04
222.72.137.113 attack
Jun 29 19:46:38 *** sshd[29106]: Invalid user daf from 222.72.137.113
2020-06-30 07:24:18
143.0.77.235 attack
20/6/29@15:47:10: FAIL: Alarm-Network address from=143.0.77.235
20/6/29@15:47:10: FAIL: Alarm-Network address from=143.0.77.235
...
2020-06-30 07:02:07

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