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 <<>> 104.21.53.81
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 43773
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.53.81.			IN	A

;; AUTHORITY SECTION:
.			600	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022021701 1800 900 604800 86400

;; Query time: 57 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 02:36:31 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 81.53.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 81.53.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
182.180.128.132 attackbots
2020-05-26T05:37:00.386763ollin.zadara.org sshd[25620]: Invalid user ryu from 182.180.128.132 port 49428
2020-05-26T05:37:02.345477ollin.zadara.org sshd[25620]: Failed password for invalid user ryu from 182.180.128.132 port 49428 ssh2
...
2020-05-26 12:39:40
79.124.62.250 attackbots
trying to access non-authorized port
2020-05-26 12:44:09
240e:d9:d800:200::d4 attackbotsspam
TCP ports : 2087 / 8500
2020-05-26 12:58:37
216.117.130.37 attackbotsspam
Brute forcing RDP port 3389
2020-05-26 12:48:46
37.49.226.237 attackspam
Unauthorized connection attempt detected from IP address 37.49.226.237 to port 22
2020-05-26 13:12:22
182.56.58.165 attack
May 26 00:49:38 h1946882 sshd[10884]: reveeclipse mapping checking getaddri=
nfo for static-mum-182.56.58.165.mtnl.net.in [182.56.58.165] failed - P=
OSSIBLE BREAK-IN ATTEMPT!
May 26 00:49:38 h1946882 sshd[10884]: pam_unix(sshd:auth): authenticati=
on failure; logname=3D uid=3D0 euid=3D0 tty=3Dssh ruser=3D rhost=3D182.=
56.58.165  user=3Dr.r
May 26 00:49:40 h1946882 sshd[10884]: Failed password for r.r from 182=
.56.58.165 port 38596 ssh2
May 26 00:49:40 h1946882 sshd[10884]: Received disconnect from 182.56.5=
8.165: 11: Bye Bye [preauth]
May 26 01:05:48 h1946882 sshd[11010]: reveeclipse mapping checking getaddri=
nfo for static-mum-182.56.58.165.mtnl.net.in [182.56.58.165] failed - P=
OSSIBLE BREAK-IN ATTEMPT!
May 26 01:05:48 h1946882 sshd[11010]: pam_unix(sshd:auth): authenticati=
on failure; logname=3D uid=3D0 euid=3D0 tty=3Dssh ruser=3D rhost=3D182.=
56.58.165=20
May 26 01:05:50 h1946882 sshd[11010]: Failed password for invalid user =
philip from 182.56.58.165 port ........
-------------------------------
2020-05-26 13:11:23
218.92.0.165 attackspambots
May 26 06:49:56 MainVPS sshd[22252]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=218.92.0.165  user=root
May 26 06:49:58 MainVPS sshd[22252]: Failed password for root from 218.92.0.165 port 52089 ssh2
May 26 06:50:12 MainVPS sshd[22252]: Failed password for root from 218.92.0.165 port 52089 ssh2
May 26 06:49:56 MainVPS sshd[22252]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=218.92.0.165  user=root
May 26 06:49:58 MainVPS sshd[22252]: Failed password for root from 218.92.0.165 port 52089 ssh2
May 26 06:50:12 MainVPS sshd[22252]: Failed password for root from 218.92.0.165 port 52089 ssh2
May 26 06:49:56 MainVPS sshd[22252]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=218.92.0.165  user=root
May 26 06:49:58 MainVPS sshd[22252]: Failed password for root from 218.92.0.165 port 52089 ssh2
May 26 06:50:12 MainVPS sshd[22252]: Failed password for root from 218.92.0.165 port 52089 ssh2
M
2020-05-26 12:51:31
37.49.226.248 attackbotsspam
 TCP (SYN) 37.49.226.248:39150 -> port 22, len 48
2020-05-26 12:54:02
189.207.109.21 attackspam
Automatic report - Port Scan Attack
2020-05-26 12:43:13
111.229.43.153 attackbotsspam
May 25 18:38:06 dignus sshd[28937]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=111.229.43.153
May 25 18:38:08 dignus sshd[28937]: Failed password for invalid user sandy from 111.229.43.153 port 37266 ssh2
May 25 18:42:55 dignus sshd[29179]: Invalid user admin from 111.229.43.153 port 34062
May 25 18:42:55 dignus sshd[29179]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=111.229.43.153
May 25 18:42:57 dignus sshd[29179]: Failed password for invalid user admin from 111.229.43.153 port 34062 ssh2
...
2020-05-26 13:04:02
59.127.1.12 attack
Tried sshing with brute force.
2020-05-26 12:48:02
202.137.154.148 attackbotsspam
Dovecot Invalid User Login Attempt.
2020-05-26 13:05:27
118.122.92.219 attackspam
Invalid user mongodb from 118.122.92.219 port 3793
2020-05-26 13:00:57
91.215.46.52 attackspambots
(smtpauth) Failed SMTP AUTH login from 91.215.46.52 (PL/Poland/-): 1 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_TRIGGER; Logs: 2020-05-26 03:53:03 plain authenticator failed for ([91.215.46.52]) [91.215.46.52]: 535 Incorrect authentication data (set_id=k.sheikhan)
2020-05-26 12:32:36
88.73.185.34 attackbotsspam
May 26 00:55:25 vps34202 sshd[11596]: Invalid user mediator from 88.73.185.34
May 26 00:55:27 vps34202 sshd[11596]: Failed password for invalid user mediator from 88.73.185.34 port 48572 ssh2
May 26 00:55:27 vps34202 sshd[11596]: Received disconnect from 88.73.185.34: 11: Bye Bye [preauth]
May 26 01:03:56 vps34202 sshd[11823]: Failed password for r.r from 88.73.185.34 port 33996 ssh2
May 26 01:03:57 vps34202 sshd[11823]: Received disconnect from 88.73.185.34: 11: Bye Bye [preauth]


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=88.73.185.34
2020-05-26 13:07:44

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