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 of America (the)

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 <<>> 137.81.11.21
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 18274
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;137.81.11.21.			IN	A

;; AUTHORITY SECTION:
.			30	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2025020500 1800 900 604800 86400

;; Query time: 36 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Wed Feb 05 16:48:09 CST 2025
;; MSG SIZE  rcvd: 105
Host info
Host 21.11.81.137.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 21.11.81.137.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
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1433/tcp
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2020-05-12T21:18:37.905377galaxy.wi.uni-potsdam.de sshd[32765]: Invalid user ftpuser from 114.118.7.153 port 43098
2020-05-12T21:18:37.907125galaxy.wi.uni-potsdam.de sshd[32765]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=114.118.7.153
2020-05-12T21:18:37.905377galaxy.wi.uni-potsdam.de sshd[32765]: Invalid user ftpuser from 114.118.7.153 port 43098
2020-05-12T21:18:40.094783galaxy.wi.uni-potsdam.de sshd[32765]: Failed password for invalid user ftpuser from 114.118.7.153 port 43098 ssh2
2020-05-12T21:21:34.944680galaxy.wi.uni-potsdam.de sshd[630]: Invalid user postgres from 114.118.7.153 port 36718
2020-05-12T21:21:34.946857galaxy.wi.uni-potsdam.de sshd[630]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=114.118.7.153
2020-05-12T21:21:34.944680galaxy.wi.uni-potsdam.de sshd[630]: Invalid user postgres from 114.118.7.153 port 36718
2020-05-12T21:21:36.768033galaxy.wi.uni-potsdam.de sshd[630]: Failed pas
...
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2020-05-13 03:56:17
179.176.106.236 attackspambots
Unauthorized connection attempt detected from IP address 179.176.106.236 to port 23
2020-05-13 03:59:57

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