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 <<>> 21.128.81.54
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 40083
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;21.128.81.54.			IN	A

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

;; Query time: 35 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Wed Feb 05 17:58:13 CST 2025
;; MSG SIZE  rcvd: 105
Host info
Host 54.81.128.21.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 54.81.128.21.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
103.44.132.44 attackspam
Jul  3 09:12:24 ip-172-31-62-245 sshd\[27881\]: Invalid user speedtest from 103.44.132.44\
Jul  3 09:12:26 ip-172-31-62-245 sshd\[27881\]: Failed password for invalid user speedtest from 103.44.132.44 port 54840 ssh2\
Jul  3 09:14:56 ip-172-31-62-245 sshd\[27903\]: Invalid user gitblit from 103.44.132.44\
Jul  3 09:14:58 ip-172-31-62-245 sshd\[27903\]: Failed password for invalid user gitblit from 103.44.132.44 port 46242 ssh2\
Jul  3 09:17:24 ip-172-31-62-245 sshd\[27931\]: Invalid user um from 103.44.132.44\
2019-07-03 18:57:35
82.159.138.57 attackspambots
Jul  3 07:15:09 localhost sshd\[21674\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=82.159.138.57  user=root
Jul  3 07:15:11 localhost sshd\[21674\]: Failed password for root from 82.159.138.57 port 16980 ssh2
Jul  3 07:17:25 localhost sshd\[21723\]: Invalid user sheng from 82.159.138.57
Jul  3 07:17:25 localhost sshd\[21723\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=82.159.138.57
Jul  3 07:17:27 localhost sshd\[21723\]: Failed password for invalid user sheng from 82.159.138.57 port 14163 ssh2
...
2019-07-03 18:28:52
157.230.28.16 attack
ssh failed login
2019-07-03 19:09:34
185.53.88.37 attack
scan z
2019-07-03 18:25:15
35.186.145.141 attack
Jul  3 00:39:22 plusreed sshd[12359]: Invalid user user1123 from 35.186.145.141
...
2019-07-03 18:31:03
87.198.55.12 attackspam
Jul  2 22:46:11 borg sshd[7398]: Failed unknown for root from 87.198.55.12 port 32796 ssh2
Jul  2 22:46:11 borg sshd[7398]: Failed unknown for root from 87.198.55.12 port 32796 ssh2
Jul  2 22:46:11 borg sshd[7398]: Failed unknown for root from 87.198.55.12 port 32796 ssh2
...
2019-07-03 18:24:19
5.250.136.139 attack
SIPVicious Scanner Detection
2019-07-03 18:56:15
201.139.111.202 attack
2019-07-03T10:16:34.996558abusebot-2.cloudsearch.cf sshd\[3990\]: Invalid user charlott from 201.139.111.202 port 39924
2019-07-03 18:53:41
129.28.194.242 attackbots
ThinkPHP Remote Code Execution Vulnerability
2019-07-03 18:55:47
85.61.14.53 attack
ssh failed login
2019-07-03 18:24:01
103.207.171.125 attack
23/tcp
[2019-07-03]1pkt
2019-07-03 18:46:43
134.255.159.220 attackbots
23/tcp
[2019-07-03]1pkt
2019-07-03 18:49:39
37.49.217.248 attackspambots
[portscan] tcp/23 [TELNET]
*(RWIN=2242)(07030936)
2019-07-03 19:10:33
106.12.100.119 attackspam
Unauthorized SSH connection attempt
2019-07-03 19:02:09
106.12.80.204 attack
Jul  3 09:05:37 MK-Soft-VM6 sshd\[27015\]: Invalid user WinD3str0y from 106.12.80.204 port 58590
Jul  3 09:05:37 MK-Soft-VM6 sshd\[27015\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.80.204
Jul  3 09:05:39 MK-Soft-VM6 sshd\[27015\]: Failed password for invalid user WinD3str0y from 106.12.80.204 port 58590 ssh2
...
2019-07-03 18:50:39

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