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: Sweden

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:
b
Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 81.239.21.17
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 56786
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;81.239.21.17.			IN	A

;; AUTHORITY SECTION:
.			191	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2020090901 1800 900 604800 86400

;; Query time: 18 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Thu Sep 10 02:39:54 CST 2020
;; MSG SIZE  rcvd: 116
Host info
Host 17.21.239.81.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 17.21.239.81.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
144.138.46.229 attackspam
IP Ban Report : https://help-dysk.pl/wordpress-firewall-plugins/ip/144.138.46.229/ 
 AU - 1H : (116)  
 Protection Against DDoS WordPress plugin :  
 "odzyskiwanie danych help-dysk" 
 IP Address Ranges by Country : AU 
 NAME ASN : ASN135887 
 
 IP : 144.138.46.229 
 
 CIDR : 144.138.0.0/16 
 
 PREFIX COUNT : 44 
 
 UNIQUE IP COUNT : 4004608 
 
 
 WYKRYTE ATAKI Z ASN135887 :  
  1H - 1 
  3H - 4 
  6H - 5 
 12H - 11 
 24H - 15 
 
 DateTime : 2019-10-02 05:49:24 
 
 INFO : Port MAX SCAN Scan Detected and Blocked by ADMIN  - data recovery
2019-10-02 16:34:27
45.80.64.246 attack
Oct  1 22:00:36 friendsofhawaii sshd\[25092\]: Invalid user bwadmin from 45.80.64.246
Oct  1 22:00:36 friendsofhawaii sshd\[25092\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=45.80.64.246
Oct  1 22:00:39 friendsofhawaii sshd\[25092\]: Failed password for invalid user bwadmin from 45.80.64.246 port 39704 ssh2
Oct  1 22:04:47 friendsofhawaii sshd\[25414\]: Invalid user bh from 45.80.64.246
Oct  1 22:04:47 friendsofhawaii sshd\[25414\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=45.80.64.246
2019-10-02 16:19:29
142.93.248.5 attackbotsspam
Oct  2 07:07:49 www2 sshd\[33283\]: Invalid user sy from 142.93.248.5Oct  2 07:07:51 www2 sshd\[33283\]: Failed password for invalid user sy from 142.93.248.5 port 36954 ssh2Oct  2 07:11:34 www2 sshd\[33828\]: Invalid user Tnnexus from 142.93.248.5
...
2019-10-02 16:43:25
123.16.255.244 attack
Oct  2 04:51:39 f201 sshd[15822]: Address 123.16.255.244 maps to static.vnpt.vn, but this does not map back to the address - POSSIBLE BREAK-IN ATTEMPT!
Oct  2 04:51:41 f201 sshd[15822]: Connection closed by 123.16.255.244 [preauth]
Oct  2 05:39:21 f201 sshd[28029]: Address 123.16.255.244 maps to static.vnpt.vn, but this does not map back to the address - POSSIBLE BREAK-IN ATTEMPT!
Oct  2 05:39:22 f201 sshd[28029]: Connection closed by 123.16.255.244 [preauth]


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=123.16.255.244
2019-10-02 16:07:07
77.81.230.143 attackspam
Oct  2 05:04:13 localhost sshd\[9640\]: Invalid user cheryl from 77.81.230.143 port 52914
Oct  2 05:04:13 localhost sshd\[9640\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=77.81.230.143
Oct  2 05:04:15 localhost sshd\[9640\]: Failed password for invalid user cheryl from 77.81.230.143 port 52914 ssh2
...
2019-10-02 16:21:07
8.9.36.31 attackbots
2019-10-02T07:52:53.384251tmaserv sshd\[29293\]: Invalid user arena from 8.9.36.31 port 50810
2019-10-02T07:52:53.387444tmaserv sshd\[29293\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=8.9.36.31
2019-10-02T07:52:55.247964tmaserv sshd\[29293\]: Failed password for invalid user arena from 8.9.36.31 port 50810 ssh2
2019-10-02T07:57:13.613317tmaserv sshd\[29556\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=8.9.36.31  user=root
2019-10-02T07:57:15.167506tmaserv sshd\[29556\]: Failed password for root from 8.9.36.31 port 54376 ssh2
2019-10-02T08:01:22.248015tmaserv sshd\[29830\]: Invalid user fc from 8.9.36.31 port 57108
...
2019-10-02 16:21:34
180.168.156.210 attackbotsspam
Automatic report - Banned IP Access
2019-10-02 16:31:20
106.52.116.101 attackspambots
Automatic report - SSH Brute-Force Attack
2019-10-02 16:16:56
213.74.203.106 attack
Oct  2 13:15:54 gw1 sshd[13755]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=213.74.203.106
Oct  2 13:15:56 gw1 sshd[13755]: Failed password for invalid user next from 213.74.203.106 port 38207 ssh2
...
2019-10-02 16:27:50
193.70.0.42 attackspambots
Oct  2 08:52:30 SilenceServices sshd[3151]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=193.70.0.42
Oct  2 08:52:33 SilenceServices sshd[3151]: Failed password for invalid user admin from 193.70.0.42 port 39246 ssh2
Oct  2 08:56:19 SilenceServices sshd[4217]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=193.70.0.42
2019-10-02 16:28:53
120.92.172.196 attack
Invalid user usuario from 120.92.172.196 port 15832
2019-10-02 16:32:57
192.3.177.213 attackspambots
Oct  2 01:48:04 debian sshd\[22547\]: Invalid user teamspeak2 from 192.3.177.213 port 56948
Oct  2 01:48:04 debian sshd\[22547\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=192.3.177.213
Oct  2 01:48:07 debian sshd\[22547\]: Failed password for invalid user teamspeak2 from 192.3.177.213 port 56948 ssh2
...
2019-10-02 16:18:48
191.250.55.30 attackbotsspam
Automatic report - Port Scan Attack
2019-10-02 16:46:24
36.153.23.177 attackbotsspam
2019-10-02T08:01:13.609470abusebot-3.cloudsearch.cf sshd\[4580\]: Invalid user 123456 from 36.153.23.177 port 54310
2019-10-02 16:20:24
148.70.201.162 attackspambots
Oct  2 09:51:18 SilenceServices sshd[19768]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=148.70.201.162
Oct  2 09:51:20 SilenceServices sshd[19768]: Failed password for invalid user rotartsinimdA from 148.70.201.162 port 35600 ssh2
Oct  2 09:56:30 SilenceServices sshd[21244]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=148.70.201.162
2019-10-02 16:16:13

Recently Reported IPs

207.25.19.84 103.103.124.226 182.131.115.81 95.174.109.43
219.5.78.11 110.179.73.234 189.49.211.185 152.211.24.51
76.181.187.31 246.86.54.54 187.54.89.127 13.48.89.8
178.250.68.112 92.255.175.146 18.141.216.9 162.147.189.45
94.192.83.189 136.49.210.126 177.147.174.146 201.92.93.222