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 <<>> 104.21.39.145
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 38005
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.39.145.			IN	A

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

;; Query time: 14 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Thu Feb 17 21:37:38 CST 2022
;; MSG SIZE  rcvd: 106
Host info
Host 145.39.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 145.39.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
27.128.233.3 attackspam
Sep 10 08:38:51 root sshd[1079]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=27.128.233.3 
...
2020-09-10 23:20:14
190.141.172.90 attackspam
20/9/9@12:55:39: FAIL: Alarm-Network address from=190.141.172.90
20/9/9@12:55:39: FAIL: Alarm-Network address from=190.141.172.90
...
2020-09-10 22:41:53
45.129.33.8 attackbots
 TCP (SYN) 45.129.33.8:41693 -> port 32577, len 44
2020-09-10 23:13:47
129.211.45.88 attackspambots
2020-09-10T15:45:40.310649cyberdyne sshd[570658]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=129.211.45.88  user=root
2020-09-10T15:45:42.378796cyberdyne sshd[570658]: Failed password for root from 129.211.45.88 port 40338 ssh2
2020-09-10T15:48:48.287327cyberdyne sshd[570873]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=129.211.45.88  user=root
2020-09-10T15:48:50.163153cyberdyne sshd[570873]: Failed password for root from 129.211.45.88 port 43904 ssh2
...
2020-09-10 22:56:30
139.59.43.196 attackspambots
139.59.43.196 - - [10/Sep/2020:15:15:08 +0200] "POST /xmlrpc.php HTTP/1.1" 403 15712 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
139.59.43.196 - - [10/Sep/2020:15:40:12 +0200] "POST /xmlrpc.php HTTP/1.1" 403 11292 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
...
2020-09-10 22:35:36
190.146.87.202 attackbotsspam
IP blocked
2020-09-10 23:05:30
159.203.242.122 attack
$f2bV_matches
2020-09-10 22:48:34
172.81.248.199 attack
Sep 10 07:47:18 localhost sshd\[14329\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=172.81.248.199  user=root
Sep 10 07:47:20 localhost sshd\[14329\]: Failed password for root from 172.81.248.199 port 43924 ssh2
Sep 10 08:00:44 localhost sshd\[14564\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=172.81.248.199  user=root
...
2020-09-10 22:48:03
220.66.155.2 attackbotsspam
Dovecot Invalid User Login Attempt.
2020-09-10 22:46:41
222.186.30.57 attackspambots
$f2bV_matches
2020-09-10 23:00:45
85.99.207.44 attackspambots
Unauthorized connection attempt from IP address 85.99.207.44 on Port 445(SMB)
2020-09-10 22:32:14
200.162.216.152 attackbots
1599670544 - 09/09/2020 18:55:44 Host: 200.162.216.152/200.162.216.152 Port: 445 TCP Blocked
2020-09-10 22:41:36
181.53.251.181 attackbots
$f2bV_matches
2020-09-10 23:10:28
40.87.24.129 attack
Forbidden directory scan :: 2020/09/09 20:04:33 [error] 1010#1010: *1898182 access forbidden by rule, client: 40.87.24.129, server: [censored_1], request: "GET /knowledge-base/tech-tips... HTTP/1.1", host: "www.[censored_1]"
2020-09-10 22:50:10
222.186.175.212 attackspambots
Sep 10 14:35:03 rush sshd[22586]: Failed password for root from 222.186.175.212 port 3554 ssh2
Sep 10 14:35:17 rush sshd[22586]: error: maximum authentication attempts exceeded for root from 222.186.175.212 port 3554 ssh2 [preauth]
Sep 10 14:35:27 rush sshd[22588]: Failed password for root from 222.186.175.212 port 47272 ssh2
...
2020-09-10 22:37:42

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