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 <<>> 104.21.42.239
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 2734
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.42.239.			IN	A

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

;; Query time: 20 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 02:29:48 CST 2022
;; MSG SIZE  rcvd: 106
Host info
Host 239.42.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 239.42.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
54.36.108.162 attackbotsspam
Unauthorized connection attempt detected from IP address 54.36.108.162 to port 8000
2020-08-08 16:18:46
119.90.61.10 attackbotsspam
2020-08-08T05:45:16.428824amanda2.illicoweb.com sshd\[1491\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=119.90.61.10  user=root
2020-08-08T05:45:18.258654amanda2.illicoweb.com sshd\[1491\]: Failed password for root from 119.90.61.10 port 50916 ssh2
2020-08-08T05:50:03.428417amanda2.illicoweb.com sshd\[1853\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=119.90.61.10  user=root
2020-08-08T05:50:05.995404amanda2.illicoweb.com sshd\[1853\]: Failed password for root from 119.90.61.10 port 56006 ssh2
2020-08-08T05:54:50.145739amanda2.illicoweb.com sshd\[2341\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=119.90.61.10  user=root
...
2020-08-08 16:04:37
83.38.120.177 attack
Unauthorized IMAP connection attempt
2020-08-08 16:37:48
199.217.104.246 attackbotsspam
Unauthorized IMAP connection attempt
2020-08-08 15:56:48
77.93.102.154 attackbots
MAIL: User Login Brute Force Attempt
2020-08-08 16:18:32
40.89.179.119 attack
Unauthorized IMAP connection attempt
2020-08-08 16:17:30
167.99.67.175 attack
Aug  8 08:20:27 root sshd[27630]: Failed password for root from 167.99.67.175 port 56332 ssh2
Aug  8 08:25:51 root sshd[28237]: Failed password for root from 167.99.67.175 port 37210 ssh2
...
2020-08-08 16:21:41
79.10.127.180 attackspambots
" "
2020-08-08 16:16:38
146.0.189.90 attack
Unauthorized IMAP connection attempt
2020-08-08 16:06:49
51.91.56.33 attack
detected by Fail2Ban
2020-08-08 16:34:33
187.176.33.44 attack
Automatic report - Port Scan Attack
2020-08-08 16:06:28
45.55.180.7 attack
Aug  8 08:29:40 mellenthin sshd[32497]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=45.55.180.7  user=root
Aug  8 08:29:41 mellenthin sshd[32497]: Failed password for invalid user root from 45.55.180.7 port 44520 ssh2
2020-08-08 16:08:19
5.62.43.134 attack
Unauthorized IMAP connection attempt
2020-08-08 16:34:09
177.222.136.218 attack
Automatic report - Port Scan Attack
2020-08-08 16:23:01
183.89.214.96 attackspam
Dovecot Invalid User Login Attempt.
2020-08-08 16:24:49

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