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: None

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 <<>> 104.21.53.21
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 25973
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.53.21.			IN	A

;; AUTHORITY SECTION:
.			551	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022021702 1800 900 604800 86400

;; Query time: 115 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 10:12:54 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 21.53.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 21.53.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
198.108.66.30 attackspambots
3306/tcp 102/tcp 623/tcp...
[2019-06-20/08-12]10pkt,5pt.(tcp),2tp.(icmp)
2019-08-13 05:40:55
66.70.130.149 attackspam
Aug 12 20:52:18 rpi sshd[15795]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=66.70.130.149 
Aug 12 20:52:20 rpi sshd[15795]: Failed password for invalid user kundan from 66.70.130.149 port 42568 ssh2
2019-08-13 06:03:16
51.38.234.54 attackspam
Aug 12 14:12:18 Proxmox sshd\[3322\]: User root from 51.38.234.54 not allowed because not listed in AllowUsers
Aug 12 14:12:18 Proxmox sshd\[3322\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.38.234.54  user=root
Aug 12 14:12:20 Proxmox sshd\[3322\]: Failed password for invalid user root from 51.38.234.54 port 57192 ssh2
2019-08-13 06:03:51
51.79.53.78 attackspam
Aug 12 17:33:15 MK-Soft-VM3 sshd\[3748\]: Invalid user elastic from 51.79.53.78 port 54568
Aug 12 17:33:15 MK-Soft-VM3 sshd\[3748\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.79.53.78
Aug 12 17:33:16 MK-Soft-VM3 sshd\[3748\]: Failed password for invalid user elastic from 51.79.53.78 port 54568 ssh2
...
2019-08-13 05:40:08
221.238.192.25 attackbots
2019-08-12T14:12:19.361253stark.klein-stark.info sshd\[22165\]: Invalid user britney from 221.238.192.25 port 57338
2019-08-12T14:12:19.364596stark.klein-stark.info sshd\[22165\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=221.238.192.25
2019-08-12T14:12:20.839011stark.klein-stark.info sshd\[22165\]: Failed password for invalid user britney from 221.238.192.25 port 57338 ssh2
...
2019-08-13 06:01:57
185.211.245.170 attackspambots
Aug 12 23:37:21 relay postfix/smtpd\[25565\]: warning: unknown\[185.211.245.170\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Aug 12 23:37:39 relay postfix/smtpd\[14722\]: warning: unknown\[185.211.245.170\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Aug 12 23:48:06 relay postfix/smtpd\[14722\]: warning: unknown\[185.211.245.170\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Aug 12 23:48:21 relay postfix/smtpd\[19393\]: warning: unknown\[185.211.245.170\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Aug 12 23:51:52 relay postfix/smtpd\[15358\]: warning: unknown\[185.211.245.170\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
...
2019-08-13 05:58:38
54.39.49.69 attack
Invalid user applmgr from 54.39.49.69 port 43354
2019-08-13 06:05:03
84.217.20.102 attackbots
scan r
2019-08-13 05:33:59
2a01:7e00::f03c:91ff:fece:6f0b attackspambots
7547/tcp 3389/tcp 5900/tcp...
[2019-08-09/12]16pkt,8pt.(tcp)
2019-08-13 06:01:29
220.95.64.104 attack
2323/tcp 23/tcp...
[2019-07-24/08-12]5pkt,2pt.(tcp)
2019-08-13 05:29:02
85.144.226.170 attackbotsspam
Invalid user xrms from 85.144.226.170 port 43372
2019-08-13 05:51:00
184.105.139.71 attack
389/tcp 3389/tcp 9200/tcp...
[2019-06-13/08-12]33pkt,13pt.(tcp),1pt.(udp)
2019-08-13 05:43:32
212.114.57.53 attackbots
Aug 12 00:56:13 *** sshd[24520]: Failed password for invalid user tobias from 212.114.57.53 port 42296 ssh2
2019-08-13 05:59:21
142.93.218.128 attack
Aug 12 23:57:14 localhost sshd\[27631\]: Invalid user castis from 142.93.218.128 port 60656
Aug 12 23:57:14 localhost sshd\[27631\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=142.93.218.128
Aug 12 23:57:16 localhost sshd\[27631\]: Failed password for invalid user castis from 142.93.218.128 port 60656 ssh2
2019-08-13 05:57:46
149.56.25.3 attackspam
www.goldgier.de 149.56.25.3 \[12/Aug/2019:20:11:29 +0200\] "POST /wp-login.php HTTP/1.1" 200 8722 "-" "Mozilla/5.0 \(X11\; Ubuntu\; Linux x86_64\; rv:62.0\) Gecko/20100101 Firefox/62.0"
www.goldgier.de 149.56.25.3 \[12/Aug/2019:20:11:30 +0200\] "POST /wp-login.php HTTP/1.1" 200 8723 "-" "Mozilla/5.0 \(X11\; Ubuntu\; Linux x86_64\; rv:62.0\) Gecko/20100101 Firefox/62.0"
2019-08-13 05:40:33

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