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 <<>> 104.21.21.53
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 8771
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.21.53.			IN	A

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

;; Query time: 74 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 02:16:04 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 53.21.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 53.21.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
27.78.69.208 attackspambots
Unauthorized connection attempt from IP address 27.78.69.208 on Port 445(SMB)
2020-03-24 02:57:06
122.51.86.120 attackbotsspam
Mar 23 16:34:11 ns382633 sshd\[16673\]: Invalid user air from 122.51.86.120 port 45974
Mar 23 16:34:11 ns382633 sshd\[16673\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=122.51.86.120
Mar 23 16:34:13 ns382633 sshd\[16673\]: Failed password for invalid user air from 122.51.86.120 port 45974 ssh2
Mar 23 16:45:56 ns382633 sshd\[19245\]: Invalid user cw from 122.51.86.120 port 37640
Mar 23 16:45:56 ns382633 sshd\[19245\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=122.51.86.120
2020-03-24 03:07:35
220.88.1.208 attack
DATE:2020-03-23 19:20:22, IP:220.88.1.208, PORT:ssh SSH brute force auth (docker-dc)
2020-03-24 02:56:29
103.137.113.102 attackbots
Unauthorized connection attempt from IP address 103.137.113.102 on Port 445(SMB)
2020-03-24 03:25:57
37.49.227.109 attackbots
ET CINS Active Threat Intelligence Poor Reputation IP group 18 - port: 33848 proto: UDP cat: Misc Attack
2020-03-24 02:49:25
121.99.229.34 attackbots
Mar 23 15:46:10 l02a.shelladdress.co.uk proftpd[28044] 127.0.0.1 (::ffff:121.99.229.34[::ffff:121.99.229.34]): USER www: no such user found from ::ffff:121.99.229.34 [::ffff:121.99.229.34] to ::ffff:185.47.61.72:21
Mar 23 15:46:12 l02a.shelladdress.co.uk proftpd[28052] 127.0.0.1 (::ffff:121.99.229.34[::ffff:121.99.229.34]): USER www: no such user found from ::ffff:121.99.229.34 [::ffff:121.99.229.34] to ::ffff:185.47.61.72:21
Mar 23 15:46:13 l02a.shelladdress.co.uk proftpd[28060] 127.0.0.1 (::ffff:121.99.229.34[::ffff:121.99.229.34]): USER www: no such user found from ::ffff:121.99.229.34 [::ffff:121.99.229.34] to ::ffff:185.47.61.72:21
2020-03-24 02:50:55
45.143.220.28 attackbots
45.143.220.28 was recorded 7 times by 2 hosts attempting to connect to the following ports: 5060. Incident counter (4h, 24h, all-time): 7, 25, 168
2020-03-24 03:02:27
139.28.206.11 attack
-
2020-03-24 02:52:54
41.33.197.133 attack
Unauthorized connection attempt from IP address 41.33.197.133 on Port 445(SMB)
2020-03-24 03:17:43
103.108.144.245 attackbots
$f2bV_matches
2020-03-24 02:54:58
61.155.110.210 attackbots
Mar 23 18:24:15 mail sshd\[1148\]: Invalid user student from 61.155.110.210
Mar 23 18:24:15 mail sshd\[1148\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=61.155.110.210
Mar 23 18:24:17 mail sshd\[1148\]: Failed password for invalid user student from 61.155.110.210 port 34124 ssh2
...
2020-03-24 02:51:54
45.95.168.159 attackbots
2020-03-23 15:55:36,890 fail2ban.filter         [1840]: INFO    [plesk-postfix] Found 45.95.168.159 - 2020-03-23 15:55:36
2020-03-23 15:55:36,891 fail2ban.filter         [1840]: INFO    [plesk-postfix] Found 45.95.168.159 - 2020-03-23 15:55:36
2020-03-23 15:55:37,021 fail2ban.filter         [1840]: INFO    [plesk-postfix] Found 45.95.168.159 - 2020-03-23 15:55:37
2020-03-23 15:55:37,023 fail2ban.filter         [1840]: INFO    [plesk-postfix] Found 45.95.168.159 - 2020-03-23 15:55:37
2020-03-23 15:55:37,028 fail2ban.filter         [1840]: INFO    [plesk-postfix] Found 45.95.168.159 - 2020-03-23 15:55:37
2020-03-23 15:55:37,030 fail2ban.filter         [1840]: INFO    [plesk-postfix] Found 45.95.168.159 - 2020-03-23 15:55:37
2020-03-23 15:55:37,103 fail2ban.filter         [1840]: INFO    [plesk-postfix] Found 45.95.168.159 - 2020-03-23 15:55:37
2020-03-23 15:55:37,105 fail2ban.filter         [1840]: INFO    [plesk-postfix] Found 45.95.168.159 - 2020-03-23 15:55:37
2020-03-........
-------------------------------
2020-03-24 03:06:11
122.117.16.182 attackbots
port
2020-03-24 03:07:09
51.255.149.135 attackbotsspam
Mar 23 15:27:04 vps46666688 sshd[16523]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.255.149.135
Mar 23 15:27:07 vps46666688 sshd[16523]: Failed password for invalid user kc from 51.255.149.135 port 1364 ssh2
...
2020-03-24 02:55:28
137.220.138.137 attack
Mar 23 18:11:14 vmd48417 sshd[25181]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=137.220.138.137
2020-03-24 02:58:20

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