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 <<>> 104.21.20.153
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 7511
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.20.153.			IN	A

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

;; Query time: 24 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 02:15:12 CST 2022
;; MSG SIZE  rcvd: 106
Host info
Host 153.20.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 153.20.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
187.162.51.63 attackspam
Apr  2 06:40:53 Tower sshd[34286]: Connection from 187.162.51.63 port 42236 on 192.168.10.220 port 22 rdomain ""
Apr  2 06:40:53 Tower sshd[34286]: Failed password for root from 187.162.51.63 port 42236 ssh2
Apr  2 06:40:53 Tower sshd[34286]: Received disconnect from 187.162.51.63 port 42236:11: Bye Bye [preauth]
Apr  2 06:40:53 Tower sshd[34286]: Disconnected from authenticating user root 187.162.51.63 port 42236 [preauth]
2020-04-02 19:20:07
139.201.164.73 attackbotsspam
(ftpd) Failed FTP login from 139.201.164.73 (CN/China/-): 10 in the last 3600 secs
2020-04-02 19:29:35
124.156.50.52 attack
Unauthorized connection attempt detected from IP address 124.156.50.52 to port 3689
2020-04-02 20:04:17
185.194.49.132 attackspam
Apr  2 01:20:36 php1 sshd\[4588\]: Invalid user sysadmin from 185.194.49.132
Apr  2 01:20:36 php1 sshd\[4588\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=185.194.49.132
Apr  2 01:20:39 php1 sshd\[4588\]: Failed password for invalid user sysadmin from 185.194.49.132 port 36621 ssh2
Apr  2 01:24:00 php1 sshd\[5009\]: Invalid user test from 185.194.49.132
Apr  2 01:24:00 php1 sshd\[5009\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=185.194.49.132
2020-04-02 19:36:54
201.62.79.25 attackspambots
Apr  2 05:51:08 debian-2gb-nbg1-2 kernel: \[8058514.005869\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:0e:18:f4:d2:74:7f:6e:37:e3:08:00 SRC=201.62.79.25 DST=195.201.40.59 LEN=44 TOS=0x00 PREC=0x00 TTL=52 ID=53824 PROTO=TCP SPT=40891 DPT=26 WINDOW=43403 RES=0x00 SYN URGP=0
2020-04-02 19:45:21
177.135.93.227 attackbots
Apr  2 08:20:33 DAAP sshd[497]: Invalid user zookeeper from 177.135.93.227 port 58158
Apr  2 08:20:33 DAAP sshd[497]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.135.93.227
Apr  2 08:20:33 DAAP sshd[497]: Invalid user zookeeper from 177.135.93.227 port 58158
Apr  2 08:20:35 DAAP sshd[497]: Failed password for invalid user zookeeper from 177.135.93.227 port 58158 ssh2
Apr  2 08:24:48 DAAP sshd[542]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.135.93.227  user=root
Apr  2 08:24:50 DAAP sshd[542]: Failed password for root from 177.135.93.227 port 60180 ssh2
...
2020-04-02 19:53:28
140.143.136.89 attackspam
Apr  1 18:55:24 s158375 sshd[2618]: Failed password for root from 140.143.136.89 port 46870 ssh2
2020-04-02 19:23:13
106.75.86.217 attack
(sshd) Failed SSH login from 106.75.86.217 (CN/China/-): 5 in the last 3600 secs
2020-04-02 19:40:12
31.184.177.6 attackspam
Apr  2 05:41:58 v22019038103785759 sshd\[8342\]: Invalid user sunc from 31.184.177.6 port 57534
Apr  2 05:41:58 v22019038103785759 sshd\[8342\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=31.184.177.6
Apr  2 05:42:00 v22019038103785759 sshd\[8342\]: Failed password for invalid user sunc from 31.184.177.6 port 57534 ssh2
Apr  2 05:51:04 v22019038103785759 sshd\[8859\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=31.184.177.6  user=root
Apr  2 05:51:06 v22019038103785759 sshd\[8859\]: Failed password for root from 31.184.177.6 port 53216 ssh2
...
2020-04-02 19:48:32
106.13.41.93 attackspambots
SSH invalid-user multiple login try
2020-04-02 19:15:19
124.74.248.218 attackbots
Apr  2 10:45:22 mail sshd[1337]: Invalid user zhubo from 124.74.248.218
Apr  2 10:45:22 mail sshd[1337]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=124.74.248.218
Apr  2 10:45:22 mail sshd[1337]: Invalid user zhubo from 124.74.248.218
Apr  2 10:45:23 mail sshd[1337]: Failed password for invalid user zhubo from 124.74.248.218 port 59426 ssh2
...
2020-04-02 19:40:45
209.17.97.74 attackbots
port scan and connect, tcp 80 (http)
2020-04-02 19:30:21
222.186.175.148 attackbots
Apr  2 11:48:38 localhost sshd[22329]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.175.148  user=root
Apr  2 11:48:40 localhost sshd[22329]: Failed password for root from 222.186.175.148 port 35840 ssh2
Apr  2 11:48:43 localhost sshd[22329]: Failed password for root from 222.186.175.148 port 35840 ssh2
Apr  2 11:48:38 localhost sshd[22329]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.175.148  user=root
Apr  2 11:48:40 localhost sshd[22329]: Failed password for root from 222.186.175.148 port 35840 ssh2
Apr  2 11:48:43 localhost sshd[22329]: Failed password for root from 222.186.175.148 port 35840 ssh2
Apr  2 11:48:38 localhost sshd[22329]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.175.148  user=root
Apr  2 11:48:40 localhost sshd[22329]: Failed password for root from 222.186.175.148 port 35840 ssh2
Apr  2 11:48:43 localhost sshd[22
...
2020-04-02 19:49:01
198.108.67.55 attackbotsspam
port
2020-04-02 19:28:05
49.236.203.163 attackbots
Apr  2 10:06:29 localhost sshd[12265]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.236.203.163  user=root
Apr  2 10:06:31 localhost sshd[12265]: Failed password for root from 49.236.203.163 port 36402 ssh2
Apr  2 10:11:05 localhost sshd[12719]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.236.203.163  user=root
Apr  2 10:11:07 localhost sshd[12719]: Failed password for root from 49.236.203.163 port 47030 ssh2
Apr  2 10:15:46 localhost sshd[13158]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.236.203.163  user=root
Apr  2 10:15:48 localhost sshd[13158]: Failed password for root from 49.236.203.163 port 57650 ssh2
...
2020-04-02 19:50:44

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