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:
b
Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 104.21.4.173
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 32035
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.4.173.			IN	A

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

;; Query time: 25 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Thu Feb 17 21:46:01 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 173.4.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 173.4.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
222.186.42.7 attackspambots
Sep 13 00:25:44 freya sshd[12366]: Disconnected from authenticating user root 222.186.42.7 port 37212 [preauth]
...
2020-09-13 06:32:58
187.191.48.116 attack
Unauthorized connection attempt from IP address 187.191.48.116 on Port 445(SMB)
2020-09-13 06:33:51
104.140.188.50 attack
5432/tcp 23/tcp 5060/tcp...
[2020-07-13/09-12]12pkt,7pt.(tcp)
2020-09-13 06:22:15
174.54.219.215 attack
Sep 12 19:56:52 server2 sshd\[15960\]: Invalid user admin from 174.54.219.215
Sep 12 19:56:54 server2 sshd\[15962\]: Invalid user admin from 174.54.219.215
Sep 12 19:56:55 server2 sshd\[15964\]: Invalid user admin from 174.54.219.215
Sep 12 19:56:56 server2 sshd\[15966\]: Invalid user admin from 174.54.219.215
Sep 12 19:56:57 server2 sshd\[15968\]: Invalid user admin from 174.54.219.215
Sep 12 19:56:58 server2 sshd\[15972\]: Invalid user admin from 174.54.219.215
2020-09-13 06:31:03
222.186.180.6 attack
(sshd) Failed SSH login from 222.186.180.6 (CN/China/-): 5 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SSHD; Logs: Sep 12 18:37:42 optimus sshd[2241]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.180.6  user=root
Sep 12 18:37:42 optimus sshd[2239]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.180.6  user=root
Sep 12 18:37:42 optimus sshd[2247]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.180.6  user=root
Sep 12 18:37:42 optimus sshd[2243]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.180.6  user=root
Sep 12 18:37:42 optimus sshd[2245]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.180.6  user=root
2020-09-13 06:40:42
69.119.85.43 attackspambots
SSH Invalid Login
2020-09-13 06:39:00
90.188.255.142 attackspambots
law-Joomla User : try to access forms...
2020-09-13 06:35:44
94.102.49.109 attackspambots
Sep 12 23:04:38 *hidden* kernel: [UFW BLOCK] IN=eth0 OUT= MAC=00:50:56:3e:4a:cc:28:99:3a:4d:23:91:08:00 SRC=94.102.49.109 DST=173.212.244.83 LEN=40 TOS=0x00 PREC=0x00 TTL=248 ID=4698 PROTO=TCP SPT=45855 DPT=2865 WINDOW=1024 RES=0x00 SYN URGP=0 Sep 12 23:38:08 *hidden* kernel: [UFW BLOCK] IN=eth0 OUT= MAC=00:50:56:3e:4a:cc:28:99:3a:4d:23:91:08:00 SRC=94.102.49.109 DST=173.212.244.83 LEN=40 TOS=0x00 PREC=0x00 TTL=248 ID=58396 PROTO=TCP SPT=45855 DPT=2883 WINDOW=1024 RES=0x00 SYN URGP=0 Sep 13 00:05:43 *hidden* kernel: [UFW BLOCK] IN=eth0 OUT= MAC=00:50:56:3e:4a:cc:28:99:3a:4d:23:91:08:00 SRC=94.102.49.109 DST=173.212.244.83 LEN=40 TOS=0x00 PREC=0x00 TTL=248 ID=47512 PROTO=TCP SPT=45855 DPT=2825 WINDOW=1024 RES=0x00 SYN URGP=0 Sep 13 00:15:33 *hidden* kernel: [UFW BLOCK] IN=eth0 OUT= MAC=00:50:56:3e:4a:cc:28:99:3a:4d:23:91:08:00 SRC=94.102.49.109 DST=173.212.244.83 LEN=40 TOS=0x00 PREC=0x00 TTL=248 ID=38682 PROTO=TCP SPT=45855 DPT=2889 WINDOW=1024 RES=0x00 SYN URGP=0 Sep 13 00:15:41 *hidd
...
2020-09-13 06:21:02
211.80.102.182 attack
Sep 12 21:51:47 instance-2 sshd[22461]: Failed password for root from 211.80.102.182 port 47162 ssh2
Sep 12 21:59:40 instance-2 sshd[22692]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=211.80.102.182 
Sep 12 21:59:43 instance-2 sshd[22692]: Failed password for invalid user water from 211.80.102.182 port 59109 ssh2
2020-09-13 06:02:09
61.157.168.132 attack
 TCP (SYN) 61.157.168.132:3356 -> port 1620, len 44
2020-09-13 06:29:03
152.136.213.72 attack
2020-09-12 16:55:50.950448-0500  localhost sshd[86021]: Failed password for invalid user newadmin from 152.136.213.72 port 51902 ssh2
2020-09-13 06:17:57
193.169.253.169 attack
Sep 12 22:17:21 galaxy event: galaxy/lswi: smtp: database@uni-potsdam.de [193.169.253.169] authentication failure using internet password
Sep 12 22:17:21 galaxy event: galaxy/lswi: smtp: database@uni-potsdam.de [193.169.253.169] authentication failure using internet password
Sep 12 22:17:21 galaxy event: galaxy/lswi: smtp: database@uni-potsdam.de [193.169.253.169] authentication failure using internet password
Sep 12 22:17:22 galaxy event: galaxy/lswi: smtp: database@uni-potsdam.de [193.169.253.169] authentication failure using internet password
Sep 12 22:17:22 galaxy event: galaxy/lswi: smtp: database@uni-potsdam.de [193.169.253.169] authentication failure using internet password
...
2020-09-13 06:13:08
188.217.181.18 attackspam
Sep 12 22:25:54 ns41 sshd[3728]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=188.217.181.18
Sep 12 22:25:56 ns41 sshd[3728]: Failed password for invalid user legname from 188.217.181.18 port 34656 ssh2
Sep 12 22:29:47 ns41 sshd[3868]: Failed password for root from 188.217.181.18 port 47874 ssh2
2020-09-13 06:27:17
37.49.230.122 attackbots
Attempted to login using an invalid username
2020-09-13 06:36:33
194.26.25.119 attack
Multiport scan : 92 ports scanned 40 128 129 145 180 186 237 285 401 414 418 425 433 449 457 462 482 522 531 605 611 618 647 660 682 691 717 730 739 771 827 843 859 868 885 923 937 945 978 994 997 1010 1026 1057 1066 1078 1089 1110 1121 1122 1137 1153 1155 1226 1230 1251 1292 1308 1324 1340 1356 1385 1410 1419 1435 1436 1438 1447 1463 1552 1584 1597 1654 1687 1703 1712 1735 1751 1753 1767 1777 1784 1798 1799 1815 1816 1846 1880 1893 .....
2020-09-13 06:06:22

Recently Reported IPs

104.21.4.171 104.21.4.176 104.21.4.180 104.21.4.181
104.21.4.182 104.21.4.184 104.21.4.187 104.21.4.188
90.67.126.185 104.21.4.189 104.21.4.19 104.21.4.191
216.6.239.193 104.21.4.192 104.21.4.195 104.21.4.20
104.21.4.202 76.1.128.132 104.21.4.203 104.21.4.205