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 <<>> 104.21.27.4
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 6381
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.27.4.			IN	A

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

;; Query time: 19 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 02:21:02 CST 2022
;; MSG SIZE  rcvd: 104
Host info
Host 4.27.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 4.27.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
122.118.250.99 attackbots
UTC: 2019-12-07 port: 23/tcp
2019-12-08 19:49:04
167.172.164.81 attack
Blocked for port scanning (Port 23 / Telnet brute-force).
Time: Sun Dec 8. 07:16:37 2019 +0100
IP: 167.172.164.81 (DE/Germany/-)

Sample of block hits:
Dec 8 07:16:21 vserv kernel: [586765.484044] Firewall: *TCP_IN Blocked* IN=eth0 OUT= MAC= SRC=167.172.164.81 DST=[removed] LEN=40 TOS=0x00 PREC=0x00 TTL=56 ID=23084 PROTO=TCP SPT=34374 DPT=23 WINDOW=41574 RES=0x00 SYN URGP=0
Dec 8 07:16:22 vserv kernel: [586766.148183] Firewall: *TCP_IN Blocked* IN=eth0 OUT= MAC= SRC=167.172.164.81 DST=[removed] LEN=40 TOS=0x00 PREC=0x00 TTL=56 ID=23084 PROTO=TCP SPT=34374 DPT=23 WINDOW=41574 RES=0x00 SYN URGP=0
Dec 8 07:16:24 vserv kernel: [586768.572841] Firewall: *TCP_IN Blocked* IN=eth0 OUT= MAC= SRC=167.172.164.81 DST=[removed] LEN=40 TOS=0x00 PREC=0x00 TTL=56 ID=23084 PROTO=TCP SPT=34374 DPT=23 WINDOW=41574 RES=0x00 SYN URGP=0
Dec 8 07:16:25 vserv kernel: [586769.332632] Firewall: *TCP_IN Blocked* IN=eth0 OUT= MAC= SRC=167.172.164.81 DST=[removed] LEN=40 TOS=0x00 PREC=0x00 TTL=56 ID=23084 PROTO=TCP SPT=34374
2019-12-08 19:37:16
123.207.88.97 attackbots
Dec  8 01:56:33 web9 sshd\[15642\]: Invalid user webmaster from 123.207.88.97
Dec  8 01:56:33 web9 sshd\[15642\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=123.207.88.97
Dec  8 01:56:35 web9 sshd\[15642\]: Failed password for invalid user webmaster from 123.207.88.97 port 58368 ssh2
Dec  8 02:04:16 web9 sshd\[17012\]: Invalid user louvaine from 123.207.88.97
Dec  8 02:04:16 web9 sshd\[17012\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=123.207.88.97
2019-12-08 20:09:08
202.137.155.204 attackspam
$f2bV_matches
2019-12-08 20:04:57
95.53.190.136 attackspam
2019-12-08T06:26:33.513597abusebot-2.cloudsearch.cf sshd\[25164\]: Invalid user admin from 95.53.190.136 port 58507
2019-12-08 19:55:42
124.232.163.91 attack
Dec  8 12:06:30 minden010 sshd[25510]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=124.232.163.91
Dec  8 12:06:32 minden010 sshd[25510]: Failed password for invalid user escalon from 124.232.163.91 port 48880 ssh2
Dec  8 12:13:03 minden010 sshd[32043]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=124.232.163.91
...
2019-12-08 19:43:39
96.242.247.102 attackspambots
$f2bV_matches
2019-12-08 20:10:16
94.191.47.240 attackbotsspam
SSH brutforce
2019-12-08 19:52:28
140.143.163.22 attack
Dec  8 09:50:33 sauna sshd[245628]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=140.143.163.22
Dec  8 09:50:35 sauna sshd[245628]: Failed password for invalid user misselwitz from 140.143.163.22 port 35272 ssh2
...
2019-12-08 20:01:41
107.170.249.243 attackspam
2019-12-08T09:45:21.073239centos sshd\[2329\]: Invalid user krause from 107.170.249.243 port 38384
2019-12-08T09:45:21.082620centos sshd\[2329\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=107.170.249.243
2019-12-08T09:45:23.509547centos sshd\[2329\]: Failed password for invalid user krause from 107.170.249.243 port 38384 ssh2
2019-12-08 19:50:06
222.186.42.4 attack
Dec  8 12:37:09 sd-53420 sshd\[15172\]: User root from 222.186.42.4 not allowed because none of user's groups are listed in AllowGroups
Dec  8 12:37:10 sd-53420 sshd\[15172\]: Failed none for invalid user root from 222.186.42.4 port 16002 ssh2
Dec  8 12:37:10 sd-53420 sshd\[15172\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.42.4  user=root
Dec  8 12:37:12 sd-53420 sshd\[15172\]: Failed password for invalid user root from 222.186.42.4 port 16002 ssh2
Dec  8 12:37:16 sd-53420 sshd\[15172\]: Failed password for invalid user root from 222.186.42.4 port 16002 ssh2
...
2019-12-08 19:39:12
189.112.109.185 attackbots
Dec  8 13:19:40 server sshd\[15371\]: Invalid user edbserv from 189.112.109.185
Dec  8 13:19:40 server sshd\[15371\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=189.112.109.185 
Dec  8 13:19:42 server sshd\[15371\]: Failed password for invalid user edbserv from 189.112.109.185 port 48596 ssh2
Dec  8 13:26:33 server sshd\[17556\]: Invalid user ahti from 189.112.109.185
Dec  8 13:26:33 server sshd\[17556\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=189.112.109.185 
...
2019-12-08 19:56:53
171.237.170.34 attack
$f2bV_matches
2019-12-08 19:31:32
114.141.191.238 attack
Dec  8 06:26:50 *** sshd[6594]: Invalid user login from 114.141.191.238
2019-12-08 19:34:09
222.186.175.220 attackspam
SSH Brute-Force reported by Fail2Ban
2019-12-08 19:51:13

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