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 <<>> 104.21.66.71
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 52202
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.66.71.			IN	A

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

;; Query time: 17 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 10:16:48 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 71.66.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 71.66.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
45.141.87.6 attackbotsspam
45.141.87.6 - - [01/Oct/2020:18:28:10 -0300] "\x03" 400 226
2020-10-03 02:30:09
193.106.175.55 attackspambots
2020-10-02 04:05:57.692272-0500  localhost smtpd[17887]: NOQUEUE: reject: RCPT from unknown[193.106.175.55]: 554 5.7.1 Service unavailable; Client host [193.106.175.55] blocked using zen.spamhaus.org; https://www.spamhaus.org/sbl/query/SBL495727; from= to= proto=ESMTP helo=
2020-10-03 02:58:20
200.160.116.25 attack
1601641058 - 10/02/2020 14:17:38 Host: 200.160.116.25/200.160.116.25 Port: 445 TCP Blocked
2020-10-03 02:35:59
212.73.81.242 attackbots
Invalid user train5 from 212.73.81.242 port 43322
2020-10-03 02:31:45
118.25.12.187 attack
SCAN: Host Sweep CloudCIX Reconnaissance Scan Detected, PTR: PTR record not found
2020-10-03 02:46:48
201.149.49.146 attackbotsspam
Oct  2 19:34:06 h2829583 sshd[1608]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=201.149.49.146
2020-10-03 02:30:49
51.161.45.174 attackbots
Invalid user xxx from 51.161.45.174 port 44398
2020-10-03 02:33:28
119.29.144.236 attackbots
Tried sshing with brute force.
2020-10-03 02:33:41
222.186.31.166 attack
Oct  2 20:42:55 vpn01 sshd[27173]: Failed password for root from 222.186.31.166 port 31002 ssh2
...
2020-10-03 02:44:32
91.190.52.81 attackbotsspam
Unauthorized connection attempt from IP address 91.190.52.81 on Port 445(SMB)
2020-10-03 02:38:07
77.112.68.242 attackspam
Unauthorized admin access - /admin/css/datepicker.css?v=913-new-social-icons92eae4f2550d5f47
2020-10-03 02:28:05
89.163.148.157 attackspam
 TCP (SYN) 89.163.148.157:20310 -> port 23, len 44
2020-10-03 03:01:05
174.138.52.50 attackbotsspam
2020-10-02T16:24:04.666077abusebot-3.cloudsearch.cf sshd[31215]: Invalid user server from 174.138.52.50 port 54140
2020-10-02T16:24:04.671830abusebot-3.cloudsearch.cf sshd[31215]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=174.138.52.50
2020-10-02T16:24:04.666077abusebot-3.cloudsearch.cf sshd[31215]: Invalid user server from 174.138.52.50 port 54140
2020-10-02T16:24:06.204958abusebot-3.cloudsearch.cf sshd[31215]: Failed password for invalid user server from 174.138.52.50 port 54140 ssh2
2020-10-02T16:31:37.624147abusebot-3.cloudsearch.cf sshd[31278]: Invalid user liang from 174.138.52.50 port 59568
2020-10-02T16:31:37.629670abusebot-3.cloudsearch.cf sshd[31278]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=174.138.52.50
2020-10-02T16:31:37.624147abusebot-3.cloudsearch.cf sshd[31278]: Invalid user liang from 174.138.52.50 port 59568
2020-10-02T16:31:39.353344abusebot-3.cloudsearch.cf sshd[31278]: Fai
...
2020-10-03 02:47:40
128.199.120.132 attackbotsspam
(sshd) Failed SSH login from 128.199.120.132 (SG/Singapore/-): 5 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SSHD; Logs: Oct  2 14:27:20 server4 sshd[13403]: Invalid user RPM from 128.199.120.132
Oct  2 14:27:20 server4 sshd[13403]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=128.199.120.132 
Oct  2 14:27:22 server4 sshd[13403]: Failed password for invalid user RPM from 128.199.120.132 port 54390 ssh2
Oct  2 14:34:14 server4 sshd[17459]: Invalid user elasticsearch from 128.199.120.132
Oct  2 14:34:14 server4 sshd[17459]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=128.199.120.132
2020-10-03 02:43:41
180.76.54.123 attackspam
[N10.H2.VM2] Port Scanner Detected Blocked by UFW
2020-10-03 03:05:02

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