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 <<>> 104.21.66.75
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 17399
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.66.75.			IN	A

;; AUTHORITY SECTION:
.			419	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022021701 1800 900 604800 86400

;; Query time: 58 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 02:45:15 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 75.66.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 75.66.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
180.245.53.89 attackbotsspam
WordPress brute force
2020-03-14 07:31:25
151.250.253.43 attackbots
Unauthorized connection attempt from IP address 151.250.253.43 on Port 445(SMB)
2020-03-14 07:30:29
106.13.63.24 attackbotsspam
Mar 14 04:08:48 itv-usvr-01 sshd[1643]: Invalid user rust from 106.13.63.24
Mar 14 04:08:48 itv-usvr-01 sshd[1643]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.13.63.24
Mar 14 04:08:48 itv-usvr-01 sshd[1643]: Invalid user rust from 106.13.63.24
Mar 14 04:08:49 itv-usvr-01 sshd[1643]: Failed password for invalid user rust from 106.13.63.24 port 47938 ssh2
Mar 14 04:14:27 itv-usvr-01 sshd[1998]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.13.63.24  user=root
Mar 14 04:14:29 itv-usvr-01 sshd[1998]: Failed password for root from 106.13.63.24 port 58518 ssh2
2020-03-14 07:57:58
74.121.199.162 attack
WordPress brute force
2020-03-14 07:23:46
181.115.248.62 attackspam
2020-03-13 22:14:40 H=\(\[181.115.248.62\]\) \[181.115.248.62\]:2296 I=\[193.107.88.166\]:25 F=\ rejected RCPT \: Sender verify failed
2020-03-13 22:14:55 H=\(\[181.115.248.62\]\) \[181.115.248.62\]:40540 I=\[193.107.88.166\]:25 F=\ rejected RCPT \: Sender verify failed
2020-03-13 22:15:08 H=\(\[181.115.248.62\]\) \[181.115.248.62\]:19017 I=\[193.107.88.166\]:25 F=\ rejected RCPT \: Sender verify failed
...
2020-03-14 07:26:17
114.237.188.138 attack
SpamScore above: 10.0
2020-03-14 07:45:41
185.36.81.57 attackspambots
Mar 13 23:17:06 mail postfix/smtpd\[6818\]: warning: unknown\[185.36.81.57\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6\
Mar 13 23:54:33 mail postfix/smtpd\[7635\]: warning: unknown\[185.36.81.57\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6\
Mar 14 00:15:12 mail postfix/smtpd\[7796\]: warning: unknown\[185.36.81.57\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6\
Mar 14 00:36:16 mail postfix/smtpd\[8796\]: warning: unknown\[185.36.81.57\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6\
2020-03-14 07:50:03
178.211.171.248 attackbotsspam
Unauthorized connection attempt from IP address 178.211.171.248 on Port 445(SMB)
2020-03-14 07:27:11
77.75.73.26 attackspam
IP Ban Report :  
 https://help-dysk.pl/wordpress-firewall-plugins/ip/77.75.73.26/ 
 
 CZ - 1H : (24)  
 Protection Against DDoS WordPress plugin :  
 "odzyskiwanie danych help-dysk" 
 IP Address Ranges by Country : CZ 
 NAME ASN : ASN43037 
 
 IP : 77.75.73.26 
 
 CIDR : 77.75.72.0/23 
 
 PREFIX COUNT : 6 
 
 UNIQUE IP COUNT : 3072 
 
 
 ATTACKS DETECTED ASN43037 :  
  1H - 1 
  3H - 1 
  6H - 1 
 12H - 1 
 24H - 1 
 
 DateTime : 2020-03-13 22:15:11 
 
 INFO : Looking for resource vulnerabilities 403 Detected and Blocked by ADMIN  - data recovery
2020-03-14 07:19:59
34.80.135.20 attackbots
SSH brute force attempt
2020-03-14 07:59:29
13.224.151.229 attackspambots
[portscan] Port scan
2020-03-14 07:17:13
154.16.202.232 attackspam
Invalid user yangweifei from 154.16.202.232 port 39858
2020-03-14 07:40:50
216.74.103.211 attackspam
Chat Spam
2020-03-14 07:46:46
46.246.39.165 attack
WordPress brute force
2020-03-14 07:24:47
185.175.93.14 attackbots
Mar 14 00:00:58 debian-2gb-nbg1-2 kernel: \[6399589.829954\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:0e:18:f4:d2:74:7f:6e:37:e3:08:00 SRC=185.175.93.14 DST=195.201.40.59 LEN=40 TOS=0x00 PREC=0x00 TTL=247 ID=17587 PROTO=TCP SPT=55463 DPT=7544 WINDOW=1024 RES=0x00 SYN URGP=0
2020-03-14 07:47:10

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