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:
b
Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 104.21.54.91
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 5575
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.54.91.			IN	A

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

;; Query time: 56 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 10:13:14 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 91.54.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 91.54.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
193.227.47.9 attackbotsspam
Unauthorized connection attempt from IP address 193.227.47.9 on Port 445(SMB)
2019-10-20 00:09:25
80.237.64.19 attackbots
Unauthorized connection attempt from IP address 80.237.64.19 on Port 445(SMB)
2019-10-20 00:27:53
134.73.76.157 attackbots
Postfix DNSBL listed. Trying to send SPAM.
2019-10-19 23:52:54
95.112.58.182 attack
Automatic report - Port Scan Attack
2019-10-20 00:13:09
181.65.234.52 attackspam
Unauthorized connection attempt from IP address 181.65.234.52 on Port 445(SMB)
2019-10-19 23:56:51
185.176.27.86 attackbotsspam
10/19/2019-17:33:22.481808 185.176.27.86 Protocol: 6 ET DROP Dshield Block Listed Source group 1
2019-10-20 00:31:35
51.75.133.167 attackbots
$f2bV_matches
2019-10-19 23:46:18
106.13.46.123 attackspambots
Mar 24 20:26:57 vtv3 sshd\[2801\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.13.46.123  user=root
Mar 24 20:26:59 vtv3 sshd\[2801\]: Failed password for root from 106.13.46.123 port 36088 ssh2
Mar 24 20:33:24 vtv3 sshd\[5232\]: Invalid user jaxson from 106.13.46.123 port 42272
Mar 24 20:33:24 vtv3 sshd\[5232\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.13.46.123
Mar 24 20:33:26 vtv3 sshd\[5232\]: Failed password for invalid user jaxson from 106.13.46.123 port 42272 ssh2
May 19 22:46:20 vtv3 sshd\[22483\]: Invalid user ken from 106.13.46.123 port 34736
May 19 22:46:20 vtv3 sshd\[22483\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.13.46.123
May 19 22:46:22 vtv3 sshd\[22483\]: Failed password for invalid user ken from 106.13.46.123 port 34736 ssh2
May 19 22:52:02 vtv3 sshd\[25427\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=s
2019-10-20 00:08:05
109.252.26.11 attackspambots
Unauthorized connection attempt from IP address 109.252.26.11 on Port 445(SMB)
2019-10-20 00:26:11
123.26.202.249 attackbotsspam
Unauthorized connection attempt from IP address 123.26.202.249 on Port 445(SMB)
2019-10-19 23:53:25
59.127.209.246 attackbots
IP Ban Report :  
 https://help-dysk.pl/wordpress-firewall-plugins/ip/59.127.209.246/ 
 
 TW - 1H : (113)  
 Protection Against DDoS WordPress plugin :  
 "odzyskiwanie danych help-dysk" 
 IP Address Ranges by Country : TW 
 NAME ASN : ASN3462 
 
 IP : 59.127.209.246 
 
 CIDR : 59.127.128.0/17 
 
 PREFIX COUNT : 390 
 
 UNIQUE IP COUNT : 12267520 
 
 
 ATTACKS DETECTED ASN3462 :  
  1H - 3 
  3H - 9 
  6H - 22 
 12H - 43 
 24H - 96 
 
 DateTime : 2019-10-19 14:01:10 
 
 INFO : Port Scan TELNET Detected and Blocked by ADMIN  - data recovery
2019-10-19 23:50:35
222.186.175.154 attack
Oct 19 15:41:58 ip-172-31-1-72 sshd\[16468\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.175.154  user=root
Oct 19 15:42:00 ip-172-31-1-72 sshd\[16468\]: Failed password for root from 222.186.175.154 port 51590 ssh2
Oct 19 15:42:05 ip-172-31-1-72 sshd\[16468\]: Failed password for root from 222.186.175.154 port 51590 ssh2
Oct 19 15:42:10 ip-172-31-1-72 sshd\[16468\]: Failed password for root from 222.186.175.154 port 51590 ssh2
Oct 19 15:42:15 ip-172-31-1-72 sshd\[16468\]: Failed password for root from 222.186.175.154 port 51590 ssh2
2019-10-19 23:47:36
92.44.161.209 attack
Unauthorized connection attempt from IP address 92.44.161.209 on Port 445(SMB)
2019-10-20 00:23:02
27.100.42.0 attack
Unauthorized connection attempt from IP address 27.100.42.0 on Port 445(SMB)
2019-10-20 00:08:39
117.121.38.113 attack
Oct 19 15:01:49 nextcloud sshd\[15201\]: Invalid user support from 117.121.38.113
Oct 19 15:01:49 nextcloud sshd\[15201\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=117.121.38.113
Oct 19 15:01:50 nextcloud sshd\[15201\]: Failed password for invalid user support from 117.121.38.113 port 44018 ssh2
...
2019-10-19 23:51:11

Recently Reported IPs

104.21.54.51 104.21.54.80 104.21.54.98 13.225.71.36
104.21.55.103 104.21.54.93 104.21.54.87 104.21.55.10
104.21.55.111 101.175.60.224 104.21.55.121 104.21.55.138
104.21.55.159 104.21.55.167 104.21.55.168 104.21.55.158
104.21.55.146 104.21.55.194 104.21.55.198 104.21.55.18