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 <<>> 104.21.55.21
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 49754
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.55.21.			IN	A

;; AUTHORITY SECTION:
.			158	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022022001 1800 900 604800 86400

;; Query time: 63 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Mon Feb 21 05:24:23 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 21.55.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 21.55.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
207.243.62.162 attackspam
$f2bV_matches
2019-10-02 17:08:42
59.19.147.198 attack
Oct  2 09:17:00 jane sshd[24494]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=59.19.147.198 
Oct  2 09:17:03 jane sshd[24494]: Failed password for invalid user test from 59.19.147.198 port 39690 ssh2
...
2019-10-02 16:48:46
153.254.115.57 attackspam
Oct  2 10:35:48 saschabauer sshd[31170]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=153.254.115.57
Oct  2 10:35:50 saschabauer sshd[31170]: Failed password for invalid user course from 153.254.115.57 port 16464 ssh2
2019-10-02 16:59:05
180.97.31.28 attackbotsspam
Oct  1 20:56:32 php1 sshd\[7893\]: Invalid user zimeip from 180.97.31.28
Oct  1 20:56:32 php1 sshd\[7893\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=180.97.31.28
Oct  1 20:56:34 php1 sshd\[7893\]: Failed password for invalid user zimeip from 180.97.31.28 port 43661 ssh2
Oct  1 21:01:39 php1 sshd\[8478\]: Invalid user eliott from 180.97.31.28
Oct  1 21:01:39 php1 sshd\[8478\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=180.97.31.28
2019-10-02 17:15:52
183.60.254.154 attack
1569988145 - 10/02/2019 05:49:05 Host: 183.60.254.154/183.60.254.154 Port: 500 UDP Blocked
2019-10-02 16:47:25
5.27.23.4 attack
IP Ban Report : https://help-dysk.pl/wordpress-firewall-plugins/ip/5.27.23.4/ 
 TR - 1H : (233)  
 Protection Against DDoS WordPress plugin :  
 "odzyskiwanie danych help-dysk" 
 IP Address Ranges by Country : TR 
 NAME ASN : ASN16135 
 
 IP : 5.27.23.4 
 
 CIDR : 5.27.0.0/19 
 
 PREFIX COUNT : 147 
 
 UNIQUE IP COUNT : 1246464 
 
 
 WYKRYTE ATAKI Z ASN16135 :  
  1H - 1 
  3H - 3 
  6H - 6 
 12H - 11 
 24H - 29 
 
 DateTime : 2019-10-02 05:49:24 
 
 INFO : Port MAX SCAN Scan Detected and Blocked by ADMIN  - data recovery
2019-10-02 16:36:29
177.33.42.131 attackbots
Automatic report - Port Scan Attack
2019-10-02 17:06:20
118.241.95.217 attack
IP Ban Report : https://help-dysk.pl/wordpress-firewall-plugins/ip/118.241.95.217/ 
 JP - 1H : (195)  
 Protection Against DDoS WordPress plugin :  
 "odzyskiwanie danych help-dysk" 
 IP Address Ranges by Country : JP 
 NAME ASN : ASN2527 
 
 IP : 118.241.95.217 
 
 CIDR : 118.240.0.0/15 
 
 PREFIX COUNT : 53 
 
 UNIQUE IP COUNT : 3406848 
 
 
 WYKRYTE ATAKI Z ASN2527 :  
  1H - 2 
  3H - 3 
  6H - 3 
 12H - 10 
 24H - 22 
 
 DateTime : 2019-10-02 05:48:15 
 
 INFO : Port MAX SCAN Scan Detected and Blocked by ADMIN  - data recovery
2019-10-02 17:18:07
115.238.236.74 attackspam
Oct  1 22:35:24 hpm sshd\[1433\]: Invalid user jobsubmit123 from 115.238.236.74
Oct  1 22:35:24 hpm sshd\[1433\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=115.238.236.74
Oct  1 22:35:26 hpm sshd\[1433\]: Failed password for invalid user jobsubmit123 from 115.238.236.74 port 4093 ssh2
Oct  1 22:40:24 hpm sshd\[2012\]: Invalid user Guest from 115.238.236.74
Oct  1 22:40:24 hpm sshd\[2012\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=115.238.236.74
2019-10-02 17:07:56
176.27.8.105 attackspam
Automatic report - Port Scan Attack
2019-10-02 16:51:38
151.20.156.97 attackbots
Automatic report - Port Scan Attack
2019-10-02 16:55:32
80.211.95.201 attack
Oct  2 07:04:20 tuotantolaitos sshd[4821]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=80.211.95.201
Oct  2 07:04:23 tuotantolaitos sshd[4821]: Failed password for invalid user hadoop from 80.211.95.201 port 42460 ssh2
...
2019-10-02 17:08:59
195.154.223.226 attackspambots
Oct  2 07:14:53 www5 sshd\[18708\]: Invalid user temp from 195.154.223.226
Oct  2 07:14:53 www5 sshd\[18708\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=195.154.223.226
Oct  2 07:14:55 www5 sshd\[18708\]: Failed password for invalid user temp from 195.154.223.226 port 42852 ssh2
...
2019-10-02 16:43:10
222.186.173.154 attack
Triggered by Fail2Ban at Ares web server
2019-10-02 16:49:08
49.255.179.216 attackspam
Oct  2 01:37:18 xtremcommunity sshd\[91134\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.255.179.216  user=root
Oct  2 01:37:20 xtremcommunity sshd\[91134\]: Failed password for root from 49.255.179.216 port 48844 ssh2
Oct  2 01:42:29 xtremcommunity sshd\[91243\]: Invalid user openldap from 49.255.179.216 port 33006
Oct  2 01:42:29 xtremcommunity sshd\[91243\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.255.179.216
Oct  2 01:42:30 xtremcommunity sshd\[91243\]: Failed password for invalid user openldap from 49.255.179.216 port 33006 ssh2
...
2019-10-02 16:50:42

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