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:
b
Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 104.21.39.4
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 11059
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.39.4.			IN	A

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

;; Query time: 58 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 02:27:45 CST 2022
;; MSG SIZE  rcvd: 104
Host info
Host 4.39.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 4.39.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
185.156.1.99 attack
2019-11-19T08:27:02.130623stark.klein-stark.info sshd\[14695\]: Invalid user backup from 185.156.1.99 port 58460
2019-11-19T08:27:02.135907stark.klein-stark.info sshd\[14695\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=185.156.1.99
2019-11-19T08:27:04.054006stark.klein-stark.info sshd\[14695\]: Failed password for invalid user backup from 185.156.1.99 port 58460 ssh2
...
2019-11-19 16:37:15
61.165.174.31 attackspambots
Brute force SMTP login attempts.
2019-11-19 16:45:21
45.33.16.55 attackspambots
php WP PHPmyadamin ABUSE blocked for 12h
2019-11-19 16:18:23
45.55.47.149 attack
Nov 19 07:48:52 124388 sshd[13533]: Invalid user hank from 45.55.47.149 port 36055
Nov 19 07:48:52 124388 sshd[13533]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=45.55.47.149
Nov 19 07:48:52 124388 sshd[13533]: Invalid user hank from 45.55.47.149 port 36055
Nov 19 07:48:54 124388 sshd[13533]: Failed password for invalid user hank from 45.55.47.149 port 36055 ssh2
Nov 19 07:53:50 124388 sshd[13547]: Invalid user syncg from 45.55.47.149 port 54566
2019-11-19 16:39:22
80.82.65.74 attackbotsspam
Triggered: repeated knocking on closed ports.
2019-11-19 16:40:16
36.81.149.59 attack
Automatic report - Port Scan Attack
2019-11-19 16:49:52
185.209.0.18 attackbots
proto=tcp  .  spt=42010  .  dpt=3389  .  src=185.209.0.18  .  dst=xx.xx.4.1  .     (Listed on    zen-spamhaus plus rbldns-ru)     (298)
2019-11-19 16:43:51
187.210.122.83 attackspambots
187.210.122.83 was recorded 5 times by 1 hosts attempting to connect to the following ports: 161. Incident counter (4h, 24h, all-time): 5, 5, 38
2019-11-19 16:25:22
151.80.254.75 attackspambots
Invalid user turcotte from 151.80.254.75 port 47050
2019-11-19 16:13:45
92.63.194.95 attackspambots
Automatic report - Port Scan
2019-11-19 16:44:32
5.198.130.19 attackbots
php WP PHPmyadamin ABUSE blocked for 12h
2019-11-19 16:18:41
84.201.30.89 attackbots
Nov 19 05:16:11 firewall sshd[3961]: Failed password for invalid user zp from 84.201.30.89 port 43012 ssh2
Nov 19 05:19:41 firewall sshd[4069]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=84.201.30.89  user=root
Nov 19 05:19:43 firewall sshd[4069]: Failed password for root from 84.201.30.89 port 52932 ssh2
...
2019-11-19 16:25:46
45.253.26.34 attackbotsspam
Failed password for root from 45.253.26.34 port 55520 ssh2
Invalid user ip6 from 45.253.26.34 port 34146
pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=45.253.26.34
Failed password for invalid user ip6 from 45.253.26.34 port 34146 ssh2
Invalid user monem from 45.253.26.34 port 41014
2019-11-19 16:14:49
209.17.96.74 attackspam
209.17.96.74 was recorded 14 times by 12 hosts attempting to connect to the following ports: 5907,8081,7547,5908,7443,4786,50070,44818,22,21,2160,5909,8080. Incident counter (4h, 24h, all-time): 14, 35, 564
2019-11-19 16:17:12
63.88.23.204 attackspambots
63.88.23.204 was recorded 16 times by 8 hosts attempting to connect to the following ports: 80. Incident counter (4h, 24h, all-time): 16, 96, 295
2019-11-19 16:46:41

Recently Reported IPs

104.21.39.37 104.21.39.35 104.21.39.47 104.21.39.49
104.21.39.48 104.21.39.51 104.21.69.241 104.21.39.40
104.21.39.57 104.21.39.59 104.21.39.56 104.21.39.68
104.21.39.44 104.21.39.62 104.21.39.71 104.21.39.58
104.21.39.78 104.21.39.72 104.21.69.242 104.21.39.85