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 <<>> 104.21.39.100
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 40028
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.39.100.			IN	A

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

;; Query time: 135 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 02:27:23 CST 2022
;; MSG SIZE  rcvd: 106
Host info
Host 100.39.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 100.39.21.104.in-addr.arpa: NXDOMAIN
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Related comments:
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Jan 22 07:40:34 www_kotimaassa_fi sshd[24374]: Failed password for invalid user ftpadmin from 116.202.12.135 port 41934 ssh2
...
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" "
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222.186.175.212 attackspam
Jan 22 07:39:41 sshgateway sshd\[31421\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.175.212  user=root
Jan 22 07:39:44 sshgateway sshd\[31421\]: Failed password for root from 222.186.175.212 port 7228 ssh2
Jan 22 07:39:57 sshgateway sshd\[31421\]: error: maximum authentication attempts exceeded for root from 222.186.175.212 port 7228 ssh2 \[preauth\]
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92.119.69.220 attackbotsspam
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unauthorized connection attempt
2020-01-22 15:36:55
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01/22/2020-02:15:43.337934 185.176.27.42 Protocol: 6 ET DROP Dshield Block Listed Source group 1
2020-01-22 15:33:54

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