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: Charlottesville

Region: Virginia

Country: United States

Internet Service Provider: Atlantic.net Inc.

Hostname: unknown

Organization: unknown

Usage Type: Data Center/Web Hosting/Transit

Comments:
Type Details Datetime
attack
Nov 11 17:40:55 XXX sshd[64287]: Invalid user ftpuser from 104.245.39.37 port 56800
2019-11-12 03:18:27
Comments on same subnet:
No discussion about this subnet yet..
Whois info:
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Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 104.245.39.37
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 44365
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;104.245.39.37.			IN	A

;; AUTHORITY SECTION:
.			554	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2019111101 1800 900 604800 86400

;; Query time: 98 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Tue Nov 12 03:18:24 CST 2019
;; MSG SIZE  rcvd: 117
Host info
Host 37.39.245.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 37.39.245.104.in-addr.arpa: NXDOMAIN
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2019-12-18 21:25:20,840 fail2ban.actions        \[2017\]: NOTICE  \[Postifx_Ban\] Ban 78.128.113.170
2019-12-18 23:09:21,182 fail2ban.actions        \[2017\]: NOTICE  \[Postifx_Ban\] Ban 78.128.113.170
2019-12-19 02:51:30,290 fail2ban.actions        \[2017\]: NOTICE  \[Postifx_Ban\] Ban 78.128.113.170
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2019-12-19 09:07:08,755 fail2ban.actions        \[2017\]: NOTICE  \[Postifx_Ban\] Ban 78.128.113.170
...
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