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: Czech Republic

Internet Service Provider: UPC Broadband Internet Services

Hostname: unknown

Organization: unknown

Usage Type: Fixed Line ISP

Comments:
Type Details Datetime
attack
Aug 13 14:48:51 XXX sshd[53723]: Invalid user testadmin from 78.45.28.177 port 49698
2019-08-13 21:24:29
attackspambots
Aug  8 05:27:32 MK-Soft-Root1 sshd\[26732\]: Invalid user kwan from 78.45.28.177 port 36190
Aug  8 05:27:32 MK-Soft-Root1 sshd\[26732\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=78.45.28.177
Aug  8 05:27:34 MK-Soft-Root1 sshd\[26732\]: Failed password for invalid user kwan from 78.45.28.177 port 36190 ssh2
...
2019-08-08 11:51:16
attackspambots
Aug  6 15:40:55 ArkNodeAT sshd\[9126\]: Invalid user pink from 78.45.28.177
Aug  6 15:40:55 ArkNodeAT sshd\[9126\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=78.45.28.177
Aug  6 15:40:57 ArkNodeAT sshd\[9126\]: Failed password for invalid user pink from 78.45.28.177 port 53320 ssh2
2019-08-06 22:26:02
attack
Aug  1 19:34:33 MK-Soft-VM7 sshd\[1700\]: Invalid user pass123 from 78.45.28.177 port 52044
Aug  1 19:34:33 MK-Soft-VM7 sshd\[1700\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=78.45.28.177
Aug  1 19:34:34 MK-Soft-VM7 sshd\[1700\]: Failed password for invalid user pass123 from 78.45.28.177 port 52044 ssh2
...
2019-08-02 04:35:13
Comments on same subnet:
No discussion about this subnet yet..
Whois info:
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Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 78.45.28.177
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 45971
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

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

;; AUTHORITY SECTION:
.			1054	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2019080101 1800 900 604800 86400

;; Query time: 1 msec
;; SERVER: 67.207.67.2#53(67.207.67.2)
;; WHEN: Fri Aug 02 04:35:08 CST 2019
;; MSG SIZE  rcvd: 116
Host info
177.28.45.78.in-addr.arpa domain name pointer ip-78-45-28-177.net.upcbroadband.cz.
Nslookup info:
Server:		67.207.67.2
Address:	67.207.67.2#53

Non-authoritative answer:
177.28.45.78.in-addr.arpa	name = ip-78-45-28-177.net.upcbroadband.cz.

Authoritative answers can be found from:
Related IP info:
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Dec 19 10:12:36 MK-Soft-VM8 sshd[26965]: Failed password for root from 49.88.112.61 port 36384 ssh2
...
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