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: Germany

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 <<>> 53.81.103.54
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 13305
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;53.81.103.54.			IN	A

;; AUTHORITY SECTION:
.			30	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2025020401 1800 900 604800 86400

;; Query time: 39 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Wed Feb 05 02:39:59 CST 2025
;; MSG SIZE  rcvd: 105
Host info
Host 54.103.81.53.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 54.103.81.53.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
47.244.9.129 attack
1,44-11/03 [bc01/m06] PostRequest-Spammer scoring: maputo01_x2b
2019-10-26 00:30:47
51.83.76.36 attackspambots
web-1 [ssh_2] SSH Attack
2019-10-26 00:52:18
117.50.45.254 attackspam
Oct 25 14:03:58 lnxmail61 sshd[29127]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=117.50.45.254
2019-10-26 00:51:16
187.50.59.251 attackbots
Oct 25 13:49:43 tux postfix/smtpd[23558]: warning: hostname 187-50-59-251.customer.tdatabrasil.net.br does not resolve to address 187.50.59.251: Name or service not known
Oct 25 13:49:43 tux postfix/smtpd[23558]: connect from unknown[187.50.59.251]
Oct 25 13:49:48 tux postfix/smtpd[23558]: 01010B0001: client=unknown[187.50.59.251]
Oct x@x
Oct 25 13:49:50 tux postfix/smtpd[23558]: disconnect from unknown[187.50.59.251]


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=187.50.59.251
2019-10-26 00:30:30
218.92.0.208 attackspam
2019-10-25T16:45:46.012887abusebot-7.cloudsearch.cf sshd\[19943\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=218.92.0.208  user=root
2019-10-26 00:45:58
197.234.132.115 attackbotsspam
Automatic report - Banned IP Access
2019-10-26 00:46:45
121.46.29.116 attack
Automatic report - Banned IP Access
2019-10-26 00:41:34
66.243.219.227 attack
Mail/25/465/587-993/995 Probe, Reject, BadAuth, Hack, SPAM -
2019-10-26 00:50:05
91.193.253.113 attackbots
Port 1433 Scan
2019-10-26 00:47:31
45.125.65.48 attackspambots
\[2019-10-25 12:31:20\] SECURITY\[2634\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-10-25T12:31:20.068-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="2085500001148297661002",SessionID="0x7fdf2c3ecfb8",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/45.125.65.48/54994",ACLName="no_extension_match"
\[2019-10-25 12:31:27\] SECURITY\[2634\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-10-25T12:31:27.810-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="360901148778878004",SessionID="0x7fdf2c665838",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/45.125.65.48/62693",ACLName="no_extension_match"
\[2019-10-25 12:32:11\] SECURITY\[2634\] res_security_log.c: SecurityEvent="FailedACL",EventTV="2019-10-25T12:32:11.606-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="2085600001148297661002",SessionID="0x7fdf2c003608",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/45.125.65.48/49520",A
2019-10-26 00:34:03
167.71.108.213 attack
Lines containing failures of 167.71.108.213
Oct 25 13:38:26 hvs sshd[8597]: Invalid user admin from 167.71.108.213 port 46878
Oct 25 13:38:26 hvs sshd[8599]: Invalid user user from 167.71.108.213 port 46880
Oct 25 13:38:26 hvs sshd[8600]: Invalid user e8telnet from 167.71.108.213 port 46894
Oct 25 13:38:26 hvs sshd[8598]: Invalid user admin from 167.71.108.213 port 46876
Oct 25 13:38:27 hvs sshd[8602]: Invalid user e8ehome from 167.71.108.213 port 46892
Oct 25 13:38:27 hvs sshd[8607]: Invalid user admin from 167.71.108.213 port 46918
Oct 25 13:38:27 hvs sshd[8606]: Invalid user default from 167.71.108.213 port 46912
Oct 25 13:38:27 hvs sshd[8609]: Invalid user admin from 167.71.108.213 port 46882
Oct 25 13:38:27 hvs sshd[8610]: Invalid user telnetadmin from 167.71.108.213 port 46904
Oct 25 13:38:27 hvs sshd[8613]: Invalid user support from 167.71.108.213 port 46906
Oct 25 13:38:27 hvs sshd[8611]: Invalid user admin from 167.71.108.213 port 46910
Oct 25 13:38:27 hvs sshd[........
------------------------------
2019-10-26 00:20:55
183.60.143.57 attack
Unauthorised access (Oct 25) SRC=183.60.143.57 LEN=40 TOS=0x10 PREC=0x40 TTL=239 ID=56557 TCP DPT=1433 WINDOW=1024 SYN
2019-10-26 00:11:05
159.203.189.152 attackbots
Oct 25 16:16:02 root sshd[25549]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=159.203.189.152 
Oct 25 16:16:04 root sshd[25549]: Failed password for invalid user rostami from 159.203.189.152 port 45856 ssh2
Oct 25 16:20:02 root sshd[25579]: Failed password for root from 159.203.189.152 port 55244 ssh2
...
2019-10-26 00:54:46
49.88.112.66 attackspam
Oct 25 06:17:37 hanapaa sshd\[19533\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.88.112.66  user=root
Oct 25 06:17:39 hanapaa sshd\[19533\]: Failed password for root from 49.88.112.66 port 24387 ssh2
Oct 25 06:18:26 hanapaa sshd\[19606\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.88.112.66  user=root
Oct 25 06:18:28 hanapaa sshd\[19606\]: Failed password for root from 49.88.112.66 port 50237 ssh2
Oct 25 06:21:56 hanapaa sshd\[19887\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.88.112.66  user=root
2019-10-26 00:35:43
139.162.100.146 attackbotsspam
port scan and connect, tcp 443 (https)
2019-10-26 00:40:48

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