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 <<>> 104.21.8.131
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 49922
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.8.131.			IN	A

;; AUTHORITY SECTION:
.			599	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022021701 1800 900 604800 86400

;; Query time: 83 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 02:59:32 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 131.8.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 131.8.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
163.172.143.1 attack
FiveM Server attack (L7), SYN flood (L4)
2020-09-15 23:05:36
45.160.138.182 attack
Sep 14 18:54:56 mail.srvfarm.net postfix/smtpd[2076883]: warning: unknown[45.160.138.182]: SASL PLAIN authentication failed: 
Sep 14 18:54:57 mail.srvfarm.net postfix/smtpd[2076883]: lost connection after AUTH from unknown[45.160.138.182]
Sep 14 18:56:18 mail.srvfarm.net postfix/smtpd[2076883]: warning: unknown[45.160.138.182]: SASL PLAIN authentication failed: 
Sep 14 18:56:18 mail.srvfarm.net postfix/smtpd[2076883]: lost connection after AUTH from unknown[45.160.138.182]
Sep 14 18:57:07 mail.srvfarm.net postfix/smtps/smtpd[2079600]: warning: unknown[45.160.138.182]: SASL PLAIN authentication failed:
2020-09-15 23:11:47
188.92.213.183 attack
Unauthorized SMTP/IMAP/POP3 connection attempt
2020-09-15 23:01:43
45.118.34.162 attack
Sep 14 18:39:11 mail.srvfarm.net postfix/smtpd[2073584]: warning: unknown[45.118.34.162]: SASL PLAIN authentication failed: 
Sep 14 18:39:12 mail.srvfarm.net postfix/smtpd[2073584]: lost connection after AUTH from unknown[45.118.34.162]
Sep 14 18:43:39 mail.srvfarm.net postfix/smtps/smtpd[2073812]: warning: unknown[45.118.34.162]: SASL PLAIN authentication failed: 
Sep 14 18:43:40 mail.srvfarm.net postfix/smtps/smtpd[2073812]: lost connection after AUTH from unknown[45.118.34.162]
Sep 14 18:48:45 mail.srvfarm.net postfix/smtpd[2075458]: warning: unknown[45.118.34.162]: SASL PLAIN authentication failed:
2020-09-15 23:12:57
208.109.13.208 attackbots
Unauthorized SSH login attempts
2020-09-15 22:51:51
191.53.193.205 attackbots
Brute force attempt
2020-09-15 23:17:54
187.189.51.117 attackbots
Sep 15 16:39:13 host1 sshd[487998]: Invalid user matthias from 187.189.51.117 port 61018
Sep 15 16:39:15 host1 sshd[487998]: Failed password for invalid user matthias from 187.189.51.117 port 61018 ssh2
Sep 15 16:39:13 host1 sshd[487998]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=187.189.51.117 
Sep 15 16:39:13 host1 sshd[487998]: Invalid user matthias from 187.189.51.117 port 61018
Sep 15 16:39:15 host1 sshd[487998]: Failed password for invalid user matthias from 187.189.51.117 port 61018 ssh2
...
2020-09-15 22:54:07
177.44.17.44 attackbots
Sep 15 01:28:33 mail.srvfarm.net postfix/smtpd[2393282]: warning: unknown[177.44.17.44]: SASL PLAIN authentication failed: 
Sep 15 01:28:34 mail.srvfarm.net postfix/smtpd[2393282]: lost connection after AUTH from unknown[177.44.17.44]
Sep 15 01:32:46 mail.srvfarm.net postfix/smtps/smtpd[2397394]: warning: unknown[177.44.17.44]: SASL PLAIN authentication failed: 
Sep 15 01:32:47 mail.srvfarm.net postfix/smtps/smtpd[2397394]: lost connection after AUTH from unknown[177.44.17.44]
Sep 15 01:36:29 mail.srvfarm.net postfix/smtps/smtpd[2396676]: warning: unknown[177.44.17.44]: SASL PLAIN authentication failed:
2020-09-15 23:03:32
103.10.23.8 attack
Port probing on unauthorized port 445
2020-09-15 22:55:43
201.55.179.153 attackspambots
Sep 14 18:21:29 mail.srvfarm.net postfix/smtpd[2073940]: warning: 201-55-179-153.witelecom.com.br[201.55.179.153]: SASL PLAIN authentication failed: 
Sep 14 18:21:30 mail.srvfarm.net postfix/smtpd[2073940]: lost connection after AUTH from 201-55-179-153.witelecom.com.br[201.55.179.153]
Sep 14 18:22:36 mail.srvfarm.net postfix/smtps/smtpd[2073845]: warning: 201-55-179-153.witelecom.com.br[201.55.179.153]: SASL PLAIN authentication failed: 
Sep 14 18:22:36 mail.srvfarm.net postfix/smtps/smtpd[2073845]: lost connection after AUTH from 201-55-179-153.witelecom.com.br[201.55.179.153]
Sep 14 18:28:27 mail.srvfarm.net postfix/smtpd[2073940]: warning: 201-55-179-153.witelecom.com.br[201.55.179.153]: SASL PLAIN authentication failed:
2020-09-15 23:16:52
177.207.251.18 attack
SSH login attempts brute force.
2020-09-15 22:48:06
181.174.144.172 attackspambots
Sep 14 18:38:02 mail.srvfarm.net postfix/smtpd[2073939]: warning: unknown[181.174.144.172]: SASL PLAIN authentication failed: 
Sep 14 18:38:03 mail.srvfarm.net postfix/smtpd[2073939]: lost connection after AUTH from unknown[181.174.144.172]
Sep 14 18:38:21 mail.srvfarm.net postfix/smtpd[2073585]: warning: unknown[181.174.144.172]: SASL PLAIN authentication failed: 
Sep 14 18:38:23 mail.srvfarm.net postfix/smtpd[2073585]: lost connection after AUTH from unknown[181.174.144.172]
Sep 14 18:42:24 mail.srvfarm.net postfix/smtpd[2078261]: warning: unknown[181.174.144.172]: SASL PLAIN authentication failed: 
Sep 14 18:42:24 mail.srvfarm.net postfix/smtpd[2078261]: lost connection after AUTH from unknown[181.174.144.172]
2020-09-15 23:02:25
177.38.5.108 attack
Sep 14 18:52:49 mail.srvfarm.net postfix/smtps/smtpd[2075184]: warning: unknown[177.38.5.108]: SASL PLAIN authentication failed: 
Sep 14 18:52:49 mail.srvfarm.net postfix/smtps/smtpd[2075184]: lost connection after AUTH from unknown[177.38.5.108]
Sep 14 18:54:54 mail.srvfarm.net postfix/smtps/smtpd[2075766]: warning: unknown[177.38.5.108]: SASL PLAIN authentication failed: 
Sep 14 18:54:55 mail.srvfarm.net postfix/smtps/smtpd[2075766]: lost connection after AUTH from unknown[177.38.5.108]
Sep 14 18:55:10 mail.srvfarm.net postfix/smtps/smtpd[2077859]: warning: unknown[177.38.5.108]: SASL PLAIN authentication failed:
2020-09-15 23:03:45
61.216.45.205 attackbots
 TCP (SYN) 61.216.45.205:60747 -> port 81, len 44
2020-09-15 22:45:52
177.130.160.245 attackbots
Sep 14 18:29:40 mail.srvfarm.net postfix/smtpd[2073486]: warning: unknown[177.130.160.245]: SASL PLAIN authentication failed: 
Sep 14 18:29:40 mail.srvfarm.net postfix/smtpd[2073486]: lost connection after AUTH from unknown[177.130.160.245]
Sep 14 18:31:44 mail.srvfarm.net postfix/smtps/smtpd[2075240]: warning: unknown[177.130.160.245]: SASL PLAIN authentication failed: 
Sep 14 18:31:44 mail.srvfarm.net postfix/smtps/smtpd[2075240]: lost connection after AUTH from unknown[177.130.160.245]
Sep 14 18:34:56 mail.srvfarm.net postfix/smtpd[2073941]: warning: unknown[177.130.160.245]: SASL PLAIN authentication failed:
2020-09-15 23:19:10

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