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: Russian Federation (the)

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 <<>> 81.13.57.21
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 24554
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;81.13.57.21.			IN	A

;; AUTHORITY SECTION:
.			30	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2025012102 1800 900 604800 86400

;; Query time: 37 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Wed Jan 22 10:49:37 CST 2025
;; MSG SIZE  rcvd: 104
Host info
Host 21.57.13.81.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 21.57.13.81.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
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2020-06-24 02:05:25
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Unauthorized connection attempt detected from IP address 201.43.135.154 to port 445 [T]
2020-06-24 02:18:43
211.118.42.219 attack
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2020-06-24 02:18:12
193.56.28.158 attackbotsspam
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2020-06-24 02:00:40
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2020-06-24 02:13:44
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2020-06-24 02:37:29
202.57.58.188 attackspam
Unauthorized connection attempt detected from IP address 202.57.58.188 to port 3389 [T]
2020-06-24 02:36:03
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2020-06-24 02:09:27
118.238.48.91 attackbotsspam
Unauthorized connection attempt detected from IP address 118.238.48.91 to port 23 [T]
2020-06-24 02:05:53
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Unauthorized connection attempt detected from IP address 45.226.79.16 to port 445 [T]
2020-06-24 02:30:53
178.74.102.1 attack
Unauthorized connection attempt detected from IP address 178.74.102.1 to port 445 [T]
2020-06-24 02:39:44
167.71.248.102 attack
 TCP (SYN) 167.71.248.102:55297 -> port 1484, len 44
2020-06-24 02:23:14
158.69.138.27 attackbots
Unauthorized connection attempt detected from IP address 158.69.138.27 to port 8888
2020-06-24 02:24:04

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