必须是合法有效的IP地址, 可以是IPv4或者是IPv6, 例如127.0.0.1或者2001:DB8:0:0:8:800:200C:417A
基本信息:

城市(city): unknown

省份(region): unknown

国家(country): Brazil

运营商(isp): Rede Brasileira de Comunicacao Ltda

主机名(hostname): unknown

机构(organization): unknown

使用类型(Usage Type): Fixed Line ISP

用户上报:
类型 评论内容 时间
attackspambots
Aug 23 17:35:48 pl1server postfix/smtpd[29723]: warning: hostname 191-53-52-66.vze-wr.mastercabo.com.br does not resolve to address 191.53.52.66: Name or service not known
Aug 23 17:35:48 pl1server postfix/smtpd[29723]: connect from unknown[191.53.52.66]
Aug 23 17:35:53 pl1server postfix/smtpd[29723]: warning: unknown[191.53.52.66]: SASL CRAM-MD5 authentication failed: authentication failure
Aug 23 17:35:53 pl1server postfix/smtpd[29723]: warning: unknown[191.53.52.66]: SASL PLAIN authentication failed: authentication failure
Aug 23 17:35:55 pl1server postfix/smtpd[29723]: warning: unknown[191.53.52.66]: SASL LOGIN authentication failed: authentication failure


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=191.53.52.66
2019-08-24 08:14:36
相同子网IP讨论:
IP 类型 评论内容 时间
191.53.52.220 attackspam
Attempted Brute Force (dovecot)
2020-10-14 03:05:10
191.53.52.220 attack
Attempted Brute Force (dovecot)
2020-10-13 18:21:29
191.53.52.96 attack
Sep 18 06:57:23 mail.srvfarm.net postfix/smtpd[591119]: warning: unknown[191.53.52.96]: SASL PLAIN authentication failed: 
Sep 18 06:57:24 mail.srvfarm.net postfix/smtpd[591119]: lost connection after AUTH from unknown[191.53.52.96]
Sep 18 06:58:54 mail.srvfarm.net postfix/smtpd[591128]: warning: unknown[191.53.52.96]: SASL PLAIN authentication failed: 
Sep 18 06:58:54 mail.srvfarm.net postfix/smtpd[591128]: lost connection after AUTH from unknown[191.53.52.96]
Sep 18 07:03:22 mail.srvfarm.net postfix/smtpd[608630]: warning: unknown[191.53.52.96]: SASL PLAIN authentication failed:
2020-09-19 01:58:38
191.53.52.96 attackbots
(smtpauth) Failed SMTP AUTH login from 191.53.52.96 (BR/Brazil/191-53-52-96.vze-wr.mastercabo.com.br): 1 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_TRIGGER; Logs: 2020-09-18 11:49:55 plain authenticator failed for ([191.53.52.96]) [191.53.52.96]: 535 Incorrect authentication data (set_id=info)
2020-09-18 17:55:59
191.53.52.20 attack
Sep 13 03:26:00 mail.srvfarm.net postfix/smtpd[891607]: warning: unknown[191.53.52.20]: SASL PLAIN authentication failed: 
Sep 13 03:26:01 mail.srvfarm.net postfix/smtpd[891607]: lost connection after AUTH from unknown[191.53.52.20]
Sep 13 03:26:26 mail.srvfarm.net postfix/smtps/smtpd[893602]: warning: unknown[191.53.52.20]: SASL PLAIN authentication failed: 
Sep 13 03:26:26 mail.srvfarm.net postfix/smtps/smtpd[893602]: lost connection after AUTH from unknown[191.53.52.20]
Sep 13 03:30:20 mail.srvfarm.net postfix/smtpd[891609]: warning: unknown[191.53.52.20]: SASL PLAIN authentication failed:
2020-09-14 01:34:49
191.53.52.20 attackbots
Sep 13 03:26:00 mail.srvfarm.net postfix/smtpd[891607]: warning: unknown[191.53.52.20]: SASL PLAIN authentication failed: 
Sep 13 03:26:01 mail.srvfarm.net postfix/smtpd[891607]: lost connection after AUTH from unknown[191.53.52.20]
Sep 13 03:26:26 mail.srvfarm.net postfix/smtps/smtpd[893602]: warning: unknown[191.53.52.20]: SASL PLAIN authentication failed: 
Sep 13 03:26:26 mail.srvfarm.net postfix/smtps/smtpd[893602]: lost connection after AUTH from unknown[191.53.52.20]
Sep 13 03:30:20 mail.srvfarm.net postfix/smtpd[891609]: warning: unknown[191.53.52.20]: SASL PLAIN authentication failed:
2020-09-13 17:28:34
191.53.52.137 attackbotsspam
Sep 11 18:35:28 mail.srvfarm.net postfix/smtps/smtpd[3892332]: warning: unknown[191.53.52.137]: SASL PLAIN authentication failed: 
Sep 11 18:35:29 mail.srvfarm.net postfix/smtps/smtpd[3892332]: lost connection after AUTH from unknown[191.53.52.137]
Sep 11 18:39:48 mail.srvfarm.net postfix/smtpd[3894593]: warning: unknown[191.53.52.137]: SASL PLAIN authentication failed: 
Sep 11 18:39:49 mail.srvfarm.net postfix/smtpd[3894593]: lost connection after AUTH from unknown[191.53.52.137]
Sep 11 18:44:03 mail.srvfarm.net postfix/smtpd[3893261]: warning: unknown[191.53.52.137]: SASL PLAIN authentication failed:
2020-09-13 01:33:22
191.53.52.137 attackspambots
Sep 11 18:35:28 mail.srvfarm.net postfix/smtps/smtpd[3892332]: warning: unknown[191.53.52.137]: SASL PLAIN authentication failed: 
Sep 11 18:35:29 mail.srvfarm.net postfix/smtps/smtpd[3892332]: lost connection after AUTH from unknown[191.53.52.137]
Sep 11 18:39:48 mail.srvfarm.net postfix/smtpd[3894593]: warning: unknown[191.53.52.137]: SASL PLAIN authentication failed: 
Sep 11 18:39:49 mail.srvfarm.net postfix/smtpd[3894593]: lost connection after AUTH from unknown[191.53.52.137]
Sep 11 18:44:03 mail.srvfarm.net postfix/smtpd[3893261]: warning: unknown[191.53.52.137]: SASL PLAIN authentication failed:
2020-09-12 17:32:34
191.53.52.57 attack
Brute force attempt
2020-09-06 22:50:55
191.53.52.57 attackbotsspam
Brute force attempt
2020-09-06 14:21:57
191.53.52.57 attackbotsspam
Brute force attempt
2020-09-06 06:32:03
191.53.52.206 attack
$f2bV_matches
2020-08-19 23:27:23
191.53.52.119 attackbotsspam
Email SMTP authentication failure
2020-08-14 17:48:13
191.53.52.126 attackspambots
mail brute force
2020-08-14 13:24:29
191.53.52.96 attackbotsspam
Unauthorized connection attempt
IP: 191.53.52.96
Ports affected
    Message Submission (587) 
Abuse Confidence rating 41%
Found in DNSBL('s)
ASN Details
   AS28202 Rede Brasileira de Comunicacao Ltda
   Brazil (BR)
   CIDR 191.53.0.0/16
Log Date: 10/08/2020 8:14:14 PM UTC
2020-08-11 06:31:26
WHOIS信息:
b
DIG信息:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 191.53.52.66
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 31704
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

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

;; AUTHORITY SECTION:
.			3600	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2019082302 1800 900 604800 86400

;; Query time: 2 msec
;; SERVER: 67.207.67.2#53(67.207.67.2)
;; WHEN: Sat Aug 24 08:14:31 CST 2019
;; MSG SIZE  rcvd: 116
HOST信息:
66.52.53.191.in-addr.arpa domain name pointer 191-53-52-66.vze-wr.mastercabo.com.br.
NSLOOKUP信息:
Server:		67.207.67.2
Address:	67.207.67.2#53

Non-authoritative answer:
66.52.53.191.in-addr.arpa	name = 191-53-52-66.vze-wr.mastercabo.com.br.

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