Summary
- Hostname
- —
- ASN
- AS4808
- Organization
- Shanghai Sinocom Telecommunications Co., Ltd.
- Network
- SINOCOM
- Range
- 203.93.2.0 - 203.93.3.255
- /24 block
- 203.93.2.0/24
- Country
- CN
- Blacklists
- 0 of 14
- Abuse contact
- —
Presence of 203.93.2.8 in blacklists
| List | Status |
|---|---|
| zen.spamhaus.org | Not listed |
| bl.spamcop.net | Not listed |
| black.junkemailfilter.com | Not listed |
| multi.surbl.org | Not listed |
| dnsbl.sorbs.net | Not listed |
| b.barracudacentral.org | Not listed |
| dnsbl.tornevall.org | Not listed |
| dnsbl.httpbl.org | Not listed |
| dnsbl-1.uceprotect.net | Not listed |
| dnsbl-2.uceprotect.net | Not listed |
| dnsbl-3.uceprotect.net | Not listed |
| v4.fullbogons.cymru.com | Not listed |
| bl.blocklist.de | Not listed |
| rbl.blockedservers.com | Not listed |
What is a blacklist (RBL)?
An RBL (Real-time Blackhole List), also known as a DNSBL (DNS-based Blackhole List), is a mechanism used to fight spam by blocking e-mails coming from sources known to send spam. RBLs are databases listing the IP addresses deemed responsible for sending unsolicited e-mail. Mail server administrators use these lists to filter incoming e-mails by checking whether the sender's IP address appears in one or more RBLs. If it does, the e-mail may be rejected or subjected to additional checks.
There are different types of RBLs, each with its own criteria for listing IP addresses. Some focus on IP addresses that send spam directly, while others list IP addresses belonging to networks known to host computers infected with malware and used as bots to send spam. RBL operators keep their lists up to date through automatic and manual contributions, and IP address owners can often request removal from a list if they believe the listing is unjustified.
WHOIS data for 203.93.2.8
% [whois.apnic.net]
% Whois data copyright terms http://www.apnic.net/db/dbcopyright.html
% Information related to '203.93.2.0 - 203.93.3.255'
% Abuse contact for '203.93.2.0 - 203.93.3.255' is '[email protected]'
inetnum: 203.93.2.0 - 203.93.3.255
netname: SINOCOM
descr: Shanghai Sinocom Telecommunications Co., Ltd.
descr: Sino Telecom Building
descr: 2601 Songhuajiang Road
descr: Shanghai 200437
country: CN
admin-c: ZZ22-AP
tech-c: HX8-AP
mnt-by: MAINT-CHINAGBN-AP
status: ASSIGNED NON-PORTABLE
remarks: [email protected] 980208
remarks: [email protected] 20040927
last-modified: 2011-11-09T00:09:09Z
source: APNIC
person: Hao Xia
address: Shanghai Sinocom Telecommunications Co., Ltd.
address: Sino Telecom Buiding
address: 2601 Songhuajiang Road
address: Shanghai 200437
country: CN
phone: +86-21-6517 2526
fax-no: +86-21-6517 2245
nic-hdl: HX8-AP
mnt-by: MAINT-CHINAGBN-AP
remarks: [email protected] 980208
last-modified: 2011-12-23T01:52:32Z
source: APNIC
e-mail: [email protected]
person: Zhisheng Zhang
address: Shanghai Sinocom Telecommunications Co., Ltd.
address: Sino Telecom Buiding
address: 2601 Songhuajiang Road
address: Shanghai 200437
country: CN
phone: +86-21-6531 6918
nic-hdl: ZZ22-AP
mnt-by: MAINT-CHINAGBN-AP
remarks: [email protected] 980208
last-modified: 2011-12-23T01:52:32Z
source: APNIC
e-mail: [email protected]
% Information related to '203.93.2.0/23AS4808'
route: 203.93.2.0/23
origin: AS4808
descr: China Unicom
B811&A1218, China Unicom
No.21, Jin-Rong Street
mnt-by: MAINT-CNCGROUP-RR
last-modified: 2023-06-08T07:59:28Z
source: APNIC
% This query was served by the APNIC Whois Service version 1.88.48 (WHOIS-UK2)
Related domain names
Domains mentioned in the reverse DNS and the WHOIS of 203.93.2.8.
What is an IP address?
An IP address is a unique identifier on the internet that identifies a server or an internet user. Here the IP address is 203.93.2.8: it may be the unique address used to reach a website, or the unique address of an internet user.
An SMTP server (a server used to send e-mails) must have a reverse DNS record associated with its IP address