Summary
- Hostname
- —
- ASN
- AS24420
- Organization
- Chinese Academy of Forestry
- Network
- CAFNET
- Range
- 203.83.56.0 - 203.83.63.255
- /24 block
- 203.83.63.0/24
- Country
- CN
- Blacklists
- 0 of 14
- Abuse contact
- [email protected]
Presence of 203.83.63.255 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 203.83.63.255
% [whois.apnic.net]
% Whois data copyright terms http://www.apnic.net/db/dbcopyright.html
% Information related to '203.83.56.0 - 203.83.63.255'
% Abuse contact for '203.83.56.0 - 203.83.63.255' is '[email protected]'
inetnum: 203.83.56.0 - 203.83.63.255
netname: CAFNET
descr: Chinese Academy of Forestry
descr: Box 33, 1 Dongxiaofu, Xianghongqi, Haidian District,
descr: Beijing, China 100091
country: CN
admin-c: ZX545-AP
tech-c: FD47-AP
abuse-c: AC1601-AP
status: ALLOCATED PORTABLE
mnt-by: MAINT-CNNIC-AP
mnt-irt: IRT-CAFNET-CN
mnt-lower: MAINT-CNNIC-AP
mnt-routes: MAINT-CN-CSTNET
last-modified: 2023-11-28T00:57:21Z
source: APNIC
irt: IRT-CAFNET-CN
address: Box 33, 1 Dongxiaofu, Xianghongqi, Haidian District, Beijing,China
e-mail: [email protected]
abuse-mailbox: [email protected]
admin-c: ZX545-AP
tech-c: FD47-AP
auth: # Filtered
mnt-by: MAINT-CNNIC-AP
last-modified: 2025-11-18T00:34:56Z
source: APNIC
role: ABUSE CNNICCN
country: ZZ
address: Beijing, China
phone: +000000000
e-mail: [email protected]
admin-c: IP50-AP
tech-c: IP50-AP
nic-hdl: AC1601-AP
remarks: Generated from irt object IRT-CNNIC-CN
remarks: [email protected] is invalid
abuse-mailbox: [email protected]
mnt-by: APNIC-ABUSE
last-modified: 2025-09-19T17:20:32Z
source: APNIC
person: Fan Dongpu
nic-hdl: FD47-AP
e-mail: [email protected]
address: Box 33, 1 Dongxiaofu, Xianghongqi, Haidian District, Beijing,China
phone: +86-10-62889181
fax-no: +86-10-62872778
country: CN
mnt-by: MAINT-NEW
last-modified: 2008-09-04T07:29:24Z
source: APNIC
person: Zhang Xu
nic-hdl: ZX545-AP
e-mail: [email protected]
address: Box 33, 1 Dongxiaofu, Xianghongqi, Haidian District, Beijing,China
phone: +86-10-62872779
fax-no: +86-10-62872778
country: CN
mnt-by: MAINT-NEW
last-modified: 2008-09-04T07:29:24Z
source: APNIC
% Information related to '203.83.56.0/21AS24420'
route: 203.83.56.0/21
descr: Route originated from CSTNET's customers
country: CN
origin: AS24420
remarks: Please contact [email protected] if you have any
remarks: questions regarding this object.
remarks: Antispam mail please send to [email protected].
notify: [email protected]
mnt-by: MAINT-CN-CSTNET
last-modified: 2009-05-21T12:59:26Z
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 203.83.63.255.
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 203.83.63.255: 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