Summary
- Hostname
- —
- ASN
- —
- Organization
- The University of Hong Kong
- Network
- HKU-HK
- Range
- 175.159.158.0 - 175.159.191.255
- /24 block
- 175.159.159.0/24
- Country
- HK
- Blacklists
- 0 of 14
- Abuse contact
- [email protected]
Presence of 175.159.159.225 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 175.159.159.225
% [whois.apnic.net]
% Whois data copyright terms http://www.apnic.net/db/dbcopyright.html
% Information related to '175.159.158.0 - 175.159.191.255'
% Abuse contact for '175.159.158.0 - 175.159.191.255' is '[email protected]'
inetnum: 175.159.158.0 - 175.159.191.255
netname: HKU-HK
descr: The University of Hong Kong
descr: Pokfulam
country: HK
admin-c: DITS-HKU-AP
tech-c: NTC5-AP
abuse-c: AJ481-AP
status: ASSIGNED NON-PORTABLE
remarks: -+-+-+-+-+-+-+-+-+-+-+-++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
remarks: Please send abuse reports to [email protected]
remarks: -+-+-+-+-+-+-+-+-+-+-+-++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
mnt-by: MAINT-JUCC-AP
mnt-lower: MAINT-HK-HKU
mnt-irt: IRT-JUCC-HK
last-modified: 2021-05-12T03:11:50Z
source: APNIC
irt: IRT-JUCC-HK
address: Joint Universities Computer Centre
address: c/o Information Technology Services
address: The University of Hong Kong
address: Pokfulam Road
e-mail: [email protected]
abuse-mailbox: [email protected]
admin-c: GM806-AP
tech-c: DC1224-AP
tech-c: HTS5-AP
auth: # Filtered
remarks: [email protected] was validated on 2026-07-02
mnt-by: MAINT-JUCC-AP
last-modified: 2026-07-02T01:34:54Z
source: APNIC
role: ABUSE JUCCHK
country: ZZ
address: Joint Universities Computer Centre
address: c/o Information Technology Services
address: The University of Hong Kong
address: Pokfulam Road
phone: +000000000
e-mail: [email protected]
admin-c: GM806-AP
tech-c: DC1224-AP
tech-c: HTS5-AP
nic-hdl: AJ481-AP
remarks: Generated from irt object IRT-JUCC-HK
remarks: [email protected] was validated on 2026-07-02
abuse-mailbox: [email protected]
mnt-by: APNIC-ABUSE
last-modified: 2026-07-02T01:35:12Z
source: APNIC
role: HKU Director of ITS
address: The University of Hong Kong
address: Pokfulam Road, Hong Kong
country: HK
phone: +852 3549 5333
e-mail: [email protected]
admin-c: DITS-HKU-AP
tech-c: NTC5-AP
nic-hdl: DITS-HKU-AP
mnt-by: MAINT-JUCC-AP
last-modified: 2011-07-19T10:44:46Z
source: APNIC
role: Network Technical Contact
address: ITS Office, 1/F, Library Building (Old Wing)
The University of Hong Kong,
Pokfulam Road,
Hong Kong
country: HK
phone: +852-3917-2496
e-mail: [email protected]
admin-c: DITS-HKU-AP
tech-c: NTC5-AP
nic-hdl: NTC5-AP
mnt-by: MAINT-HK-HKU
last-modified: 2020-05-25T06:43:54Z
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 175.159.159.225.
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 175.159.159.225: 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