Summary
- Hostname
- —
- ASN
- AS9929
- Organization
- China unicom InnerMongolia province network
- Network
- UNICOM-NM
- Range
- 1.24.0.0 - 1.31.255.255
- /24 block
- 1.28.42.0/24
- Country
- CN
- Blacklists
- 1 of 14
- Abuse contact
- [email protected]
Presence of 1.28.42.0 in blacklists
| List | Status |
|---|---|
| zen.spamhaus.org | 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 1.28.42.0
% [whois.apnic.net]
% Whois data copyright terms http://www.apnic.net/db/dbcopyright.html
% Information related to '1.24.0.0 - 1.31.255.255'
% Abuse contact for '1.24.0.0 - 1.31.255.255' is '[email protected]'
inetnum: 1.24.0.0 - 1.31.255.255
netname: UNICOM-NM
descr: China unicom InnerMongolia province network
descr: China unicom
descr: No.21,Ji-Rong Street,
descr: Beijing 100032
country: CN
admin-c: CH1302-AP
tech-c: HY690-AP
abuse-c: AC1718-AP
status: ALLOCATED PORTABLE
remarks: service provider
mnt-by: APNIC-HM
mnt-lower: MAINT-CNCGROUP-NM
mnt-routes: MAINT-CNCGROUP-RR
mnt-irt: IRT-CU-CN
last-modified: 2023-10-21T03:35:27Z
source: APNIC
irt: IRT-CU-CN
address: No.21,Financial Street
address: Beijing,100033
address: P.R.China
e-mail: [email protected]
abuse-mailbox: [email protected]
admin-c: CH1302-AP
tech-c: CH1302-AP
auth: # Filtered
remarks: [email protected] was validated on 2026-08-19
mnt-by: MAINT-CNCGROUP
last-modified: 2026-08-19T00:57:22Z
source: APNIC
role: ABUSE CUCN
country: ZZ
address: No.21,Financial Street
address: Beijing,100033
address: P.R.China
phone: +000000000
e-mail: [email protected]
admin-c: CH1302-AP
tech-c: CH1302-AP
nic-hdl: AC1718-AP
remarks: Generated from irt object IRT-CU-CN
remarks: [email protected] was validated on 2026-08-19
abuse-mailbox: [email protected]
mnt-by: APNIC-ABUSE
last-modified: 2026-08-20T03:22:23Z
source: APNIC
person: ChinaUnicom Hostmaster
nic-hdl: CH1302-AP
e-mail: [email protected]
address: No.21,Jin-Rong Street
address: Beijing,100033
address: P.R.China
phone: +86-10-66259764
fax-no: +86-10-66259764
country: CN
mnt-by: MAINT-CNCGROUP
last-modified: 2017-08-17T06:13:16Z
source: APNIC
person: honghui yuan
nic-hdl: HY690-AP
e-mail: [email protected]
address: NO.169 hulun south road Huhhot Inner Mongolia, 010028,China
phone: +86-471-6268961
fax-no: +86-471-6291559
country: cn
mnt-by: MAINT-CNCGROUP-NM
last-modified: 2008-09-04T07:42:51Z
source: APNIC
% Information related to '1.28.42.0/24AS9929'
route: 1.28.42.0/24
descr: cuii_neimeng
origin: AS9929
mnt-by: MAINT-CNCGROUP-RR
last-modified: 2022-01-10T08:59:55Z
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 1.28.42.0.
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 1.28.42.0: 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