Summary
- Hostname
- —
- ASN
- AS197537
- Organization
- Skyquantum Telecom ltd
- Network
- WISDOM_CLOUD_INTERNET_TECHNOLOGY
- Range
- 43.239.104.0 - 43.239.104.255
- /24 block
- 43.239.104.0/24
- Country
- JP
- Blacklists
- 1 of 14
- Abuse contact
- [email protected]
Presence of 43.239.104.7 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 43.239.104.7
% [whois.apnic.net]
% Whois data copyright terms http://www.apnic.net/db/dbcopyright.html
% Information related to '43.239.104.0 - 43.239.104.255'
% Abuse contact for '43.239.104.0 - 43.239.104.255' is '[email protected]'
inetnum: 43.239.104.0 - 43.239.104.255
netname: WISDOM_CLOUD_INTERNET_TECHNOLOGY
descr: Skyquantum Telecom ltd
country: JP
admin-c: SM1178-AP
tech-c: SM1178-AP
abuse-c: SM1178-AP
status: ALLOCATED NON-PORTABLE
mnt-by: MAINT-GLOBAL-NA-JP
mnt-irt: IRT-GLOBAL-NA-JP
last-modified: 2026-06-04T13:21:16Z
source: APNIC
irt: IRT-GLOBAL-NA-JP
address: Mimoza-Building 3F Minami-Ootsuka2-11-10 Toshima-ku Tokyo Japan 170-0005
e-mail: [email protected]
abuse-mailbox: [email protected]
admin-c: GNAI1-AP
tech-c: GNAI1-AP
auth: # Filtered
remarks: [email protected] was validated on 2026-07-07
mnt-by: MAINT-GLOBAL-NA-JP
last-modified: 2026-07-07T13:23:48Z
source: APNIC
person: Sachie Mochimaru
address: Mimoza-Building 3F Minami-Ootsuka2-11-10, Toshima-ku Tokyo 170-0005
country: JP
phone: +81-3-6682-5901
e-mail: [email protected]
nic-hdl: SM1178-AP
abuse-mailbox: [email protected]
mnt-by: MAINT-GLOBAL-NA-JP
last-modified: 2015-06-15T07:23:19Z
source: APNIC
% Information related to '43.239.104.0/24AS197537'
route: 43.239.104.0/24
origin: AS197537
descr: Global Network Agency Inc.
Mimoza-Building 3F Minami-Ootsuka2-11-10
mnt-by: MAINT-GLOBAL-NA-JP
last-modified: 2026-01-07T07:58:12Z
source: APNIC
% Information related to '43.239.104.0/24AS202736'
route: 43.239.104.0/24
origin: AS202736
descr: Global Network Agency Inc.
Mimoza-Building 3F Minami-Ootsuka2-11-10
mnt-by: MAINT-GLOBAL-NA-JP
last-modified: 2026-01-07T07:58:19Z
source: APNIC
% Information related to '43.239.104.0/24AS216138'
route: 43.239.104.0/24
origin: AS216138
descr: Global Network Agency Inc.
Mimoza-Building 3F Minami-Ootsuka2-11-10
mnt-by: MAINT-GLOBAL-NA-JP
last-modified: 2026-06-04T13:29:02Z
source: APNIC
% Information related to '43.239.104.0/24AS23532'
route: 43.239.104.0/24
origin: AS23532
descr: Global Network Agency Inc.
Mimoza-Building 3F Minami-Ootsuka2-11-10
mnt-by: MAINT-GLOBAL-NA-JP
last-modified: 2026-01-07T07:58:07Z
source: APNIC
% Information related to '43.239.104.0/24AS2497'
route: 43.239.104.0/24
origin: AS2497
descr: Global Network Agency Inc.
Mimoza-Building 3F Minami-Ootsuka2-11-10
mnt-by: MAINT-GLOBAL-NA-JP
last-modified: 2026-09-03T12:57:31Z
source: APNIC
% Information related to '43.239.104.0/24AS4637'
route: 43.239.104.0/24
origin: AS4637
descr: Global Network Agency Inc.
Mimoza-Building 3F Minami-Ootsuka2-11-10
mnt-by: MAINT-GLOBAL-NA-JP
last-modified: 2026-09-01T05:37:58Z
source: APNIC
% Information related to '43.239.104.0/24AS6939'
route: 43.239.104.0/24
origin: AS6939
descr: Global Network Agency Inc.
Mimoza-Building 3F Minami-Ootsuka2-11-10
mnt-by: MAINT-GLOBAL-NA-JP
last-modified: 2026-09-01T05:25:44Z
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 43.239.104.7.
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 43.239.104.7: 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