Summary
- Hostname
- —
- ASN
- AS202736
- Organization
- NTT Communications Corporation
- Network
- NTT_Communications_Corporation
- Range
- 103.46.207.0 - 103.46.207.255
- /24 block
- 103.46.207.0/24
- Country
- JP
- Blacklists
- 0 of 14
- Abuse contact
- [email protected]
Presence of 103.46.207.0 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 103.46.207.0
% [whois.apnic.net]
% Whois data copyright terms http://www.apnic.net/db/dbcopyright.html
% Information related to '103.46.207.0 - 103.46.207.255'
% Abuse contact for '103.46.207.0 - 103.46.207.255' is '[email protected]'
inetnum: 103.46.207.0 - 103.46.207.255
netname: NTT_Communications_Corporation
descr: NTT Communications Corporation
country: JP
admin-c: EN126-AP
tech-c: EN126-AP
abuse-c: AW972-AP
status: ALLOCATED NON-PORTABLE
remarks: For SPAM/ABUSE Issue:[email protected]
mnt-by: MAINT-JP-DOUBLECAST
mnt-irt: IRT-W-CAST-2-JP
last-modified: 2026-04-07T07:12:01Z
source: APNIC
irt: IRT-W-CAST-2-JP
address: Fuji Shinjuku Building 4th floor
address: Shinjuku 5-11-13 Shinjuku-ku
address: Tokyo 160-0022 Japan
e-mail: [email protected]
abuse-mailbox: [email protected]
admin-c: EN126-AP
tech-c: EN126-AP
auth: # Filtered
remarks: [email protected] was validated on 2026-09-09
mnt-by: MAINT-JP-DOUBLECAST
last-modified: 2026-09-09T02:09:40Z
source: APNIC
role: ABUSE WCAST2JP
country: ZZ
address: Fuji Shinjuku Building 4th floor
address: Shinjuku 5-11-13 Shinjuku-ku
address: Tokyo 160-0022 Japan
phone: +000000000
e-mail: [email protected]
admin-c: EN126-AP
tech-c: EN126-AP
nic-hdl: AW972-AP
remarks: Generated from irt object IRT-W-CAST-2-JP
remarks: [email protected] was validated on 2026-09-09
abuse-mailbox: [email protected]
mnt-by: APNIC-ABUSE
last-modified: 2026-09-09T02:09:51Z
source: APNIC
person: Etsuko Nakagawa
address: Fuji Shinjuku Bldg. 4F, Shinjuku 5-11-13, Tokyo
country: JP
phone: +81-3-3350-7762
fax-no: +81-3-3350-8685
e-mail: [email protected]
nic-hdl: EN126-AP
mnt-by: MAINT-JP-DOUBLECAST
last-modified: 2012-08-02T05:03:52Z
source: APNIC
% Information related to '103.46.207.0/24AS202736'
route: 103.46.207.0/24
origin: AS202736
descr: Double Cast Inc.
Fuji Shinjuku Building 4th floor
Shinjuku 5-11-13
mnt-by: MAINT-JP-DOUBLECAST
last-modified: 2026-04-07T03:30:11Z
source: APNIC
% Information related to '103.46.207.0/24AS216138'
route: 103.46.207.0/24
origin: AS216138
descr: Double Cast Inc.
Fuji Shinjuku Building 4th floor
Shinjuku 5-11-13
mnt-by: MAINT-JP-DOUBLECAST
last-modified: 2026-06-04T07:39:23Z
source: APNIC
% Information related to '103.46.207.0/24AS23532'
route: 103.46.207.0/24
origin: AS23532
descr: Double Cast Inc.
Fuji Shinjuku Building 4th floor
Shinjuku 5-11-13
mnt-by: MAINT-JP-DOUBLECAST
last-modified: 2026-04-07T03:30:18Z
source: APNIC
% Information related to '103.46.207.0/24AS2497'
route: 103.46.207.0/24
origin: AS2497
descr: Double Cast Inc.
Fuji Shinjuku Building 4th floor
Shinjuku 5-11-13
mnt-by: MAINT-JP-DOUBLECAST
last-modified: 2026-09-03T12:45:05Z
source: APNIC
% Information related to '103.46.207.0/24AS2914'
route: 103.46.207.0/24
origin: AS2914
descr: Double Cast Inc.
Fuji Shinjuku Building 4th floor
Shinjuku 5-11-13
mnt-by: MAINT-JP-DOUBLECAST
last-modified: 2026-04-07T07:06:26Z
source: APNIC
% Information related to '103.46.207.0/24AS4637'
route: 103.46.207.0/24
origin: AS4637
descr: Double Cast Inc.
Fuji Shinjuku Building 4th floor
Shinjuku 5-11-13
mnt-by: MAINT-JP-DOUBLECAST
last-modified: 2026-09-01T06:23:07Z
source: APNIC
% Information related to '103.46.207.0/24AS6939'
route: 103.46.207.0/24
origin: AS6939
descr: Double Cast Inc.
Fuji Shinjuku Building 4th floor
Shinjuku 5-11-13
mnt-by: MAINT-JP-DOUBLECAST
last-modified: 2026-09-01T06:17:49Z
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 103.46.207.0.
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 103.46.207.0: 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