Summary
- Hostname
- —
- ASN
- AS9656
- Organization
- T-Systems Singapore Pte Ltd
- Network
- T-SYSTEMS-DC-SERVICES
- Range
- 202.136.0.0 - 202.136.15.255
- /24 block
- 202.136.3.0/24
- Country
- SG
- Blacklists
- 0 of 14
- Abuse contact
- [email protected]
Presence of 202.136.3.255 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 202.136.3.255
% [whois.apnic.net]
% Whois data copyright terms http://www.apnic.net/db/dbcopyright.html
% Information related to '202.136.0.0 - 202.136.15.255'
% Abuse contact for '202.136.0.0 - 202.136.15.255' is '[email protected]'
inetnum: 202.136.0.0 - 202.136.15.255
netname: T-SYSTEMS-DC-SERVICES
descr: T-SYSTEMS SINGAPORE PTY LTD
descr: INTERNET SERVICE PROVIDER
descr: INTERNET DATA CENTRE
descr: MANAGED SERVICE PROVIDER
country: SG
org: ORG-TSPL7-AP
admin-c: CM2520-AP
tech-c: DKS37-AP
abuse-c: AT1257-AP
status: ALLOCATED PORTABLE
mnt-by: APNIC-HM
mnt-lower: MAINT-T-SYSTEMS
mnt-routes: MAINT-T-SYSTEMS
mnt-irt: IRT-T-SYSTEMS-SG
last-modified: 2020-10-20T00:56:37Z
source: APNIC
irt: IRT-T-SYSTEMS-SG
address: No 23 Tai Seng Drive
address:
address: Singapore 535224
e-mail: [email protected]
abuse-mailbox: [email protected]
admin-c: CM2520-AP
tech-c: DKS37-AP
auth: # Filtered
remarks: [email protected] is invalid
mnt-by: MAINT-T-SYSTEMS
last-modified: 2026-07-29T13:12:37Z
source: APNIC
organisation: ORG-TSPL7-AP
org-name: T-Systems Singapore Pte Ltd
org-type: LIR
country: SG
address: 15 Changi Business Park Crescent
address: # 06-01, Haite Building
phone: +65-6-510-6109
fax-no: +65-6-510-6299
e-mail: [email protected]
mnt-ref: APNIC-HM
mnt-by: APNIC-HM
last-modified: 2023-09-05T02:14:46Z
source: APNIC
role: ABUSE TSYSTEMSSG
country: ZZ
address: No 23 Tai Seng Drive
address:
address: Singapore 535224
phone: +000000000
e-mail: [email protected]
admin-c: CM2520-AP
tech-c: DKS37-AP
nic-hdl: AT1257-AP
remarks: Generated from irt object IRT-T-SYSTEMS-SG
remarks: [email protected] is invalid
abuse-mailbox: [email protected]
mnt-by: APNIC-ABUSE
last-modified: 2026-07-29T13:14:14Z
source: APNIC
person: Conie Mercader
address: 23 Tai Seng Drive
address: #03-01 Deutsche Telekom Centre
address: Singapore 535224
country: SG
phone: +65-6510-6109
e-mail: [email protected]
nic-hdl: CM2520-AP
mnt-by: MAINT-T-SYSTEMS
fax-no: +65-6510-6121
last-modified: 2018-07-13T03:28:29Z
source: APNIC
person: Dinesh Kumar Sundararajan
address: 23 Tai Seng Drive
address: #03-01 Deutsche Telekom Centre
address: Singapore 535224
country: SG
phone: +65-6510-4172
e-mail: [email protected]
nic-hdl: DKS37-AP
mnt-by: MAINT-T-SYSTEMS
fax-no: +65-6510-6121
last-modified: 2018-07-13T03:27:01Z
source: APNIC
% Information related to '202.136.0.0/22AS9656'
route: 202.136.0.0/22
descr: T-Systems Singapore
country: SG
origin: AS9656
mnt-by: MAINT-T-SYSTEMS
last-modified: 2008-09-04T07:54:33Z
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 202.136.3.255.
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 202.136.3.255: 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