ASN AS37989 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS37989?

AS37989 is listed under DCS1 Pte. Ltd..

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS37989 DCS1 Pte. Ltd. | IPGeolocation.io

ASN Lookup Tool

DCS1 Pte. Ltd. dcs1.biz

SG 3 Routes

AS Data

AS37989

AS37989 – DCS1 Pte. Ltd.

AS Number	37989
AS Name	DCS1PTELTD-AS-AP
Organization	DCS1 Pte. Ltd. (org-dpl42-ap)
Country	SG
Website	dcs1.biz
Number of IPv4 Routes	2
Number of IPv6 Routes	1
ASN type	BUSINESS
Registry	APNIC
Date Allocated	N/A

ASN Intelligence API for production workflows

Use ASN data for AS37989 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
203.123.48.0/22	AS37989	DCS1 Pte. Ltd.	Main Network for DCS	1024
44.32.99.0/24	AS37989	DCS1 Pte. Ltd.	Amateur Radio Digital Communications	256
2405:fc00::/32	AS37989	DCS1 Pte. Ltd.	DCS1 SG DC	~79×10²⁷

Raw Whois Response

% [whois.apnic.net]
% Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html

% Information related to 'AS37888 - AS38911'

as-block:       AS37888 - AS38911
descr:          APNIC ASN block
remarks:        These AS numbers are further assigned by APNIC
remarks:        to APNIC members and end-users in the APNIC region
admin-c:        HM20-AP
tech-c:         HM20-AP
mnt-by:         APNIC-HM
mnt-lower:      APNIC-HM
last-modified:  2009-09-29T06:04:16Z
source:         APNIC

role:           APNIC Hostmaster
address:        6 Cordelia Street
address:        South Brisbane
address:        QLD 4101
country:        AU
phone:          +61 7 3858 3100
fax-no:         +61 7 3858 3199
e-mail:         helpdesk@apnic.net
admin-c:        AMS11-AP
tech-c:         AH256-AP
nic-hdl:        HM20-AP
remarks:        Administrator for APNIC
notify:         hostmaster@apnic.net
mnt-by:         MAINT-APNIC-AP
last-modified:  2013-10-23T04:06:51Z
source:         APNIC

% Information related to 'AS37971 - AS38085'

as-block:       AS37971 - AS38085
descr:          APNIC ASN block
remarks:        These AS numbers are further assigned by APNIC
remarks:        to APNIC members and end-users in the APNIC region
admin-c:        HM20-AP
tech-c:         HM20-AP
mnt-by:         APNIC-HM
mnt-lower:      APNIC-HM
last-modified:  2008-09-04T06:40:26Z
source:         APNIC

role:           APNIC Hostmaster
address:        6 Cordelia Street
address:        South Brisbane
address:        QLD 4101
country:        AU
phone:          +61 7 3858 3100
fax-no:         +61 7 3858 3199
e-mail:         helpdesk@apnic.net
admin-c:        AMS11-AP
tech-c:         AH256-AP
nic-hdl:        HM20-AP
remarks:        Administrator for APNIC
notify:         hostmaster@apnic.net
mnt-by:         MAINT-APNIC-AP
last-modified:  2013-10-23T04:06:51Z
source:         APNIC

% Information related to 'AS37989'

% Abuse contact for 'AS37989' is 'noc@dcs1.biz'

aut-num:        AS37989
as-name:        DCS1PTELTD-AS-AP
descr:          DCS1 Pte. Ltd.
country:        SG
org:            ORG-DPL42-AP
admin-c:        DPLA27-AP
tech-c:         DPLA27-AP
mnt-routes:     MAINT-DCS1PTELTD-SG
mnt-by:         APNIC-HM
mnt-lower:      MAINT-DCS1PTELTD-SG
mnt-irt:        IRT-DCS1PTELTD-SG
abuse-c:        AD1423-AP
last-modified:  2026-07-26T23:08:22Z
source:         APNIC

irt:            IRT-DCS1PTELTD-SG
address:        562a Serangoon Rd, Singapore SG 218178
e-mail:         noc@dcs1.biz
abuse-mailbox:  noc@dcs1.biz
admin-c:        DPLA27-AP
tech-c:         DPLA27-AP
auth:           # Filtered
remarks:        noc@dcs1.biz was validated on 2026-04-22
mnt-by:         MAINT-DCS1PTELTD-SG
last-modified:  2026-04-22T13:12:38Z
source:         APNIC

organisation:   ORG-DPL42-AP
org-name:       DCS1 Pte. Ltd.
org-type:       LIR
country:        SG
address:        3 Coleman St
address:        # 03-24
phone:          +6598551208
e-mail:         noc@dcs1.biz
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2026-05-25T13:22:51Z
source:         APNIC

role:           ABUSE DCS1PTELTDSG
country:        ZZ
address:        562a Serangoon Rd, Singapore SG 218178
phone:          +000000000
e-mail:         noc@dcs1.biz
admin-c:        DPLA27-AP
tech-c:         DPLA27-AP
nic-hdl:        AD1423-AP
remarks:        Generated from irt object IRT-DCS1PTELTD-SG
remarks:        noc@dcs1.biz was validated on 2026-04-22
abuse-mailbox:  noc@dcs1.biz
mnt-by:         APNIC-ABUSE
last-modified:  2026-04-22T13:13:01Z
source:         APNIC

role:           DCS1 Pte Ltd administrator
address:        562a Serangoon Rd, Singapore SG 218178
country:        SG
phone:          +6598551208
e-mail:         noc@dcs1.biz
admin-c:        DPLA27-AP
tech-c:         DPLA27-AP
nic-hdl:        DPLA27-AP
mnt-by:         MAINT-DCS1PTELTD-SG
last-modified:  2025-04-18T06:30:17Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.48 (WHOIS-US2)

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.apnic.net",
  "as_blocks" : [ {
    "as_block" : "AS37888 - AS38911",
    "description" : [ "APNIC ASN block" ],
    "admin_contacts" : [ "HM20-AP" ],
    "tech_contacts" : [ "HM20-AP" ],
    "remarks" : [ "These AS numbers are further assigned by APNIC", "to APNIC members and end-users in the APNIC region" ],
    "mnt_by" : [ "APNIC-HM" ],
    "mnt_lower" : [ "APNIC-HM" ],
    "date_updated" : "2009-09-29",
    "source" : "APNIC"
  }, {
    "as_block" : "AS37971 - AS38085",
    "description" : [ "APNIC ASN block" ],
    "admin_contacts" : [ "HM20-AP" ],
    "tech_contacts" : [ "HM20-AP" ],
    "remarks" : [ "These AS numbers are further assigned by APNIC", "to APNIC members and end-users in the APNIC region" ],
    "mnt_by" : [ "APNIC-HM" ],
    "mnt_lower" : [ "APNIC-HM" ],
    "date_updated" : "2008-09-04",
    "source" : "APNIC"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS37989",
    "as_name" : "DCS1PTELTD-AS-AP",
    "description" : [ "DCS1 Pte. Ltd." ],
    "country" : "SG",
    "organization" : "ORG-DPL42-AP",
    "admin_contacts" : [ "DPLA27-AP" ],
    "tech_contacts" : [ "DPLA27-AP" ],
    "abuse_contacts" : [ "AD1423-AP" ],
    "mnt_irt" : [ "IRT-DCS1PTELTD-SG" ],
    "mnt_lower" : [ "MAINT-DCS1PTELTD-SG" ],
    "mnt_routes" : [ "MAINT-DCS1PTELTD-SG" ],
    "mnt_by" : [ "APNIC-HM" ],
    "date_updated" : "2026-07-26",
    "source" : "APNIC"
  } ],
  "irt" : {
    "handle" : "IRT-DCS1PTELTD-SG",
    "address" : [ "562a Serangoon Rd, Singapore SG 218178" ],
    "street" : "Serangoon Rd",
    "city" : "Singapore",
    "zip_code" : "218178",
    "country" : "SG",
    "email" : [ "noc@dcs1.biz" ],
    "abuse_mailbox" : [ "noc@dcs1.biz" ],
    "admin_contacts" : [ "DPLA27-AP" ],
    "tech_contacts" : [ "DPLA27-AP" ],
    "remarks" : [ "noc@dcs1.biz was validated on 2026-04-22" ],
    "mnt_by" : [ "MAINT-DCS1PTELTD-SG" ],
    "date_updated" : "2026-04-22",
    "source" : "APNIC"
  },
  "organization" : {
    "handle" : "ORG-DPL42-AP",
    "name" : "DCS1 Pte. Ltd.",
    "type" : "LIR",
    "address" : [ "3 Coleman St", "# 03-24" ],
    "street" : "Coleman St # 03-24",
    "country" : [ "SG" ],
    "email" : [ "noc@dcs1.biz" ],
    "phone" : [ "+6598551208" ],
    "mnt_ref" : [ "APNIC-HM" ],
    "mnt_by" : [ "APNIC-HM" ],
    "date_updated" : "2026-05-25",
    "source" : "APNIC"
  },
  "administrative_contacts" : [ {
    "handle" : "DPLA27-AP",
    "name" : "DCS1 Pte Ltd administrator",
    "address" : [ "562a Serangoon Rd, Singapore SG 218178" ],
    "street" : "Serangoon Rd",
    "city" : "Singapore",
    "zip_code" : "218178",
    "country" : "SG",
    "email" : [ "noc@dcs1.biz" ],
    "phone" : [ "+6598551208" ],
    "admin_contacts" : [ "DPLA27-AP" ],
    "tech_contacts" : [ "DPLA27-AP" ],
    "mnt_by" : [ "MAINT-DCS1PTELTD-SG" ],
    "date_updated" : "2025-04-18",
    "source" : "APNIC",
    "addressCountry" : "SG"
  } ],
  "technical_contacts" : [ {
    "handle" : "DPLA27-AP",
    "name" : "DCS1 Pte Ltd administrator",
    "address" : [ "562a Serangoon Rd, Singapore SG 218178" ],
    "street" : "Serangoon Rd",
    "city" : "Singapore",
    "zip_code" : "218178",
    "country" : "SG",
    "email" : [ "noc@dcs1.biz" ],
    "phone" : [ "+6598551208" ],
    "admin_contacts" : [ "DPLA27-AP" ],
    "tech_contacts" : [ "DPLA27-AP" ],
    "mnt_by" : [ "MAINT-DCS1PTELTD-SG" ],
    "date_updated" : "2025-04-18",
    "source" : "APNIC",
    "addressCountry" : "SG"
  } ],
  "abuse_contacts" : [ {
    "handle" : "AD1423-AP",
    "name" : "ABUSE DCS1PTELTDSG",
    "address" : [ "562a Serangoon Rd, Singapore SG 218178" ],
    "street" : "Serangoon Rd",
    "city" : "Singapore",
    "zip_code" : "218178",
    "country" : "ZZ",
    "email" : [ "noc@dcs1.biz" ],
    "abuse_mailbox" : [ "noc@dcs1.biz" ],
    "phone" : [ "+000000000" ],
    "admin_contacts" : [ "DPLA27-AP" ],
    "tech_contacts" : [ "DPLA27-AP" ],
    "remarks" : [ "Generated from irt object IRT-DCS1PTELTD-SG", "noc@dcs1.biz was validated on 2026-04-22" ],
    "mnt_by" : [ "APNIC-ABUSE" ],
    "date_updated" : "2026-04-22",
    "source" : "APNIC",
    "addressCountry" : "SG"
  } ]
}

Peers

AS Number	Description	Country
AS24482	SG.GS	SG
AS9304	HGC Global Communications Limited	HK
AS45701	PT. Internet Madju Abad Milenindo	ID
AS64049	Reliance Jio Infocomm Pte Ltd Singapore	SG
AS6939	Hurricane Electric LLC	US
AS4775	Globe Telecoms	PH
AS56300	MyRepublic Ltd.	SG
AS45352	IP ServerOne Solutions Sdn Bhd	MY
AS56665	Proximus Luxembourg S.A.	LU
AS59217	Azonne Limited	HK
AS199524	G-Core Labs S.A.	LU
AS18106	Viewqwest Pte Ltd	SG
AS16276	OVH SAS	FR
AS55518	Singapore Internet Exchange Limited	SG
AS134654	PT Datautama Dinamika - NAP	ID
AS151326	DCConnect Communication Pte. Ltd.	SG
AS133210	EN Technologies Pte Ltd	SG
AS38195	Superloop	AU
AS215859	Hetzner Online GmbH	DE
AS147094	PT. MITRA VISIONER PRATAMA	ID
AS23947	PT.Mora Telematika Indonesia	ID
AS58495	PT Parsaoran Global Datatrans	ID
AS32590	Valve Corporation	US
AS6774	Belgacom International Carrier Services SA	BE
AS199524	G Core Labs S.A.	LU
AS18187	Ignite Telecommunications Inc	PH
AS7713	PT Telekomunikasi Indonesia	ID
AS138128	PT Solnet Indonesia	ID
AS35280	F5 Networks SARL	FR
AS56300	MYREPUBLIC LIMITED	SG
AS38001	NewMedia Express Pte Ltd	SG
AS49544	i3D.net B.V	NL
AS63927	RISE	HK

Upstreams

AS Number	Description	Country
AS64049	Reliance Jio Infocomm Pte Ltd Singapore	SG
AS6939	Hurricane Electric LLC	US
AS56300	MYREPUBLIC LIMITED	SG

Contacts

Email Contacts

noc@dcs1.biz

Abuse Contacts