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

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	2006-03-24

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:        PO Box 3646
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:  2026-08-26T00:40:00Z
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:        PO Box 3646
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:  2026-08-26T00:40:00Z
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
AS20326	TeraSwitch Networks Inc.	US
AS2906	Netflix Streaming Services Inc.	US
AS9226	1 Net Singapore Pte Ltd	SG
AS150178	Exabyte ltd	BD
AS45352	IP ServerOne Solutions Sdn Bhd	MY
AS4229	Zenlayer Inc	US
AS216211	CYBERVERSE LLC	US
AS3856	Packet Clearing House, Inc.	US
AS139341	ACEVILLE PTE.LTD.	SG
AS9264	The most preeminent academic institute in Taiwan, the Republic of China	TW
AS132696	SGIX Services	SG
AS63399	Dialpad, Inc.	US
AS24429	Zhejiang Taobao Network Co.,Ltd	CN
AS51847	Nearoute Limited	HK
AS6461	Zayo Bandwidth	US
AS134078	NETPLUZ HOLDINGS PRIVATE LIMITED	SG
AS202053	UpCloud Ltd	FI
AS34655	JWE S.a r.l.	LU
AS58495	PT Parsaoran Global Datatrans	ID
AS38040	TOT Public Company Limited	TH
AS399077	Tcloudnet	US
AS32590	Valve Corporation	US
AS6507	Riot Games, Inc	US
AS58717	Summit Communications Limited	BD
AS138915	Kaopu Cloud HK Limited	HK
AS133159	Mammoth Media Pty Ltd	AU
AS63516	Transhybrid Internet Xchange	ID
AS9930	TT DOTCOM SDN BHD	MY
AS138699	TIKTOK PTE. LTD.	SG
AS55805	MobiCom Corporation	MN
AS42473	ANEXIA Internetdienstleistungs GmbH	AT
AS38001	NewMedia Express Pte Ltd	SG
AS396986	Bytedance Inc.	US
AS136106	PT. Mega Akses Persada	ID
AS328366	FIRSTNET TECHNOLOGY SERVICES PTY LTD	ZA
AS32787	Akamai Technologies, Inc.	US
AS38158	PT. Cyberindo Aditama	ID
AS30103	Zoom Video Communications, Inc	US
AS58807	China Mobile International Limited	HK
AS61292	Blix Group AS	NO
AS140570	Hong Kong Beecloud System Technology Services Limited	HK
AS63927	RISE ASIA TECHNOLOGY LIMITED	PH
AS137991	Lifeway Singapore Pte. Ltd.	SG
AS142631	Metro Lightspeed	MY
AS132816	SimplerCloud Pte Ltd	SG
AS7713	Telekomunikasi Indonesia PT	ID
AS23856	SPTEL PTE. LTD.	SG
AS8849	Melbikomas UAB	LT
AS63741	DCNET TELECOM	VN
AS132337	AXCLUSIVE PTE. LTD.	SG
AS132203	Shenzhen Tencent Computer Systems Company Limited	CN
AS14061	DigitalOcean, LLC	US
AS134654	PT Datautama Dinamika NAP	ID
AS45796	UIH / BB Connect	TH
AS997	Beyotta Services LLP	SG
AS55518	Singapore Internet Exchange Limited	SG
AS136557	Host Universal Pty Ltd	AU
AS23764	China Telecom Global Limited	HK
AS139901	Apple Communication Ltd.	BD
AS133210	EN Technologies Pte Ltd	SG

Upstreams

AS Number	Description	Country
AS9304	HGC Global Communications Limited	HK
AS20326	TeraSwitch Networks Inc.	US
AS6939	Hurricane Electric LLC	US
AS56300	MYREPUBLIC LIMITED	SG

Contacts

Email Contacts

noc@dcs1.biz

Abuse Contacts