What is ASN AS137995?

ASN AS137995 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS137995?

AS137995 is listed under Shuangyu Communications Technology Co., Limited.

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?

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AS137995 Shuangyu Communications Technology Co., Limited

Shuangyu Communications Technology Co., Limited syctnet.com

HK 8 Routes

AS Data

AS137995

AS137995 – Shuangyu Communications Technology Co., Limited

AS Number	137995
AS Name	SHUANGYU-AS-AP
Organization	Shuangyu Communications Technology Co., Limited (org-sctc1-ap)
Country	HK
Website	syctnet.com
Number of IPv4 Routes	7
Number of IPv6 Routes	1
ASN type	BUSINESS
Registry	APNIC
Date Allocated	N/A

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
103.131.178.0/23	AS137995	Shuangyu Communications Technology Co., Limited	HONGKONG YUN NET	512
103.131.178.0/24	AS137995	Shuangyu Communications Technology Co., Limited	HONGKONG YUN NET	256
103.131.177.0/24	AS137995	Shuangyu Communications Technology Co., Limited	HONGKONG YUN NET	256
103.131.176.0/24	AS137995	Shuangyu Communications Technology Co., Limited	HONGKONG YUN NET	256
103.84.137.0/24	AS137995	Shuangyu Communications Technology Co., Limited	Hong Kong SY Technology co.,Ltd.	256
103.131.176.0/23	AS137995	Shuangyu Communications Technology Co., Limited	HONGKONG YUN NET	512
103.84.139.0/24	AS137995	Shuangyu Communications Technology Co., Limited	Hong Kong SY Technology co.,Ltd.	256
2403:cec0::/32	AS137995	Shuangyu Communications Technology Co., Limited	Shen Zhen Shi Fang Technology Co., Limited	~79×10²⁷

Raw Whois Response

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

% Information related to 'AS137530 - AS138553'

as-block:       AS137530 - AS138553
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:  2017-12-08T06:45:58Z
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 'AS137995'

% Abuse contact for 'AS137995' is 'mark@syctnet.com'

aut-num:        AS137995
as-name:        SHUANGYU-AS-AP
descr:          Shuangyu Communications Technology Co., Limited
descr:          RM 1502-196 EASEY COMM BLDG
descr:          253-261 HENNESSY RD WANCHAI
descr:          HONG KONG
country:        HK
export:         to AS6939 announce AS137995:AS-ALL
export:         to AS136237 announce AS137995:AS-ALL
export:         to AS10103 announce AS137995:AS-ALL
export:         to AS139743 announce AS137995:AS-ALL
export:         to AS140595 announce AS137995:AS-ALL
export:         to AS58057 announce AS137995:AS-ALL
export:         to AS20473  announce AS137995:AS-ALL
org:            ORG-SCTC1-AP
sponsoring-org: ORG-SSCT1-AP
admin-c:        HSCT1-AP
tech-c:         HSCT1-AP
abuse-c:        AS2258-AP
mnt-lower:      MAINT-SSCTC-CN
mnt-routes:     MAINT-SSCTC-CN
mnt-by:         APNIC-HM
mnt-irt:        IRT-SSCTC-CN
last-modified:  2023-09-05T03:53:33Z
source:         APNIC

irt:            IRT-SSCTC-CN
address:        Room B303, Chuangwan, Block A,, 519 Liyue Road, Minhang District,, Shanghai, China, shanghai shangha
e-mail:         mark@syctnet.com
abuse-mailbox:  mark@syctnet.com
admin-c:        HSCT1-AP
tech-c:         HSCT1-AP
auth:           # Filtered
remarks:        mark@syctnet.com was validated on 2025-11-25
mnt-by:         MAINT-SSCTC-CN
last-modified:  2025-11-25T14:34:19Z
source:         APNIC

organisation:   ORG-SCTC1-AP
org-name:       Shuangyu Communications Technology Co., Limited
org-type:       OTHER
address:        Tsuen Wan HongKong
country:        HK
phone:          +852-3891499
e-mail:         liu.rodge@gmail.com
admin-c:        HSCT1-AP
tech-c:         HSCT1-AP
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T03:53:32Z
source:         APNIC

role:           ABUSE SSCTCCN
country:        ZZ
address:        Room B303, Chuangwan, Block A,, 519 Liyue Road, Minhang District,, Shanghai, China, shanghai shangha
phone:          +000000000
e-mail:         mark@syctnet.com
admin-c:        HSCT1-AP
tech-c:         HSCT1-AP
nic-hdl:        AS2258-AP
remarks:        Generated from irt object IRT-SSCTC-CN
remarks:        mark@syctnet.com was validated on 2025-11-25
abuse-mailbox:  mark@syctnet.com
mnt-by:         APNIC-ABUSE
last-modified:  2025-11-25T14:34:34Z
source:         APNIC

role:           HongKong Shuangyu Communication Technology coLtd
address:        Tsuen Wan HongKong
country:        HK
phone:          +852-3891499
e-mail:         liu.rodge@gmail.com
admin-c:        SSCT1-AP
tech-c:         SSCT1-AP
nic-hdl:        HSCT1-AP
mnt-by:         MAINT-SSCTC-CN
last-modified:  2022-07-06T08:17:49Z
source:         APNIC

% Information related to 'AS137530 - AS138553'

as-block:       AS137530 - AS138553
descr:          APNIC ASN block
admin-c:        IA55-AP
tech-c:         IH123-AP
mnt-by:         MNT-APJII-ID
mnt-lower:      MNT-APJII-ID
last-modified:  2026-02-16T12:29:14Z
source:         IDNIC

role:           ID-NIC ADMINISTRATORS
address:        Indonesian Network Information Center
address:        ID-NIC
address:        Cyber Building 11th Floor
address:        Jakarta 12710
country:        ID
phone:          +62-21-52960634
fax-no:         +62-21-52960635
e-mail:         hostmaster@idnic.net
admin-c:        IH288-AP
tech-c:         IH288-AP
nic-hdl:        IA55-AP
notify:         hostmaster@idnic.net
mnt-by:         MNT-APJII-ID
last-modified:  2026-02-25T04:06:45Z
source:         IDNIC

role:           ID-NIC HOSTMASTERS
address:        Indonesian Network Information Center
address:        ID-NIC
address:        Cyber Building 11th Floor
address:        Jakarta 12710
country:        ID
phone:          +62-21-52960634
fax-no:         +62-21-52960635
e-mail:         hostmaster@idnic.net
remarks:        spam and abuse report : abuse@apjii.or.id
remarks:        technical and routing : support@apjii.or.id
remarks:        administrative request : admin@apjii.or.id
remarks:        IDNIC hostmasters role object
admin-c:        IH1-AP
tech-c:         IH1-AP
nic-hdl:        IH123-AP
notify:         hostmaster@idnic.net
mnt-by:         MNT-APJII-ID
last-modified:  2024-07-10T05:48:59Z
source:         IDNIC

% This query was served by the APNIC Whois Service version 1.88.34 (WHOIS-US2)

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.apnic.net",
  "as_blocks" : [ {
    "as_block" : "AS137530 - AS138553",
    "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" : "2017-12-08",
    "source" : "APNIC"
  }, {
    "as_block" : "AS137530 - AS138553",
    "description" : [ "APNIC ASN block" ],
    "admin_contacts" : [ "IA55-AP" ],
    "tech_contacts" : [ "IH123-AP" ],
    "mnt_by" : [ "MNT-APJII-ID" ],
    "mnt_lower" : [ "MNT-APJII-ID" ],
    "date_updated" : "2026-02-16",
    "source" : "IDNIC"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS137995",
    "as_name" : "SHUANGYU-AS-AP",
    "description" : [ "Shuangyu Communications Technology Co., Limited", "RM 1502-196 EASEY COMM BLDG", "253-261 HENNESSY RD WANCHAI", "HONG KONG" ],
    "country" : "HK",
    "export" : [ "to AS6939 announce AS137995:AS-ALL", "to AS136237 announce AS137995:AS-ALL", "to AS10103 announce AS137995:AS-ALL", "to AS139743 announce AS137995:AS-ALL", "to AS140595 announce AS137995:AS-ALL", "to AS58057 announce AS137995:AS-ALL", "to AS20473  announce AS137995:AS-ALL" ],
    "organization" : "ORG-SCTC1-AP",
    "sponsoring_organization" : "ORG-SSCT1-AP",
    "admin_contacts" : [ "HSCT1-AP" ],
    "tech_contacts" : [ "HSCT1-AP" ],
    "abuse_contacts" : [ "AS2258-AP" ],
    "mnt_irt" : [ "IRT-SSCTC-CN" ],
    "mnt_lower" : [ "MAINT-SSCTC-CN" ],
    "mnt_routes" : [ "MAINT-SSCTC-CN" ],
    "mnt_by" : [ "APNIC-HM" ],
    "date_updated" : "2023-09-05",
    "source" : "APNIC"
  } ],
  "irt" : {
    "handle" : "IRT-SSCTC-CN",
    "address" : [ "Room B303, Chuangwan, Block A,, 519 Liyue Road, Minhang District,, Shanghai, China, shanghai shangha" ],
    "street" : "Liyue Road",
    "city" : "Shanghai",
    "country" : "CHINA",
    "email" : [ "mark@syctnet.com" ],
    "abuse_mailbox" : [ "mark@syctnet.com" ],
    "admin_contacts" : [ "HSCT1-AP" ],
    "tech_contacts" : [ "HSCT1-AP" ],
    "remarks" : [ "mark@syctnet.com was validated on 2025-11-25" ],
    "mnt_by" : [ "MAINT-SSCTC-CN" ],
    "date_updated" : "2025-11-25",
    "source" : "APNIC"
  },
  "organization" : {
    "handle" : "ORG-SCTC1-AP",
    "name" : "Shuangyu Communications Technology Co., Limited",
    "type" : "OTHER",
    "address" : [ "Tsuen Wan HongKong" ],
    "city" : "Tsuen Wan",
    "country" : [ "HK" ],
    "email" : [ "liu.rodge@gmail.com" ],
    "phone" : [ "+852-3891499" ],
    "admin_contacts" : [ "HSCT1-AP" ],
    "tech_contacts" : [ "HSCT1-AP" ],
    "mnt_ref" : [ "APNIC-HM" ],
    "mnt_by" : [ "APNIC-HM" ],
    "date_updated" : "2023-09-05",
    "source" : "APNIC",
    "addressCountry" : "HONGKONG"
  },
  "administrative_contacts" : [ {
    "handle" : "HSCT1-AP",
    "name" : "HongKong Shuangyu Communication Technology coLtd",
    "address" : [ "Tsuen Wan HongKong" ],
    "city" : "Tsuen Wan",
    "country" : "HK",
    "email" : [ "liu.rodge@gmail.com" ],
    "phone" : [ "+852-3891499" ],
    "admin_contacts" : [ "SSCT1-AP" ],
    "tech_contacts" : [ "SSCT1-AP" ],
    "mnt_by" : [ "MAINT-SSCTC-CN" ],
    "date_updated" : "2022-07-06",
    "source" : "APNIC",
    "addressCountry" : "HONGKONG"
  } ],
  "technical_contacts" : [ {
    "handle" : "HSCT1-AP",
    "name" : "HongKong Shuangyu Communication Technology coLtd",
    "address" : [ "Tsuen Wan HongKong" ],
    "city" : "Tsuen Wan",
    "country" : "HK",
    "email" : [ "liu.rodge@gmail.com" ],
    "phone" : [ "+852-3891499" ],
    "admin_contacts" : [ "SSCT1-AP" ],
    "tech_contacts" : [ "SSCT1-AP" ],
    "mnt_by" : [ "MAINT-SSCTC-CN" ],
    "date_updated" : "2022-07-06",
    "source" : "APNIC",
    "addressCountry" : "HONGKONG"
  } ],
  "abuse_contacts" : [ {
    "handle" : "AS2258-AP",
    "name" : "ABUSE SSCTCCN",
    "address" : [ "Room B303, Chuangwan, Block A,, 519 Liyue Road, Minhang District,, Shanghai, China, shanghai shangha" ],
    "street" : "Liyue Road",
    "city" : "Shanghai",
    "country" : "ZZ",
    "email" : [ "mark@syctnet.com" ],
    "abuse_mailbox" : [ "mark@syctnet.com" ],
    "phone" : [ "+000000000" ],
    "admin_contacts" : [ "HSCT1-AP" ],
    "tech_contacts" : [ "HSCT1-AP" ],
    "remarks" : [ "Generated from irt object IRT-SSCTC-CN", "mark@syctnet.com was validated on 2025-11-25" ],
    "mnt_by" : [ "APNIC-ABUSE" ],
    "date_updated" : "2025-11-25",
    "source" : "APNIC",
    "addressCountry" : "CHINA"
  } ]
}

Peers

AS Number	Description	Country
AS39120	Convergenze S.p.A.	IT
AS24482	SG.GS	SG
AS4635	Hong Kong Internet Exchange--Route Server 1	HK
AS58057	Securebit AG	CH
AS136237	Shuangyu Communication Technology co.,Ltd.	CN
AS49544	I3DNET	NL
AS6939	Hurricane Electric LLC	US
AS32590	Valve Corporation	US
AS8359	MTS PJSC	RU
AS20473	The Constant Company, LLC	US

Upstreams

AS Number	Description	Country
AS39120	Convergenze S.p.A.	IT
AS41095	IPTP LTD	GB
AS6939	Hurricane Electric LLC	US
AS8359	MTS PJSC	RU
AS20473	The Constant Company, LLC	US
AS4635	The Hong Kong Internet Exchange Limited	HK
AS136237	Shanghai Shuangyu Communication Technology co.,Ltd.	HK
AS174	Cogent Communications, LLC	US

Downstreams

AS Number	Description	Country
AS139743	Shen Zhen Shi Fang Technology Co., Limited	CN
AS136237	Shanghai Shuangyu Communication Technology co.,Ltd.	HK

Contacts

Email Contacts

hostmaster@idnic.net mark@syctnet.com liu.rodge@gmail.com

Abuse Contacts

mark@syctnet.com

Legacy Routes

103.131.179.0/24

ASN Lookup Tool

ASN Summary