What is ASN AS138433?

ASN AS138433 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS138433?

AS138433 is listed under GMO GlobalSign 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.

AS138433 GMO GlobalSign Pte Ltd

ASN Lookup Tool

GMO GlobalSign Pte Ltd globalsign.com

SG 4 Routes

AS Data

AS138433

AS138433 – GMO GlobalSign Pte Ltd

AS Number	138433
AS Name	GLOBALSIGN-AS-AP
Organization	GMO GlobalSign Pte Ltd (org-ggpl1-ap)
Country	SG
Website	globalsign.com
Number of IPv4 Routes	3
Number of IPv6 Routes	1
ASN type	BUSINESS
Registry	APNIC
Date Allocated	N/A

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Use ASN data for AS138433 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
103.142.236.0/23	AS138433	GMO GlobalSign Pte Ltd	GMO GlobalSign Pte Ltd	512
116.51.29.96/27	AS138433	GMO GlobalSign Pte Ltd	NTT INGRAM MICRO	32
209.146.58.0/23	AS138433	GMO GlobalSign Pte Ltd	GMO GlobalSign Pte Ltd	512
2001:df1:9580::/48	AS138433	GMO GlobalSign Pte Ltd	GMO GlobalSign Pte Ltd	~1×10²⁴

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 'AS138433'

% Abuse contact for 'AS138433' is 'infrastructure@globalsign.com'

aut-num:        AS138433
as-name:        GLOBALSIGN-AS-AP
descr:          GMO GlobalSign Pte Ltd
country:        SG
org:            ORG-GGPL1-AP
admin-c:        GGPL2-AP
tech-c:         GGPL2-AP
abuse-c:        AG977-AP
mnt-routes:     MAINT-GLOBALSIGN-SG
mnt-by:         APNIC-HM
mnt-irt:        IRT-GLOBALSIGN-SG
last-modified:  2020-11-10T13:04:47Z
source:         APNIC

irt:            IRT-GLOBALSIGN-SG
address:        20 Anson Road,
e-mail:         infrastructure@globalsign.com
abuse-mailbox:  infrastructure@globalsign.com
admin-c:        GGPL2-AP
tech-c:         GGPL2-AP
auth:           # Filtered
remarks:        infrastructure@globalsign.com was validated on 2026-03-04
mnt-by:         MAINT-GLOBALSIGN-SG
last-modified:  2026-03-04T07:28:01Z
source:         APNIC

organisation:   ORG-GGPL1-AP
org-name:       GMO GlobalSign Pte Ltd
org-type:       LIR
country:        SG
address:        1 Wallich Street 25-01 A
address:        Guoco Tower Singapore 078881
phone:          +65-6536-5045
fax-no:         +65-6536-1954
e-mail:         infrastructure@globalsign.com
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:17:26Z
source:         APNIC

role:           ABUSE GLOBALSIGNSG
country:        ZZ
address:        20 Anson Road,
phone:          +000000000
e-mail:         infrastructure@globalsign.com
admin-c:        GGPL2-AP
tech-c:         GGPL2-AP
nic-hdl:        AG977-AP
remarks:        Generated from irt object IRT-GLOBALSIGN-SG
remarks:        infrastructure@globalsign.com was validated on 2026-03-04
abuse-mailbox:  infrastructure@globalsign.com
mnt-by:         APNIC-ABUSE
last-modified:  2026-03-04T07:28:24Z
source:         APNIC

role:           GMO GlobalSign Pte Ltd administrator
address:        1 Wallich Street #25-01A  Guoco Tower  Singapore 078881
country:        SG
phone:          +65-6536-5045
fax-no:         +65-6536-5045
e-mail:         infrastructure@globalsign.com
admin-c:        GGPL2-AP
tech-c:         GGPL2-AP
nic-hdl:        GGPL2-AP
mnt-by:         MAINT-GLOBALSIGN-SG
last-modified:  2019-04-10T04:14:16Z
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-UK2)

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" : "AS138433",
    "as_name" : "GLOBALSIGN-AS-AP",
    "description" : [ "GMO GlobalSign Pte Ltd" ],
    "country" : "SG",
    "organization" : "ORG-GGPL1-AP",
    "admin_contacts" : [ "GGPL2-AP" ],
    "tech_contacts" : [ "GGPL2-AP" ],
    "abuse_contacts" : [ "AG977-AP" ],
    "mnt_irt" : [ "IRT-GLOBALSIGN-SG" ],
    "mnt_routes" : [ "MAINT-GLOBALSIGN-SG" ],
    "mnt_by" : [ "APNIC-HM" ],
    "date_updated" : "2020-11-10",
    "source" : "APNIC"
  } ],
  "irt" : {
    "handle" : "IRT-GLOBALSIGN-SG",
    "address" : [ "20 Anson Road," ],
    "street" : "Anson Road",
    "email" : [ "infrastructure@globalsign.com" ],
    "abuse_mailbox" : [ "infrastructure@globalsign.com" ],
    "admin_contacts" : [ "GGPL2-AP" ],
    "tech_contacts" : [ "GGPL2-AP" ],
    "remarks" : [ "infrastructure@globalsign.com was validated on 2026-03-04" ],
    "mnt_by" : [ "MAINT-GLOBALSIGN-SG" ],
    "date_updated" : "2026-03-04",
    "source" : "APNIC"
  },
  "organization" : {
    "handle" : "ORG-GGPL1-AP",
    "name" : "GMO GlobalSign Pte Ltd",
    "type" : "LIR",
    "address" : [ "1 Wallich Street 25-01 A", "Guoco Tower Singapore 078881" ],
    "street" : "Wallich Street",
    "city" : "Singapore",
    "zip_code" : "078881",
    "country" : [ "SG" ],
    "email" : [ "infrastructure@globalsign.com" ],
    "phone" : [ "+65-6536-5045" ],
    "fax_no" : [ "+65-6536-1954" ],
    "mnt_ref" : [ "APNIC-HM" ],
    "mnt_by" : [ "APNIC-HM" ],
    "date_updated" : "2023-09-05",
    "source" : "APNIC"
  },
  "administrative_contacts" : [ {
    "handle" : "GGPL2-AP",
    "name" : "GMO GlobalSign Pte Ltd administrator",
    "address" : [ "1 Wallich Street #25-01A  Guoco Tower  Singapore 078881" ],
    "street" : "Wallich Street",
    "city" : "Singapore",
    "zip_code" : "078881",
    "country" : "SG",
    "email" : [ "infrastructure@globalsign.com" ],
    "phone" : [ "+65-6536-5045" ],
    "fax_no" : [ "+65-6536-5045" ],
    "admin_contacts" : [ "GGPL2-AP" ],
    "tech_contacts" : [ "GGPL2-AP" ],
    "mnt_by" : [ "MAINT-GLOBALSIGN-SG" ],
    "date_updated" : "2019-04-10",
    "source" : "APNIC"
  } ],
  "technical_contacts" : [ {
    "handle" : "GGPL2-AP",
    "name" : "GMO GlobalSign Pte Ltd administrator",
    "address" : [ "1 Wallich Street #25-01A  Guoco Tower  Singapore 078881" ],
    "street" : "Wallich Street",
    "city" : "Singapore",
    "zip_code" : "078881",
    "country" : "SG",
    "email" : [ "infrastructure@globalsign.com" ],
    "phone" : [ "+65-6536-5045" ],
    "fax_no" : [ "+65-6536-5045" ],
    "admin_contacts" : [ "GGPL2-AP" ],
    "tech_contacts" : [ "GGPL2-AP" ],
    "mnt_by" : [ "MAINT-GLOBALSIGN-SG" ],
    "date_updated" : "2019-04-10",
    "source" : "APNIC"
  } ],
  "abuse_contacts" : [ {
    "handle" : "AG977-AP",
    "name" : "ABUSE GLOBALSIGNSG",
    "address" : [ "20 Anson Road," ],
    "street" : "Anson Road",
    "country" : "ZZ",
    "email" : [ "infrastructure@globalsign.com" ],
    "abuse_mailbox" : [ "infrastructure@globalsign.com" ],
    "phone" : [ "+000000000" ],
    "admin_contacts" : [ "GGPL2-AP" ],
    "tech_contacts" : [ "GGPL2-AP" ],
    "remarks" : [ "Generated from irt object IRT-GLOBALSIGN-SG", "infrastructure@globalsign.com was validated on 2026-03-04" ],
    "mnt_by" : [ "APNIC-ABUSE" ],
    "date_updated" : "2026-03-04",
    "source" : "APNIC"
  } ]
}

Peers

AS Number	Description	Country
AS4657	StarHub Ltd	SG
AS1239	Cogent Communications, LLC	US
AS4657	Starhub Ltd.	SG
AS2914	NTT America, Inc.	US
AS174	Cogent Communications, LLC	US

Upstreams

AS Number	Description	Country
AS4657	Starhub Ltd.	SG
AS2914	NTT America, Inc.	US
AS174	Cogent Communications, LLC	US

Contacts

Email Contacts

infrastructure@globalsign.com hostmaster@idnic.net

Abuse Contacts

infrastructure@globalsign.com