ASN AS18377 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS18377?

AS18377 is listed under Viewqwest 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?

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AS18377 Viewqwest Pte Ltd | IPGeolocation.io

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Viewqwest Pte Ltd viewqwest.com

SG 0 Routes

AS Data

AS18377

AS18377 – Viewqwest Pte Ltd

AS Number	18377
AS Name	CDV-SG-AP
Organization	Viewqwest Pte Ltd (org-vpl3-ap)
Country	SG
Website	viewqwest.com
Number of IPv4 Routes	0
Number of IPv6 Routes	0
ASN type	ISP
Registry	APNIC
Date Allocated	N/A

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Raw Whois Response

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

% Information related to 'AS17653 - AS18431'

as-block:       AS17653 - AS18431
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:  2019-01-08T23:19:07Z
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 'AS18377'

% Abuse contact for 'AS18377' is 'abuse@viewqwest.com'

aut-num:        AS18377
as-name:        CDV-SG-AP
descr:          Clear Datavoice Service Provider
descr:          AS for Singapore Network
country:        SG
import:         from AS7473 action pref=100; accept ANY
import:         from AS4657 action pref=100; accept ANY
export:         to AS7473 announce AS18377
export:         to AS4657 announce AS18377
org:            ORG-VPL3-AP
admin-c:        CDN4-AP
tech-c:         CDN4-AP
abuse-c:        AE366-AP
notify:         hostmaster@cleardatavoice.com
mnt-lower:      MAINT-AP-CDV
mnt-routes:     MAINT-AP-CDV
mnt-by:         APNIC-HM
mnt-irt:        IRT-ESDUN-SG
last-modified:  2020-10-06T13:21:56Z
source:         APNIC

irt:            IRT-ESDUN-SG
address:        20 Bendemeer Road
e-mail:         noc.sg@viewqwest.com
abuse-mailbox:  abuse@viewqwest.com
admin-c:        VM33-AP
tech-c:         VM33-AP
auth:           # Filtered
remarks:        abuse@viewqwest.com was validated on 2025-11-13
remarks:        noc.sg@viewqwest.com was validated on 2026-02-09
mnt-by:         MAINT-SG-ESDUN
last-modified:  2026-02-09T03:36:44Z
source:         APNIC

organisation:   ORG-VPL3-AP
org-name:       Viewqwest Pte Ltd
org-type:       LIR
country:        SG
address:        20 Bendemeer Road # 01-09
phone:          +65-64911000
fax-no:         +65-64911001
e-mail:         accounts@viewqwest.com
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:14:51Z
source:         APNIC

role:           ABUSE ESDUNSG
country:        ZZ
address:        20 Bendemeer Road
phone:          +000000000
e-mail:         noc.sg@viewqwest.com
admin-c:        VM33-AP
tech-c:         VM33-AP
nic-hdl:        AE366-AP
remarks:        Generated from irt object IRT-ESDUN-SG
remarks:        abuse@viewqwest.com was validated on 2025-11-13
remarks:        noc.sg@viewqwest.com was validated on 2026-02-09
abuse-mailbox:  abuse@viewqwest.com
mnt-by:         APNIC-ABUSE
last-modified:  2026-02-09T03:37:17Z
source:         APNIC

role:           Clear DataVoice NOC
address:        20 Bendemeer Road
address:        #01-09
address:        Singapore 339914
country:        SG
phone:          +65 6827 5550
fax-no:         +65 6827 5557
e-mail:         noc.sg@viewqwest.com
remarks:        ---------------------------------------------------------
remarks:        send spam and abuse report to abuse@viewqwest.com
remarks:        send technical and routing report to noc.sg@viewqwest.com
remarks:        ---------------------------------------------------------
remarks:        http://www.viewqwest.com
admin-c:        KN57-AP
tech-c:         AA352-AP
nic-hdl:        CDN4-AP
mnt-by:         MAINT-AP-CDV
last-modified:  2020-03-31T04:16:10Z
source:         APNIC

% 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" : "AS17653 - AS18431",
    "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" : "2019-01-08",
    "source" : "APNIC"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS18377",
    "as_name" : "CDV-SG-AP",
    "description" : [ "Clear Datavoice Service Provider", "AS for Singapore Network" ],
    "country" : "SG",
    "import" : [ "from AS7473 action pref=100; accept ANY", "from AS4657 action pref=100; accept ANY" ],
    "export" : [ "to AS7473 announce AS18377", "to AS4657 announce AS18377" ],
    "organization" : "ORG-VPL3-AP",
    "admin_contacts" : [ "CDN4-AP" ],
    "tech_contacts" : [ "CDN4-AP" ],
    "abuse_contacts" : [ "AE366-AP" ],
    "notify" : [ "hostmaster@cleardatavoice.com" ],
    "mnt_irt" : [ "IRT-ESDUN-SG" ],
    "mnt_lower" : [ "MAINT-AP-CDV" ],
    "mnt_routes" : [ "MAINT-AP-CDV" ],
    "mnt_by" : [ "APNIC-HM" ],
    "date_updated" : "2020-10-06",
    "source" : "APNIC"
  } ],
  "irt" : {
    "handle" : "IRT-ESDUN-SG",
    "address" : [ "20 Bendemeer Road" ],
    "street" : "Bendemeer Road",
    "email" : [ "noc.sg@viewqwest.com" ],
    "abuse_mailbox" : [ "abuse@viewqwest.com" ],
    "admin_contacts" : [ "VM33-AP" ],
    "tech_contacts" : [ "VM33-AP" ],
    "remarks" : [ "abuse@viewqwest.com was validated on 2025-11-13", "noc.sg@viewqwest.com was validated on 2026-02-09" ],
    "mnt_by" : [ "MAINT-SG-ESDUN" ],
    "date_updated" : "2026-02-09",
    "source" : "APNIC"
  },
  "organization" : {
    "handle" : "ORG-VPL3-AP",
    "name" : "Viewqwest Pte Ltd",
    "type" : "LIR",
    "address" : [ "20 Bendemeer Road # 01-09" ],
    "street" : "Bendemeer Road # 01-09",
    "country" : [ "SG" ],
    "email" : [ "accounts@viewqwest.com" ],
    "phone" : [ "+65-64911000" ],
    "fax_no" : [ "+65-64911001" ],
    "mnt_ref" : [ "APNIC-HM" ],
    "mnt_by" : [ "APNIC-HM" ],
    "date_updated" : "2023-09-05",
    "source" : "APNIC"
  },
  "administrative_contacts" : [ {
    "handle" : "CDN4-AP",
    "name" : "Clear DataVoice NOC",
    "address" : [ "20 Bendemeer Road", "#01-09", "Singapore 339914" ],
    "street" : "Bendemeer Road #01-09",
    "city" : "Singapore",
    "zip_code" : "339914",
    "country" : "SG",
    "email" : [ "noc.sg@viewqwest.com" ],
    "phone" : [ "+65 6827 5550" ],
    "fax_no" : [ "+65 6827 5557" ],
    "admin_contacts" : [ "KN57-AP" ],
    "tech_contacts" : [ "AA352-AP" ],
    "remarks" : [ "---------------------------------------------------------", "send spam and abuse report to abuse@viewqwest.com", "send technical and routing report to noc.sg@viewqwest.com", "---------------------------------------------------------", "http://www.viewqwest.com" ],
    "mnt_by" : [ "MAINT-AP-CDV" ],
    "date_updated" : "2020-03-31",
    "source" : "APNIC"
  } ],
  "technical_contacts" : [ {
    "handle" : "CDN4-AP",
    "name" : "Clear DataVoice NOC",
    "address" : [ "20 Bendemeer Road", "#01-09", "Singapore 339914" ],
    "street" : "Bendemeer Road #01-09",
    "city" : "Singapore",
    "zip_code" : "339914",
    "country" : "SG",
    "email" : [ "noc.sg@viewqwest.com" ],
    "phone" : [ "+65 6827 5550" ],
    "fax_no" : [ "+65 6827 5557" ],
    "admin_contacts" : [ "KN57-AP" ],
    "tech_contacts" : [ "AA352-AP" ],
    "remarks" : [ "---------------------------------------------------------", "send spam and abuse report to abuse@viewqwest.com", "send technical and routing report to noc.sg@viewqwest.com", "---------------------------------------------------------", "http://www.viewqwest.com" ],
    "mnt_by" : [ "MAINT-AP-CDV" ],
    "date_updated" : "2020-03-31",
    "source" : "APNIC"
  } ],
  "abuse_contacts" : [ {
    "handle" : "AE366-AP",
    "name" : "ABUSE ESDUNSG",
    "address" : [ "20 Bendemeer Road" ],
    "street" : "Bendemeer Road",
    "country" : "ZZ",
    "email" : [ "noc.sg@viewqwest.com" ],
    "abuse_mailbox" : [ "abuse@viewqwest.com" ],
    "phone" : [ "+000000000" ],
    "admin_contacts" : [ "VM33-AP" ],
    "tech_contacts" : [ "VM33-AP" ],
    "remarks" : [ "Generated from irt object IRT-ESDUN-SG", "abuse@viewqwest.com was validated on 2025-11-13", "noc.sg@viewqwest.com was validated on 2026-02-09" ],
    "mnt_by" : [ "APNIC-ABUSE" ],
    "date_updated" : "2026-02-09",
    "source" : "APNIC"
  } ]
}