What is ASN AS153643?

ASN AS153643 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS153643?

AS153643 is listed under Central Highlands Water.

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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AS153643 Central Highlands Water

ASN Lookup Tool

Central Highlands Water chw.net.au

AU 1 Routes

AS Data

AS153643

AS153643 – Central Highlands Water

AS Number	153643
AS Name	CHW-AS-AP
Organization	Central Highlands Water (org-chw1-ap)
Country	AU
Website	chw.net.au
Number of IPv4 Routes	1
Number of IPv6 Routes	0
ASN type	GOVERNMENT
Registry	APNIC
Date Allocated	N/A

ASN Intelligence API for production workflows

Use ASN data for AS153643 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
163.223.184.0/24	AS153643	Central Highlands Water	Central Highlands Water	256

Raw Whois Response

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

% Information related to 'AS152890 - AS153913'

as-block:       AS152890 - AS153913
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:  2023-05-11T00:08:48Z
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 'AS153643'

% Abuse contact for 'AS153643' is 'net-abuse@chw.net.au'

aut-num:        AS153643
as-name:        CHW-AS-AP
descr:          Central Highlands Region Water Corporation
country:        AU
org:            ORG-CHW1-AP
admin-c:        NA1105-AP
tech-c:         NA1105-AP
mnt-by:         APNIC-HM
mnt-lower:      MAINT-AU-CHW
mnt-routes:     MAINT-AU-CHW
mnt-irt:        IRT-CHW-NON-AU
abuse-c:        AC1700-AP
last-modified:  2025-03-04T01:10:46Z
source:         APNIC

irt:            IRT-CHW-NON-AU
address:        Central Highlands Water
address:        PO Box 152
address:        Ballarat
address:        VIC 3353
e-mail:         net-admin@chw.net.au
abuse-mailbox:  net-abuse@chw.net.au
admin-c:        NA1105-AP
tech-c:         NA1105-AP
auth:           # Filtered
remarks:        net-admin@chw.net.au was validated on 2026-03-17
remarks:        net-abuse@chw.net.au was validated on 2026-03-17
mnt-by:         MAINT-AU-CHW
last-modified:  2026-03-17T21:17:25Z
source:         APNIC

organisation:   ORG-CHW1-AP
org-name:       Central Highlands Water
org-type:       LIR
country:        AU
address:        7 Learmonth Road
address:        Wendouree
phone:          +61-3-53203134
fax-no:         +61-3-53203299
e-mail:         helpdesk@chw.net.au
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:15:41Z
source:         APNIC

role:           ABUSE CHWNONAU
country:        ZZ
address:        Central Highlands Water
address:        PO Box 152
address:        Ballarat
address:        VIC 3353
phone:          +000000000
e-mail:         net-admin@chw.net.au
admin-c:        NA1105-AP
tech-c:         NA1105-AP
nic-hdl:        AC1700-AP
remarks:        Generated from irt object IRT-CHW-NON-AU
remarks:        net-admin@chw.net.au was validated on 2026-03-17
remarks:        net-abuse@chw.net.au was validated on 2026-03-17
abuse-mailbox:  net-abuse@chw.net.au
mnt-by:         APNIC-ABUSE
last-modified:  2026-03-17T21:17:38Z
source:         APNIC

role:           Network Administrator
address:        7 Learmonth Road, Wendouree, Victoria 3355
country:        AU
phone:          +61 3 5320 3106
e-mail:         net-admin@chw.net.au
admin-c:        YJG19-AP
tech-c:         YJG19-AP
nic-hdl:        NA1105-AP
mnt-by:         MAINT-CHW-IT
last-modified:  2024-09-04T00:53:37Z
source:         APNIC

% Information related to 'AS152890 - AS153913'

as-block:       AS152890 - AS153913
descr:          APNIC ASN block
admin-c:        IA55-AP
tech-c:         IH123-AP
mnt-by:         MNT-APJII-ID
mnt-lower:      MNT-APJII-ID
last-modified:  2026-02-14T00:38:07Z
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" : "AS152890 - AS153913",
    "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" : "2023-05-11",
    "source" : "APNIC"
  }, {
    "as_block" : "AS152890 - AS153913",
    "description" : [ "APNIC ASN block" ],
    "admin_contacts" : [ "IA55-AP" ],
    "tech_contacts" : [ "IH123-AP" ],
    "mnt_by" : [ "MNT-APJII-ID" ],
    "mnt_lower" : [ "MNT-APJII-ID" ],
    "date_updated" : "2026-02-14",
    "source" : "IDNIC"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS153643",
    "as_name" : "CHW-AS-AP",
    "description" : [ "Central Highlands Region Water Corporation" ],
    "country" : "AU",
    "organization" : "ORG-CHW1-AP",
    "admin_contacts" : [ "NA1105-AP" ],
    "tech_contacts" : [ "NA1105-AP" ],
    "abuse_contacts" : [ "AC1700-AP" ],
    "mnt_irt" : [ "IRT-CHW-NON-AU" ],
    "mnt_lower" : [ "MAINT-AU-CHW" ],
    "mnt_routes" : [ "MAINT-AU-CHW" ],
    "mnt_by" : [ "APNIC-HM" ],
    "date_updated" : "2025-03-04",
    "source" : "APNIC"
  } ],
  "irt" : {
    "handle" : "IRT-CHW-NON-AU",
    "address" : [ "Central Highlands Water", "PO Box 152", "Ballarat", "VIC 3353" ],
    "city" : "Ballarat",
    "state" : "VIC",
    "zip_code" : "3353",
    "email" : [ "net-admin@chw.net.au" ],
    "abuse_mailbox" : [ "net-abuse@chw.net.au" ],
    "admin_contacts" : [ "NA1105-AP" ],
    "tech_contacts" : [ "NA1105-AP" ],
    "remarks" : [ "net-admin@chw.net.au was validated on 2026-03-17", "net-abuse@chw.net.au was validated on 2026-03-17" ],
    "mnt_by" : [ "MAINT-AU-CHW" ],
    "date_updated" : "2026-03-17",
    "source" : "APNIC"
  },
  "organization" : {
    "handle" : "ORG-CHW1-AP",
    "name" : "Central Highlands Water",
    "type" : "LIR",
    "address" : [ "7 Learmonth Road", "Wendouree" ],
    "street" : "Learmonth Road",
    "country" : [ "AU" ],
    "email" : [ "helpdesk@chw.net.au" ],
    "phone" : [ "+61-3-53203134" ],
    "fax_no" : [ "+61-3-53203299" ],
    "mnt_ref" : [ "APNIC-HM" ],
    "mnt_by" : [ "APNIC-HM" ],
    "date_updated" : "2023-09-05",
    "source" : "APNIC"
  },
  "administrative_contacts" : [ {
    "handle" : "NA1105-AP",
    "name" : "Network Administrator",
    "address" : [ "7 Learmonth Road, Wendouree, Victoria 3355" ],
    "street" : "Learmonth Road",
    "state" : "VICTORIA",
    "zip_code" : "3355",
    "country" : "AU",
    "email" : [ "net-admin@chw.net.au" ],
    "phone" : [ "+61 3 5320 3106" ],
    "admin_contacts" : [ "YJG19-AP" ],
    "tech_contacts" : [ "YJG19-AP" ],
    "mnt_by" : [ "MAINT-CHW-IT" ],
    "date_updated" : "2024-09-04",
    "source" : "APNIC"
  } ],
  "technical_contacts" : [ {
    "handle" : "NA1105-AP",
    "name" : "Network Administrator",
    "address" : [ "7 Learmonth Road, Wendouree, Victoria 3355" ],
    "street" : "Learmonth Road",
    "state" : "VICTORIA",
    "zip_code" : "3355",
    "country" : "AU",
    "email" : [ "net-admin@chw.net.au" ],
    "phone" : [ "+61 3 5320 3106" ],
    "admin_contacts" : [ "YJG19-AP" ],
    "tech_contacts" : [ "YJG19-AP" ],
    "mnt_by" : [ "MAINT-CHW-IT" ],
    "date_updated" : "2024-09-04",
    "source" : "APNIC"
  } ],
  "abuse_contacts" : [ {
    "handle" : "AC1700-AP",
    "name" : "ABUSE CHWNONAU",
    "address" : [ "Central Highlands Water", "PO Box 152", "Ballarat", "VIC 3353" ],
    "city" : "Ballarat",
    "state" : "VIC",
    "zip_code" : "3353",
    "country" : "ZZ",
    "email" : [ "net-admin@chw.net.au" ],
    "abuse_mailbox" : [ "net-abuse@chw.net.au" ],
    "phone" : [ "+000000000" ],
    "admin_contacts" : [ "NA1105-AP" ],
    "tech_contacts" : [ "NA1105-AP" ],
    "remarks" : [ "Generated from irt object IRT-CHW-NON-AU", "net-admin@chw.net.au was validated on 2026-03-17", "net-abuse@chw.net.au was validated on 2026-03-17" ],
    "mnt_by" : [ "APNIC-ABUSE" ],
    "date_updated" : "2026-03-17",
    "source" : "APNIC"
  } ]
}

Peers

AS Number	Description	Country
AS2764	AAPT Limited	AU

Upstreams

AS Number	Description	Country
AS2764	AAPT Limited	AU

Contacts

Email Contacts

hostmaster@idnic.net net-admin@chw.net.au

Abuse Contacts

net-abuse@chw.net.au