ASN AS23719 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS23719?

AS23719 is listed under University of Sydney.

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.

AS23719 University of Sydney | IPGeolocation.io

ASN Lookup Tool

University of Sydney aarnet.edu.au

AU 2 Routes

AS Data

AS23719

AS23719 – University of Sydney

AS Number	23719
AS Name	USYD-AS-AP
Organization	University of Sydney(org-aaar1-ap)
Country	AU
Website	aarnet.edu.au
Number of IPv4 Routes	2
Number of IPv6 Routes	0
ASN type	EDUCATION
Registry	APNIC
Date Allocated	N/A

ASN Intelligence API for production workflows

Use ASN data for AS23719 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
203.32.106.0/24	AS23719	University of Sydney	University of Sydney	256
129.78.0.0/16	AS23719	University of Sydney	University of Sydney	65536

Raw Whois Response

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

% Information related to 'AS23552 - AS24575'

as-block:       AS23552 - AS24575
descr:          APNIC ASN block
remarks:        These AS numbers are further assigned by APNIC
remarks:        to APNIC members and end-users in the APNIC region
remarks:        AS23889 has been transfered to AfriNIC
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:        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 'AS23701 - AS23772'

as-block:       AS23701 - AS23772
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:        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 'AS23719'

% Abuse contact for 'AS23719' is 'abuse@aarnet.edu.au'

aut-num:        AS23719
as-name:        USYD-AS-AP
descr:          University of Sydney
country:        AU
import:         from AS7575 accept ANY
import:         from AS18062 accept ANY
export:         to AS7575 announce AS23719
export:         to AS18062 announce AS23719
org:            ORG-AAAR1-AP
admin-c:        NG31-AP
tech-c:         ANOC-AP
abuse-c:        AA1638-AP
mnt-lower:      MAINT-AARNET-AP
mnt-routes:     MAINT-AARNET-AP
mnt-by:         APNIC-HM
mnt-irt:        IRT-AARNET-AU
last-modified:  2020-06-22T05:22:12Z
source:         APNIC

irt:            IRT-AARNET-AU
address:        AARNet Pty Ltd
e-mail:         abuse@aarnet.edu.au
abuse-mailbox:  abuse@aarnet.edu.au
admin-c:        ANOC-AP
tech-c:         ANOC-AP
auth:           # Filtered
remarks:        abuse@aarnet.edu.au was validated on 2025-10-07
mnt-by:         MAINT-AARNET-AP
last-modified:  2026-01-30T04:42:26Z
source:         APNIC

organisation:   ORG-AAAR1-AP
org-name:       Australian Academic and Research Network
org-type:       LIR
country:        AU
address:        PO Box 5519
phone:          +61-2-6222-3530
fax-no:         +61-2-6222-3535
e-mail:         irrcontact@aarnet.edu.au
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2026-01-30T13:04:55Z
source:         APNIC

role:           ABUSE AARNETAU
country:        ZZ
address:        AARNet Pty Ltd
phone:          +000000000
e-mail:         abuse@aarnet.edu.au
admin-c:        ANOC-AP
tech-c:         ANOC-AP
nic-hdl:        AA1638-AP
remarks:        Generated from irt object IRT-AARNET-AU
remarks:        abuse@aarnet.edu.au was validated on 2025-10-07
abuse-mailbox:  abuse@aarnet.edu.au
mnt-by:         APNIC-ABUSE
last-modified:  2026-01-30T04:42:58Z
source:         APNIC

role:           AARNet Network Operations Centre
remarks:
remarks:
remarks:
remarks:        Send abuse reports to abuse@aarnet.edu.au
remarks:        Please include timestamps and offset to UTC in logs
remarks:        Peering requests to peering@aarnet.edu.au
remarks:
address:        AARNet Pty Ltd
address:        GPO Box 1559
address:        Canberra
address:        ACT  2601
country:        AU
phone:          +61 1300 275 662
phone:          +61 2 6222 3555
e-mail:         noc@aarnet.edu.au
admin-c:        ANOC-AP
tech-c:         ANOC-AP
nic-hdl:        ANOC-AP
mnt-by:         MAINT-AARNET-AP
last-modified:  2020-12-02T07:35:01Z
source:         APNIC

person:         Network Group
address:        University Computing Centre
address:        Building H08
address:        Sydney, NSW 2006
country:        AU
phone:          +61-2-9351-5140
fax-no:         +61-2-9351-5001
e-mail:         networkers@mail.usyd.edu.au
nic-hdl:        NG31-AP
remarks:        This object was transferred from ARIN database
remarks:        on 11 December 2002
mnt-by:         MAINT-AU-SYDNEYUNI
last-modified:  2008-09-04T07:29:23Z
source:         APNIC

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

Parsed Whois Response

Peers

AS Number	Description	Country
AS7575	Australian Academic and Research Network	AU
AS7575	Australian Academic and Research Network (AARNet)	AU
AS18062	Australian Academic and Research Network	AU