203.21.121.0/24

AS7575  ·  Australian Academic and Research Network (AARNet)

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Summary

Country Australia
Domain universitiesaustralia.edu.au
ASN AS7575
Registry APNIC
ID UNIAUS-AU

WHOIS Details

inetnum:        203.21.121.0 - 203.21.121.255
netname:        UNIAUS-AU
descr:          Universities Australia
descr:          1-5 Geils Court
descr:          Deakin
descr:          ACT 2601
country:        AU
org:            ORG-UA7-AP
admin-c:        UANA1-AP
tech-c:         UANA1-AP
abuse-c:        AU241-AP
status:         ASSIGNED PORTABLE
mnt-by:         APNIC-HM
mnt-routes:     MAINT-AU-UNIVERSITIESAUSTRALIA
mnt-irt:        IRT-UNIVERSITIESAUSTRALIA-AU
last-modified:  2020-11-25T13:04:31Z
source:         APNIC

irt:            IRT-UNIVERSITIESAUSTRALIA-AU
address:        1-5 Geils Court
address:        Deakin
address:        ACT 2601
address:        Australia
phone:          +61 2 6285 8117
e-mail:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        UANA1-AP
tech-c:         UANA1-AP
remarks:        [email protected] was validated on 2025-10-02
irt-nfy:        [email protected]
auth:           # Filtered
mnt-by:         MAINT-AU-UNIVERSITIESAUSTRALIA
last-modified:  2025-11-18T00:27:58Z
source:         APNIC

organisation:   ORG-UA7-AP
org-name:       Universities Australia
org-type:       LIR
country:        AU
address:        1 Geils Court
phone:          +61-2-6285-8100
e-mail:         [email protected]
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:15:06Z
source:         APNIC

role:           ABUSE UNIVERSITIESAUSTRALIAAU
country:        ZZ
address:        1-5 Geils Court
address:        Deakin
address:        ACT 2601
address:        Australia
phone:          +61 2 6285 8117
e-mail:         [email protected]
admin-c:        UANA1-AP
tech-c:         UANA1-AP
nic-hdl:        AU241-AP
remarks:        Generated from irt object IRT-UNIVERSITIESAUSTRALIA-AU
remarks:        [email protected] was validated on 2025-10-02
abuse-mailbox:  [email protected]
mnt-by:         APNIC-ABUSE
last-modified:  2025-10-02T23:26:32Z
source:         APNIC

role:           Universities Australia - Network Administrator
address:        1 Geils Court, Deakin, ACT,
country:        AU
phone:          +61262858117
e-mail:         [email protected]
admin-c:        UANA1-AP
tech-c:         UANA1-AP
nic-hdl:        UANA1-AP
mnt-by:         MAINT-AU-UNIVERSITIESAUSTRALIA
last-modified:  2013-01-21T06:30:27Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 203.21.0.0/16

Range ASN Company Num of IPs
203.21.112.0/21 AS133612 VODAFONE AUSTRALIA PTY LIMITED 2,048
203.21.24.0/21 AS703 Verizon Australia PTY Limited 2,048
203.21.140.0/22 AS135409 Kacific Broadband Satellites Pte Ltd 1,024
203.21.108.0/22 AS133612 VODAFONE AUSTRALIA PTY LIMITED 1,024
203.21.150.0/23 AS137896 Hunter Water Corporation 512
203.21.128.0/23 AS2764 St. Vincent's Health & Aged Care Ltd. 512
203.21.130.0/23 AS10148 The University of Melbourne 512
203.21.42.0/23 AS56118 47/111 Tiwanon Road 512
203.21.76.0/23 AS38549 Viewbank Rise Networks 512
203.21.66.0/24 AS209854 Cyberzone S.A. 256
203.21.4.0/24 AS216053 Data Cloud Technology d.o.o Kragujevac 256
203.21.7.0/24 AS24448 Synamedia Technologies (India) Private Limited 256
203.21.79.0/24 AS2764 First Linear 256
203.21.72.0/24 AS395793 Mistic Internet Security Pty Ltd 256
203.21.125.0/24 AS45671 MailGuard Pty. Ltd. 256
203.21.20.0/24 AS4739 iiNet Limited 256
203.21.134.0/24 AS58716 Penrith City Council 256
203.21.5.0/24 AS7545 Micronica 256
203.21.78.0/24 AS7545 iiNet Limited 256
203.21.37.0/24 AS7575 Australian Academic and Research Network 256
203.21.83.0/24 AS7647 OnTheNet Pty Ltd 256
203.21.95.0/24 AS9009 Formosa Sydney Pty Limited 256
203.21.22.0/24 AS9266 Fiveways International Limited 256
203.21.207.0/24 AS10143 Infinet Group Pty Ltd 256
203.21.12.0/24 AS9650 CITEC 256
203.21.9.0/24 AS10143 OCTEC Incorporated 256
203.21.40.0/24 AS133015 City of Stirling 256
203.21.140.0/24 AS135409 Western Samoa Pool 256
203.21.65.0/24 AS154329 Phoenix Business Solutions Australia Pty Ltd 256
203.21.120.0/24 AS17882 Univision LLC 256
203.21.21.0/24 AS17889 Intraceptives Pty Ltd 256
203.21.104.0/24 AS18986 Calligo (Canada) Inc. 256
203.21.47.0/24 AS18986 Calligo (Canada) Inc. 256

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

Pingable IPs

2 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
203.21.121.42 AS7575 Australian Academic and Research Network (AARNet) 4.30ms from Sydney, AU

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address ASN Details
75.248.31.40 AS6167 Verizon Business 15.75ms from Atlanta, US
198.1.108.152 AS46606 Unified Layer 2.07ms from Draper, US
115.132.84.8 AS4788 TM TECHNOLOGY SERVICES SDN. BHD. 6.89ms from Kuala Lumpur, MY
39.45.162.88 AS17557 Pakistan Telecommunication Company Limited 8.16ms from Lahore, PK
116.139.21.168 AS4837 CHINA UNICOM China169 Backbone 13.16ms from Liaoyang, CN
175.169.170.200 AS4837 CHINA UNICOM China169 Backbone 13.57ms from Liaoyang, CN
188.28.119.24 AS206067 Hutchison 3G UK Limited 8.83ms from London, GB
97.182.135.40 AS6167 Verizon Business 14.72ms from Los Angeles, US
13.203.95.168 AS16509 Amazon.com, Inc. 0.30ms from Mumbai, IN
85.71.139.104 AS5610 O2 Czech Republic, a.s. 8.05ms from Prague, CZ
68.198.98.200 AS6128 Cablevision Systems Corp. 10.16ms from Secaucus, US
213.91.83.72 AS21107 # BLIC.NET AS peering info 9.11ms from Zagreb, HR
182.122.91.104 AS4837 CHINA UNICOM China169 Backbone 5.90ms from Zhengzhou, CN
212.124.100.248 AS47328 DigitalOne AG 0.14ms from Ashburn, US
27.191.77.184 AS4134 CHINANET-BACKBONE 13.95ms from Beijing, CN
84.141.99.40 AS3320 Deutsche Telekom AG 4.33ms from Berlin, DE
62.217.247.168 AS8953 Orange Romania S.A. 0.71ms from Bucharest, RO
93.117.130.24 AS8926 Moldtelecom SA 2.19ms from Chisinau, MD
5.30.195.24 AS15802 Emirates Integrated Telecommunications Company PJSC 3.08ms from Dubai, AE
81.153.41.104 AS2856 British Telecommunications PLC 7.34ms from Erith, GB
90.207.26.56 AS5607 Sky UK Limited 5.33ms from Erith, GB
97.115.177.200 AS209 CenturyLink Communications, LLC 1.05ms from Hillsboro, US
178.81.231.104 AS35819 Etihad Etisalat, a joint stock company 4.29ms from Manama, BH
68.115.96.200 AS20115 Charter Communications LLC 9.82ms from Minneapolis, US
197.232.102.88 AS36866 Jamii Telecommunications Limited 1.88ms from Nairobi, KE

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

$
traceroute -a -n -q1 -f2 203.21.121.26
traceroute to 203.21.121.26 (203.21.121.26): 64 hops max, 52 byte packets
2 [AS7578] 103.137.13.4 0.256 ms
3 [AS7578] 206.148.24.2 0.141 ms
4 [] 218.100.52.7 0.3 ms
5 [AS7575] 113.197.15.11 3.925 ms
6 *
7 [AS7575] 203.21.121.26 4.614 ms
Measurement taken from IPinfo ProbeNet in Sydney, AU
On

What are IP address ranges?

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