203.21.37.0/24
AS7575 · Australian Academic and Research Network (AARNet)
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| Country |
Australia
|
| Domain | aarnet.edu.au |
| ASN | AS7575 |
| Registry | APNIC |
| ID | AARNET |
WHOIS Details
inetnum: 203.21.37.0 - 203.21.37.255 netname: AARNET descr: Australian Academic and Research Network country: AU org: ORG-AAAR1-AP admin-c: ANOC-AP tech-c: ANOC-AP abuse-c: AA1638-AP status: ALLOCATED PORTABLE remarks: -------------------------------------------------------- remarks: To report network abuse, please contact mnt-irt remarks: For troubleshooting, please contact tech-c and admin-c remarks: Report invalid contact via www.apnic.net/invalidcontact remarks: -------------------------------------------------------- remarks: ** Conversion note - reference 'DH8766' changed to 'DH8766-AP' remarks: Record imported from AUNIC as part of AUNIC->APNIC migration remarks: Please see http://www.apnic.net/db/aunic/ remarks: -------------------------------------------------------- notify: irrcontact@aarnet.edu.au mnt-by: APNIC-HM mnt-lower: MAINT-AARNET-AP mnt-routes: MAINT-AARNET-AP mnt-irt: IRT-AARNET-AU last-modified: 2023-07-17T01:31:18Z 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 route: 203.21.37.0/24 origin: AS7575 descr: Australian Academic and Research Network Building 9 Banks Street mnt-by: MAINT-AARNET-AP last-modified: 2023-07-18T02:54:36Z 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 |
| 203.21.121.0/24 | AS7575 | Universities Australia | 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
Pingable IPs
4 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.
| IP Address | ASN | Details |
|---|---|---|
| 203.21.37.5 |
0.57ms 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 |
|---|---|---|
| 79.242.120.104 |
5.34ms from Berlin,
DE
|
|
| 93.122.211.104 |
19.05ms from Bucharest,
RO
|
|
| 1.26.75.248 |
10.16ms from Changchun,
CN
|
|
| 85.197.65.8 |
0.40ms from Frankfurt am Main,
DE
|
|
| 86.161.190.88 |
4.09ms from London,
GB
|
|
| 76.89.232.88 |
4.79ms from Los Angeles,
US
|
|
| 185.149.198.88 |
18.51ms from Moscow,
RU
|
|
| 114.188.106.72 |
5.40ms from Osaka,
JP
|
|
| 88.175.65.152 |
5.22ms from Paris,
FR
|
|
| 90.39.59.152 |
6.39ms from Paris,
FR
|
|
| 190.211.44.200 |
8.77ms from Santiago,
CL
|
|
| 114.33.176.232 |
3.64ms from Taichung,
TW
|
|
| 219.62.66.168 |
3.15ms from Tokyo,
JP
|
|
| 222.138.135.120 |
4.96ms from Zhengzhou,
CN
|
|
| 5.76.92.232 |
7.75ms from Astana,
KZ
|
|
| 105.68.142.120 |
4.42ms from Casablanca,
MA
|
|
| 154.46.174.136 |
17.60ms from Frosinone,
IT
|
|
| 116.104.225.200 |
3.57ms from Hanoi,
VN
|
|
| 95.58.93.184 |
4.62ms from Karagandy,
KZ
|
|
| 90.155.12.8 |
4.16ms from London,
GB
|
|
| 34.111.159.56 |
0.07ms from Melbourne,
AU
|
|
| 104.189.249.88 |
11.17ms from Miami,
US
|
|
| 79.41.131.24 |
1.91ms from Milan,
IT
|
|
| 5.36.215.184 |
2.48ms from Muscat,
OM
|
|
| 201.40.190.104 |
1.96ms from Novo Hamburgo,
BR
|
Traceroute
Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.
What are IP address ranges?
IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.
Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.
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