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: SM6-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: 2025-10-07T13:30:20Z source: APNIC organisation: ORG-AAAR1-AP org-name: Australian Academic and Research Network org-type: LIR country: AU address: Building 9 address: Banks Street 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: 2023-09-05T02:14:44Z source: APNIC role: ABUSE AARNETAU country: ZZ address: AARNet Pty Ltd phone: +000000000 e-mail: abuse@aarnet.edu.au admin-c: SM6-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: 2025-10-07T13:30:49Z 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 |
|---|---|---|---|
| 203.21.24.0/21 | AS703 | Verizon Australia PTY Limited | 2,048 |
| 203.21.112.0/21 | AS133612 | VODAFONE AUSTRALIA PTY LIMITED | 2,048 |
| 203.21.108.0/22 | AS133612 | VODAFONE AUSTRALIA PTY LIMITED | 1,024 |
| 203.21.140.0/22 | AS135409 | Kacific Broadband Satellites Pte Ltd | 1,024 |
| 203.21.130.0/23 | AS10148 | The University of Melbourne | 512 |
| 203.21.128.0/23 | AS7545 | St. Vincent's Health & Aged Care Ltd. | 512 |
| 203.21.76.0/23 | AS38549 | Viewbank Rise Networks | 512 |
| 203.21.150.0/23 | AS137896 | Hunter Water Corporation | 512 |
| 203.21.42.0/23 | AS56118 | 47/111 Tiwanon Road | 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 |
| 203.21.15.0/24 | AS7545 | iVolve Pty Ltd | 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 |
| 203.21.120.0/24 | 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 |
| 203.21.65.0/24 | AS208185 | Phoenix Business Solutions Australia Pty Ltd | 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 |
|---|---|---|
| 203.21.37.3 |
0.56ms 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 |
|---|---|---|
| 154.247.85.184 |
12.81ms from Algiers,
DZ
|
|
| 71.120.132.152 |
8.78ms from Ashburn,
US
|
|
| 151.145.188.136 |
0.72ms from Ashburn,
US
|
|
| 136.113.53.88 |
0.13ms from Council Bluffs,
US
|
|
| 35.193.115.152 |
0.13ms from Council Bluffs,
US
|
|
| 14.254.247.200 |
0.91ms from Da Nang,
VN
|
|
| 41.82.159.88 |
2.33ms from Dakar,
SN
|
|
| 20.233.181.56 |
0.92ms from Dubai,
AE
|
|
| 212.224.81.8 |
0.47ms from Frankfurt am Main,
DE
|
|
| 151.240.9.40 |
1.59ms from Gravelines,
FR
|
|
| 109.110.254.72 |
6.36ms from Larnaca,
CY
|
|
| 176.26.143.40 |
1.59ms from London,
GB
|
|
| 116.72.136.136 |
4.10ms from Mumbai,
IN
|
|
| 67.248.211.184 |
12.62ms from New York City,
US
|
|
| 98.10.70.152 |
19.64ms from New York City,
US
|
|
| 154.202.4.40 |
1.03ms from New York City,
US
|
|
| 174.44.239.248 |
11.72ms from Secaucus,
US
|
|
| 14.39.14.88 |
1.28ms from Seoul,
KR
|
|
| 134.238.23.200 |
0.94ms from Singapore,
SG
|
|
| 126.122.140.152 |
9.40ms from Tokyo,
JP
|
|
| 85.127.94.104 |
4.78ms from Vienna,
AT
|
|
| 52.239.243.56 |
0.47ms from Amsterdam,
NL
|
|
| 67.172.58.88 |
10.07ms from Ashburn,
US
|
|
| 46.176.212.56 |
5.03ms from Athens,
GR
|
|
| 75.91.178.56 |
12.31ms from Atlanta,
US
|
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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