203.21.51.0/24
AS1221 · Telstra Limited
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inetnum: 203.21.48.0 - 203.21.63.255 netname: DATAACTION-AU descr: Data Action Pty Ltd descr: L3 55 Currie Street descr: Adelaide descr: SA 5000 country: AU org: ORG-DAPL1-AP admin-c: DHD1-AP tech-c: DHD1-AP abuse-c: AD788-AP status: ALLOCATED PORTABLE mnt-by: APNIC-HM mnt-lower: MAINT-AU-DATAACTION mnt-irt: IRT-DATAACTION-NON-AU mnt-routes: MAINT-AU-DATAACTION last-modified: 2020-10-12T03:23:51Z source: APNIC irt: IRT-DATAACTION-NON-AU address: Level 3 address: 55 Currie Street address: Adelaide address: SA 5000 e-mail: servicedesk@da.com.au abuse-mailbox: servicedesk@da.com.au admin-c: DHD1-AP tech-c: DHD1-AP auth: # Filtered remarks: servicedesk@da.com.au was validated on 2025-06-10 mnt-by: MAINT-AU-DATAACTION last-modified: 2025-09-04T05:27:33Z source: APNIC organisation: ORG-DAPL1-AP org-name: Data Action Pty Ltd org-type: LIR country: AU address: Level 3 , 55 Currie Street, phone: +618-8210-1099 fax-no: +618-8410-0175 e-mail: helpdesk@da.com.au mnt-ref: APNIC-HM mnt-by: APNIC-HM last-modified: 2023-09-05T02:15:11Z source: APNIC role: ABUSE DATAACTIONNONAU country: ZZ address: Level 3 address: 55 Currie Street address: Adelaide address: SA 5000 phone: +000000000 e-mail: servicedesk@da.com.au admin-c: DHD1-AP tech-c: DHD1-AP nic-hdl: AD788-AP remarks: Generated from irt object IRT-DATAACTION-NON-AU remarks: servicedesk@da.com.au was validated on 2025-06-10 abuse-mailbox: servicedesk@da.com.au mnt-by: APNIC-ABUSE last-modified: 2025-06-10T23:52:41Z source: APNIC role: DATAACTION HELP DESK address: Level 3 address: 55 Currie Street address: Adelaide address: SA 5000 country: AU phone: +61-8-8201 1400 admin-c: DHD1-AP tech-c: DHD1-AP nic-hdl: DHD1-AP mnt-by: MAINT-AU-DATAACTION e-mail: helpdesk@da.com.au remarks: any query please contact helpdesk@da.com.au notify: helpdesk@da.com.au last-modified: 2024-09-16T05:00:17Z 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 |
| 203.21.37.0/24 | 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 |
| 203.21.120.0/24 | 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
No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.
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 |
|---|---|---|
| 73.143.22.136 |
12.64ms from Boston,
US
|
|
| 64.49.121.120 |
4.89ms from Chicago,
US
|
|
| 79.207.110.8 |
4.42ms from Duesseldorf,
DE
|
|
| 65.62.202.200 |
0.14ms from Frankfurt am Main,
DE
|
|
| 178.198.131.72 |
0.63ms from Lausanne,
CH
|
|
| 92.207.212.88 |
3.21ms from London,
GB
|
|
| 76.20.97.216 |
7.74ms from Santa Clara,
US
|
|
| 220.118.169.152 |
0.93ms from Seoul,
KR
|
|
| 140.125.241.248 |
10.97ms from Taipei,
TW
|
|
| 126.208.91.184 |
3.20ms from Tokyo,
JP
|
|
| 95.160.128.136 |
9.71ms from Warsaw,
PL
|
|
| 158.94.131.136 |
1.57ms from Ashburn,
US
|
|
| 181.120.53.200 |
11.83ms from Asuncion,
PY
|
|
| 84.148.151.56 |
2.78ms from Berlin,
DE
|
|
| 58.104.38.184 |
3.52ms from Brisbane,
AU
|
|
| 86.124.145.24 |
6.69ms from Bucharest,
RO
|
|
| 41.234.167.152 |
6.31ms from Cairo,
EG
|
|
| 3.18.11.72 |
0.13ms from Columbus,
US
|
|
| 104.185.154.136 |
1.53ms from Dallas,
US
|
|
| 52.28.210.184 |
0.23ms from Frankfurt am Main,
DE
|
|
| 45.199.225.200 |
0.17ms from Frankfurt am Main,
DE
|
|
| 81.130.156.72 |
2.63ms from London,
GB
|
|
| 78.81.50.120 |
3.72ms from Saint Petersburg,
RU
|
|
| 166.88.113.232 |
0.47ms from San Jose,
US
|
|
| 27.124.206.152 |
6.01ms from Seoul,
KR
|
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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