203.21.51.0/24

AS1221  ·  Telstra Limited

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Summary

Country Australia
Domain da.com.au
ASN AS1221
Registry APNIC
ID DATAACTION-AU

WHOIS Details

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:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        DHD1-AP
tech-c:         DHD1-AP
auth:           # Filtered
remarks:        [email protected] was validated on 2025-06-10
mnt-by:         MAINT-AU-DATAACTION
last-modified:  2025-11-18T00:27:21Z
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:         [email protected]
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:         [email protected]
admin-c:        DHD1-AP
tech-c:         DHD1-AP
nic-hdl:        AD788-AP
remarks:        Generated from irt object IRT-DATAACTION-NON-AU
remarks:        [email protected] was validated on 2025-06-10
abuse-mailbox:  [email protected]
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:         [email protected]
remarks:        any query please contact [email protected]
notify:         [email protected]
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
203.21.112.0/21 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
203.21.37.0/24 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

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.
Useful for Cybersecurity

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
76.215.138.200 AS7018 AT&T Enterprises, LLC 3.67ms from Atlanta, US
73.26.52.168 AS7922 Comcast Cable Communications, LLC 12.17ms from Denver, US
113.23.5.168 AS18403 FPT Telecom Company 9.41ms from Hanoi, VN
89.27.126.232 AS16086 DNA Oyj 8.80ms from Helsinki, FI
59.44.253.88 AS4134 CHINANET-BACKBONE 2.65ms from Liaoyang, CN
81.184.82.72 AS6739 VODAFONE ONO, S.A. 11.95ms from Madrid, ES
130.57.2.40 AS82 Attachmate Corp. 2.22ms from Salt Lake City, US
52.193.80.24 AS16509 Amazon.com, Inc. 0.32ms from Tokyo, JP
77.167.211.24 AS1136 KPN B.V. 7.13ms from Amsterdam, NL
186.147.149.72 AS10620 Telmex Colombia S.A. 15.97ms from Bogota, CO
84.192.254.104 AS6848 Telenet BV 8.64ms from Brussels, BE
139.208.154.248 AS4837 CHINA UNICOM China169 Backbone 10.81ms from Changchun, CN
162.205.196.136 AS7018 AT&T Enterprises, LLC 18.48ms from Chicago, US
135.220.125.104 AS8075 Microsoft Corporation 0.32ms from Frankfurt am Main, DE
73.179.64.88 AS7922 Comcast Cable Communications, LLC 7.16ms from Miami, US
125.112.86.136 AS4134 CHINANET-BACKBONE 7.92ms from Ningbo, CN
153.203.102.216 AS4713 NTT DOCOMO BUSINESS,Inc. 2.69ms from Osaka, JP
181.198.163.232 AS27947 Telconet S.A 1.85ms from Quito, EC
45.163.66.200 AS268554 CDM TELECOM 13.40ms from Sao Paulo, BR
121.125.152.136 AS9318 SK Broadband Co Ltd 1.90ms from Seoul, KR
221.225.171.72 AS140292 CHINATELECOM Jiangsu province Suzhou 5G network 7.75ms from Shanghai, CN
116.233.184.136 AS4812 China Telecom (Group) 4.00ms from Shanghai, CN
177.134.20.8 AS18881 TELEFÔNICA BRASIL S.A 2.31ms from São Paulo, BR
203.192.181.88 AS4637 Telstra Global 1.80ms from Taipei, TW
93.189.65.152 AS12347 Virtualtec Solutions AG 0.75ms from Zuerich, CH

Traceroute

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

$
traceroute -a -n -q1 -f2 -m14 203.21.51.1
traceroute to 203.21.51.1 (203.21.51.1): 14 hops max, 52 byte packets
3 *
5 [AS3257] 89.149.130.14 52.411 ms
6 *
7 [AS4637] 202.84.247.18 52.966 ms
8 [AS4637] 202.84.141.26 188.548 ms
9 *
10 *
11 [AS1221] 203.50.6.117 188.961 ms
12 *
13 *
14 *
Measurement taken from IPinfo ProbeNet in Kansas City, US
On

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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