203.21.20.0/24

AS4739  ·  Internode Pty Ltd

Need more data or want to access it via API or data downloads? Sign up to get free access

Sign up for free ›

Summary

Country Australia
Domain iinet.net.au
ASN AS4739
Registry APNIC
ID IINET-AU

WHOIS Details

inetnum:        203.21.20.0 - 203.21.20.255
netname:        IINET-AU
descr:          iiNet Limited
country:        AU
org:            ORG-IL1-AP
admin-c:        NO20-AP
tech-c:         NO20-AP
abuse-c:        AI376-AP
status:         ASSIGNED PORTABLE
mnt-by:         APNIC-HM
mnt-routes:     MAINT-AU-IINET
mnt-routes:     MAINT-AU-WESTNET
mnt-irt:        IRT-IINET-AU
last-modified:  2020-06-03T13:04:04Z
source:         APNIC

irt:            IRT-IINET-AU
address:        iiNet Limited
address:        Level 9, 250 St Georges Tce
address:        Perth
address:        WA 6000
e-mail:         noc@staff.iinet.net.au
abuse-mailbox:  noc@staff.iinet.net.au
admin-c:        IH207-AP
tech-c:         IH207-AP
auth:           # Filtered
remarks:        noc@staff.iinet.net.au was validated on 2025-10-30
mnt-by:         MAINT-AU-IH207-AP
last-modified:  2025-10-30T06:56:09Z
source:         APNIC

organisation:   ORG-IL1-AP
org-name:       iiNet Limited
org-type:       LIR
country:        AU
address:        502 Hay St
phone:          +61-8-9214-2222
fax-no:         +61-8-9214-2211
e-mail:         noc@iinet.net.au
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:14:51Z
source:         APNIC

role:           ABUSE IINETAU
country:        ZZ
address:        iiNet Limited
address:        Level 9, 250 St Georges Tce
address:        Perth
address:        WA 6000
phone:          +000000000
e-mail:         noc@staff.iinet.net.au
admin-c:        IH207-AP
tech-c:         IH207-AP
nic-hdl:        AI376-AP
remarks:        Generated from irt object IRT-IINET-AU
remarks:        noc@staff.iinet.net.au was validated on 2025-10-30
abuse-mailbox:  noc@staff.iinet.net.au
mnt-by:         APNIC-ABUSE
last-modified:  2025-10-30T06:56:20Z
source:         APNIC

person:         Network Operations
nic-hdl:        NO20-AP
e-mail:         apnic-admin@staff.iinet.net.au
address:        iiNet Limited
address:        Level 1
address:        502 Hay Street
address:        Subiaco WA 6008
phone:          +61 8 9214 2222
fax-no:         +61 8 9214 2211
country:        AU
mnt-by:         MAINT-AU-IINET
last-modified:  2012-01-16T06:42:06Z
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
203.21.134.0/24 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

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

IP Address ASN Details
203.21.20.20 AS4739 Internode Pty Ltd 0.44ms from Perth, 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
60.26.153.184 AS4837 CHINA UNICOM China169 Backbone 5.44ms from Beijing, CN
41.34.164.184 AS8452 TE-AS 7.27ms from Cairo, EG
112.19.89.88 AS9808 China Mobile Communications Group Co., Ltd. 6.59ms from Chengdu, CN
71.72.216.24 AS10796 Charter Communications Inc 11.77ms from Columbus, US
202.191.122.8 AS24556 Bijoy Online Ltd. Multihome Internet Service Provider 0.22ms from Dhaka, BD
104.255.172.72 AS13768 Aptum Technologies 0.10ms from Los Angeles, US
61.46.161.200 AS9617 JCOM Co., Ltd. 7.94ms from Osaka, JP
80.74.75.104 AS34177 CELESTE SAS 7.02ms from Paris, FR
204.43.63.8 AS62600 Arizona Board of Regents 0.54ms from Phoenix, US
3.220.65.40 AS14618 Amazon.com, Inc. 0.18ms from Reston, US
46.109.237.216 AS12578 SIA Tet 1.11ms from Riga, LV
89.10.151.8 AS15659 NextGenTel AS 2.14ms from Sandefjord, NO
75.176.198.24 AS11426 Charter Communications Inc 6.95ms from Charlotte, US
170.94.231.8 AS21852 State Of Arkansas, Division of Information Systems 9.53ms from Dallas, US
82.29.249.248 AS51765 Oy Creanova Hosting Solutions Ltd. 0.18ms from Helsinki, FI
167.56.4.136 AS6057 Administracion Nacional de Telecomunicaciones 1.73ms from Montevideo, UY
142.167.105.184 AS855 Bell Canada 14.81ms from Montreal, CA
18.164.111.40 AS16509 Amazon.com, Inc. 0.08ms from New York City, US
95.190.190.248 AS12389 PJSC Rostelecom 6.96ms from Novosibirsk, RU
219.249.68.72 AS9318 SK Broadband Co Ltd 5.92ms from Seoul, KR
8.135.199.216 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 1.87ms from Shenzhen, CN
20.222.50.136 AS8075 Microsoft Corporation 0.17ms from Tokyo, JP
188.234.250.216 AS51604 JSC "ER-Telecom Holding" 0.80ms from Yekaterinburg, RU
73.132.190.88 AS7922 Comcast Cable Communications, LLC 6.83ms from Ashburn, US
92.47.164.200 AS9198 JSC Kazakhtelecom 4.69ms from Karagandy, KZ

Traceroute

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

$
traceroute -a -n -q1 -f3 203.21.20.20
traceroute to 203.21.20.20 (203.21.20.20): 64 hops max, 52 byte packets
3 [] 15.230.139.226 290.531 ms
4 [] 15.230.139.22 7.103 ms
5 *
6 *
7 [AS16509] 99.83.91.148 1.238 ms
8 *
11 [AS7545] 203.29.134.220 1.451 ms
12 [AS4739] 203.21.20.20 0.745 ms
Measurement taken from IPinfo ProbeNet in Perth, AU
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.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

IPinfo for all your IP geolocation needs

Our IP tools

Explore all tools
What is my IP

What is my IP

Test our data accuracy by viewing insights from your IP address.

See your IP address
Map IPs

Map IPs

Paste up to 500,000 IPs to see where they're located on a map.

Try Map IPs
Summarize IPs

Summarize IPs

Use our data visualization tool to create a visual overview of multiple IPs.

Try Summarize IPs