203.164.0.0/16

AS4804 · Microplex PTY LTD

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Summary

Country	Australia
Domain	optus.net.au
ASN	AS4804
Registry	APNIC
ID	OPTUSINTERNET-AU

WHOIS Details

inetnum:        203.164.96.0 - 203.164.255.255
netname:        OPTUSINTERNET-AU
descr:          @Home Network Australia
descr:          @Home Network Australia intial HE and
descr:          Infrastructure allocations
country:        AU
org:            ORG-OIPL5-AP
admin-c:        OI3-AP
tech-c:         OI3-AP
abuse-c:        AO400-AP
status:         ALLOCATED PORTABLE
remarks:        For abuse issues, please email abuse@optushome.com.au
mnt-by:         APNIC-HM
mnt-lower:      MAINT-AU-OPTUSINTERNET
mnt-irt:        IRT-OPTUSINTERNET-AU
last-modified:  2021-01-15T01:45:07Z
source:         APNIC

irt:            IRT-OPTUSINTERNET-AU
address:        1 Lyonpark Rd.
address:        Macquarie Park, NSW 2113
e-mail:         abuse@optusnet.com.au
abuse-mailbox:  abuse@optusnet.com.au
admin-c:        OI3-AP
tech-c:         OI3-AP
auth:           # Filtered
remarks:        abuse@optusnet.com.au was validated on 2025-06-18
mnt-by:         MAINT-AU-OPTUSINTERNET
last-modified:  2025-10-08T04:42:39Z
source:         APNIC

organisation:   ORG-OIPL5-AP
org-name:       Optus Internet Pty Ltd
org-type:       LIR
country:        AU
address:        Building F, 3rd Floor
address:        1 Lyonpark Road
phone:          +61-2-8087-0020
fax-no:         +61-2-8085-5108
e-mail:         abuse@optusnet.com.au
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:14:50Z
source:         APNIC

role:           ABUSE OPTUSINTERNETAU
country:        ZZ
address:        1 Lyonpark Rd.
address:        Macquarie Park, NSW 2113
phone:          +000000000
e-mail:         abuse@optusnet.com.au
admin-c:        OI3-AP
tech-c:         OI3-AP
nic-hdl:        AO400-AP
remarks:        Generated from irt object IRT-OPTUSINTERNET-AU
remarks:        abuse@optusnet.com.au was validated on 2025-06-18
abuse-mailbox:  abuse@optusnet.com.au
mnt-by:         APNIC-ABUSE
last-modified:  2025-06-18T01:06:46Z
source:         APNIC

role:           Optus Internet
address:        1 Lyonpark Rd.
address:        Macquarie Park, NSW 2113
country:        AU
phone:          +61-2-8082 7800
fax-no:         +61-2-8082 7100
e-mail:         ipadmin@optus.net.au
admin-c:        OI1-AP
tech-c:         OI1-AP
nic-hdl:        OI3-AP
notify:         ipadmin@optus.net.au
mnt-by:         MAINT-AU-OPTUSINTERNET
remarks:        send spam/abuse reports to abuse@optusnet.com.au
remarks:        please use http://wq.apnic.net/apnic-bin/whois.pl
remarks:        to identify networks before sending reports and
remarks:        always include full headers/logs.
last-modified:  2021-09-07T23:35:56Z
source:         APNIC

route:          203.164.0.0/16
descr:          Route object for 203.164.0.0/16
country:        AU
origin:         AS4804
mnt-lower:      MAINT-AU-OPTUSINTERNET
mnt-routes:     MAINT-AU-OPTUSINTERNET
mnt-by:         MAINT-AU-OPTUSINTERNET
last-modified:  2025-07-18T01:44:57Z
source:         APNIC

Overlapping Ranges

BGP prefixes that are contained by 203.164.0.0/16

Range	ASN	Company	Num of IPs
203.164.160.0/19	AS4804	OPTUS INTERNET - RETAIL	8,192
203.164.32.0/19	AS4804	OPTUS INTERNET - RETAIL	8,192

Nearby Ranges

BGP prefixes that overlap with 203.0.0.0/8

Range	ASN	Company	Num of IPs
203.40.0.0/13	AS1221	Telstra Limited	524,288
203.36.0.0/14	AS1221	Telstra Limited	262,144
203.48.0.0/14	AS1221	Telstra Limited	262,144
203.102.0.0/15	AS703	Verizon Australia PTY Limited	131,072
203.52.0.0/15	AS1221	Telstra Limited	131,072
203.206.0.0/16	AS7545	iiNet Limited	65,536
203.162.0.0/16	AS45899	Vietnam Posts and Telecommunications Group	65,536
203.74.0.0/16	AS131660	Data Communication Business Group,	65,536
203.59.0.0/16	AS7545	iiNet Limited	65,536
203.108.0.0/16	AS703	OzEmail Pty Ltd	65,536
203.200.0.0/16	AS40009	Internet Service Provider	65,536
203.157.0.0/16	AS9649	Ministry of Public Health, Thailand	65,536
203.231.0.0/16	AS131866	SEJONG NETWORKS	65,536
203.85.0.0/16	AS4058	CITIC Telecom International CPC Limited	65,536
203.162.0.0/16	AS7643	Vietnam Posts and Telecommunications Group	65,536
203.225.0.0/16	AS4766	KOLON BENIT	65,536
203.59.0.0/16	AS4739	iiNet Limited	65,536
203.177.0.0/16	AS4775	Globe Telecom	65,536
203.59.0.0/16	AS4802	iiNet Limited	65,536
203.155.0.0/16	AS55844	KSC Commercial Internet Co. Ltd.	65,536
203.61.0.0/16	AS703	Verizon Australia PTY Limited	65,536
203.219.0.0/16	AS7545	TPG Internet Pty Ltd.	65,536
203.35.0.0/16	AS1221	Telstra Limited	65,536
203.69.0.0/16	AS137280	Data Communication Business Group,	65,536
203.182.0.0/16	AS4673	NTT DATA CORPORATION	65,536
203.66.0.0/16	AS3462	Data Communication Business Group,	65,536
203.227.0.0/16	AS23584	SEJONG NETWORKS	65,536
203.154.0.0/16	AS132063	Internet Thailand Company Limited	65,536
203.177.0.0/16	AS132595	Globe Telecom	65,536
203.155.0.0/16	AS17478	KSC Commercial Internet Co. Ltd.	65,536
203.75.0.0/16	AS3462	Data Communication Business Group,	65,536
203.206.0.0/16	AS4739	iiNet Limited	65,536
203.106.0.0/16	AS4788	TM TECHNOLOGY SERVICES SDN. BHD.	65,536
203.54.0.0/16	AS1221	Telstra Limited	65,536
203.155.0.0/16	AS23644	KSC Commercial Internet Co. Ltd.	65,536
203.74.0.0/16	AS3462	Data Communication Business Group,	65,536
203.227.0.0/16	AS17592	SEJONG NETWORKS	65,536
203.69.0.0/16	AS3462	Data Communication Business Group,	65,536
203.231.0.0/16	AS23593	SEJONG NETWORKS	65,536
203.151.0.0/16	AS133529	Internet Thailand Company Limited	65,536
203.227.0.0/16	AS9319	SEJONG NETWORKS	65,536
203.108.0.0/16	AS12234	OzEmail Pty Ltd	65,536
203.125.0.0/16	AS3758	SingNet Pte Ltd	65,536
203.231.0.0/16	AS9973	SEJONG NETWORKS	65,536
203.177.0.0/16	AS24451	Globe Telecom	65,536
203.73.0.0/16	AS4780	Digital United Inc.	65,536
203.227.0.0/16	AS9973	SEJONG NETWORKS	65,536
203.180.0.0/16	AS2497	Internet Initiative Japan Inc.	65,536
203.155.0.0/16	AS135620	KSC Commercial Internet Co. Ltd.	65,536
203.151.0.0/16	AS4618	Internet Thailand Company Limited	65,536

Hosted domains

There are 9 domain names hosted across 9 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
203.164.14.88	ebalance.com.au	1
203.164.2.108	optusnet.org	1
203.164.169.119	vidana.com.au	1
203.164.160.44	yodobashimembers.top	1
203.164.195.189	balanceandco.com.au	1
203.164.8.247	luckygoldstar.com.au	1

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

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Pingable IPs

15,014 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
203.164.44.168	AS4804 Microplex PTY LTD	`33.25ms` from Adelaide, AU
203.164.114.161	AS4804 Microplex PTY LTD	`11.85ms` from Melbourne, AU
203.164.162.99	AS4804 Microplex PTY LTD	`9.87ms` from Melbourne, AU
203.164.122.11	AS4804 Microplex PTY LTD	`11.61ms` from Melbourne, AU
203.164.179.68	AS4804 Microplex PTY LTD	`9.81ms` from Melbourne, AU
203.164.214.31	AS4804 Microplex PTY LTD	`1.17ms` from Sydney, AU
203.164.194.81	AS4804 Microplex PTY LTD	`1.03ms` from Sydney, AU
203.164.205.164	AS4804 Microplex PTY LTD	`1.12ms` from Sydney, AU
203.164.48.177	AS4804 Microplex PTY LTD	`32.98ms` from Adelaide, AU
203.164.124.252	AS4804 Microplex PTY LTD	`11.64ms` from Melbourne, AU
203.164.198.76	AS4804 Microplex PTY LTD	`1.13ms` from Sydney, AU
203.164.197.204	AS4804 Microplex PTY LTD	`1.19ms` from Sydney, AU
203.164.216.4	AS4804 Microplex PTY LTD	`1.17ms` from Sydney, AU
203.164.175.248	AS4804 Microplex PTY LTD	`9.74ms` from Melbourne, AU
203.164.187.46	AS4804 Microplex PTY LTD	`9.81ms` from Melbourne, AU
203.164.211.98	AS4804 Microplex PTY LTD	`1.08ms` from Sydney, AU
203.164.55.101	AS4804 Microplex PTY LTD	`33.33ms` from Adelaide, AU
203.164.39.171	AS4804 Microplex PTY LTD	`33.19ms` from Adelaide, AU
203.164.58.120	AS4804 Microplex PTY LTD	`33.24ms` from Adelaide, AU
203.164.186.108	AS4804 Microplex PTY LTD	`9.70ms` from Melbourne, AU
203.164.103.93	AS4804 Microplex PTY LTD	`11.82ms` from Melbourne, AU
203.164.227.205	AS4804 Microplex PTY LTD	`1.12ms` from Sydney, AU
203.164.209.68	AS4804 Microplex PTY LTD	`1.09ms` from Sydney, AU
203.164.234.215	AS4804 Microplex PTY LTD	`1.11ms` from Sydney, AU
203.164.246.25	AS4804 Microplex PTY LTD	`1.10ms` 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
86.83.49.160	AS1136 KPN B.V.	`2.49ms` from Amsterdam, NL
173.75.35.240	AS701 Verizon Business	`6.38ms` from Ashburn, US
141.54.181.32	AS680 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.	`8.51ms` from Berlin, DE
212.37.70.224	AS31117 ENERGOTEL a.s.	`3.03ms` from Bratislava, SK
60.15.65.128	AS4837 CHINA UNICOM China169 Backbone	`14.43ms` from Changchun, CN
36.139.208.240	AS9808 China Mobile Communications Group Co., Ltd.	`0.55ms` from Chongqing, CN
3.248.227.80	AS16509 Amazon.com, Inc.	`0.54ms` from Dublin, IE
20.107.180.16	AS8075 Microsoft Corporation	`0.38ms` from Dublin, IE
18.195.169.96	AS16509 Amazon.com, Inc.	`0.52ms` from Frankfurt am Main, DE
121.196.56.240	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`2.16ms` from Hangzhou, CN
81.156.96.80	AS2856 British Telecommunications PLC	`11.32ms` from London, GB
94.10.113.176	AS5607 Sky UK Limited	`6.28ms` from London, GB
2.126.120.80	AS5607 Sky UK Limited	`3.81ms` from London, GB
81.18.189.240	AS39180 LASOTEL SAS	`1.58ms` from Lyon, FR
195.39.194.80	AS60798 Servereasy Srl	`0.12ms` from Milan, IT
93.170.236.144	AS50685 United Networks Ltd.	`13.41ms` from Minsk, BY
218.40.110.80	AS17958 Kasaoka Cable Vision Co,LTD.	`6.78ms` from Osaka, JP
78.202.45.128	AS12322 Free SAS	`1.31ms` from Paris, FR
70.37.89.32	AS8075 Microsoft Corporation	`0.21ms` from San Antonio, US
182.220.84.32	AS17858 LG POWERCOMM	`2.73ms` from Seoul, KR
222.120.64.112	AS4766 Korea Telecom	`1.73ms` from Seoul, KR
58.227.29.144	AS9318 SK Broadband Co Ltd	`6.98ms` from Seoul, KR
171.127.178.192	AS4837 CHINA UNICOM China169 Backbone	`6.52ms` from Taiyuan, CN
2.50.6.0	AS5384 Emirates Internet	`2.45ms` from Al Fujairah City, AE
31.38.151.48	AS5410 Bouygues Telecom SA	`3.44ms` from Aubervilliers, FR

Traceroute

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

traceroute -a -n -q1 -m5 203.164.8.205

traceroute to 203.164.8.205 (203.164.8.205): 5 hops max, 52 byte packets

1 [AS15169] 142.251.228.106 230.399 ms

2 [AS15169] 192.178.97.214 230.666 ms

3 *

4 *

5 *

Measurement taken from

IPinfo ProbeNet in Columbus, US

On October 30th 2025

What are IP address ranges?

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