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 [email protected]
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:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        OI3-AP
tech-c:         OI3-AP
auth:           # Filtered
remarks:        [email protected] was validated on 2025-06-18
mnt-by:         MAINT-AU-OPTUSINTERNET
last-modified:  2025-11-18T00:26:27Z
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:         [email protected]
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:         [email protected]
admin-c:        OI3-AP
tech-c:         OI3-AP
nic-hdl:        AO400-AP
remarks:        Generated from irt object IRT-OPTUSINTERNET-AU
remarks:        [email protected] was validated on 2025-06-18
abuse-mailbox:  [email protected]
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:         [email protected]
admin-c:        OI1-AP
tech-c:         OI1-AP
nic-hdl:        OI3-AP
notify:         [email protected]
mnt-by:         MAINT-AU-OPTUSINTERNET
remarks:        send spam/abuse reports to [email protected]
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
203.48.0.0/14	AS1221	Telstra Limited	262,144
203.36.0.0/14	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
203.177.0.0/16	AS24179	Globe Telecom	65,536
203.177.0.0/16	AS17894	Globe Telecom	65,536
203.151.0.0/16	AS56223	Internet Thailand Company Limited	65,536
203.219.0.0/16	AS7545	TPG Internet Pty Ltd.	65,536
203.155.0.0/16	AS55844	KSC Commercial Internet Co. Ltd.	65,536
203.227.0.0/16	AS9973	SEJONG NETWORKS	65,536
203.69.0.0/16	AS137280	Data Communication Business Group,	65,536
203.138.0.0/16	AS2514	NTT PC Communications,Inc.	65,536
203.108.0.0/16	AS703	OzEmail Pty Ltd	65,536
203.59.0.0/16	AS7545	iiNet Limited	65,536
203.177.0.0/16	AS4775	Globe Telecom	65,536
203.225.0.0/16	AS4766	KOLON BENIT	65,536
203.106.0.0/16	AS4788	TM TECHNOLOGY SERVICES SDN. BHD.	65,536
203.231.0.0/16	AS3608	SEJONG NETWORKS	65,536
203.231.0.0/16	AS23593	SEJONG NETWORKS	65,536
203.155.0.0/16	AS23644	KSC Commercial Internet Co. Ltd.	65,536
203.61.0.0/16	AS703	Verizon Australia PTY Limited	65,536
203.74.0.0/16	AS3462	Data Communication Business Group,	65,536
203.85.0.0/16	AS4058	CITIC Telecom International CPC Limited	65,536
203.231.0.0/16	AS9973	SEJONG NETWORKS	65,536
203.68.0.0/16	AS1659	Taiwan Academic Network	65,536
203.69.0.0/16	AS3462	Data Communication Business Group,	65,536
203.200.0.0/16	AS40009	Internet Service Provider	65,536
203.66.0.0/16	AS3462	Data Communication Business Group,	65,536
203.63.0.0/16	AS2764	AAPT Limited	65,536
203.151.0.0/16	AS4618	Internet Thailand Company Limited	65,536
203.177.0.0/16	AS24451	Globe Telecom	65,536
203.75.0.0/16	AS3462	Data Communication Business Group,	65,536
203.35.0.0/16	AS1221	Telstra Limited	65,536
203.218.0.0/16	AS4760	PCCW Limited	65,536
203.64.0.0/16	AS1659	Taiwan Academic Network	65,536
203.154.0.0/16	AS132063	Internet Thailand Company Limited	65,536
203.155.0.0/16	AS17478	KSC Commercial Internet Co. Ltd.	65,536
203.155.0.0/16	AS45197	KSC Commercial Internet Co. Ltd.	65,536
203.154.0.0/16	AS4618	Internet Thailand Company Limited	65,536
203.59.0.0/16	AS4802	iiNet Limited	65,536
203.54.0.0/16	AS1221	Telstra Limited	65,536
203.231.0.0/16	AS9684	SEJONG NETWORKS	65,536
203.231.0.0/16	AS131866	SEJONG NETWORKS	65,536
203.227.0.0/16	AS23584	SEJONG NETWORKS	65,536
203.157.0.0/16	AS9649	Ministry of Public Health, Thailand	65,536
203.67.0.0/16	AS4780	Digital United Inc.	65,536
203.151.0.0/16	AS133529	Internet Thailand Company Limited	65,536
203.155.0.0/16	AS135620	KSC Commercial Internet Co. Ltd.	65,536
203.162.0.0/16	AS7643	Vietnam Posts and Telecommunications Group	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
203.164.2.108	optusnet.org	1
203.164.8.247	luckygoldstar.com.au	1
203.164.14.88	ebalance.com.au	1
203.164.48.129	copytime.com.au	1
203.164.192.94	sphere-graphics.com	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

Read more

Pingable IPs

15,388 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
203.164.40.143	AS4804 Microplex PTY LTD	`33.10ms` from Adelaide, AU
203.164.20.177	AS4804 Microplex PTY LTD	`1.18ms` from Sydney, AU
203.164.36.228	AS4804 Microplex PTY LTD	`32.92ms` from Adelaide, AU
203.164.33.249	AS4804 Microplex PTY LTD	`33.14ms` from Adelaide, AU
203.164.41.195	AS4804 Microplex PTY LTD	`33.05ms` from Adelaide, AU
203.164.32.1	AS4804 Microplex PTY LTD	`32.61ms` from Adelaide, AU
203.164.39.179	AS4804 Microplex PTY LTD	`33.16ms` from Adelaide, AU
203.164.34.249	AS4804 Microplex PTY LTD	`33.04ms` from Adelaide, AU
203.164.42.186	AS4804 Microplex PTY LTD	`32.97ms` from Adelaide, AU
203.164.35.192	AS4804 Microplex PTY LTD	`32.95ms` from Adelaide, AU
203.164.38.114	AS4804 Microplex PTY LTD	`32.97ms` from Adelaide, AU
203.164.37.150	AS4804 Microplex PTY LTD	`32.98ms` from Adelaide, AU
203.164.44.168	AS4804 Microplex PTY LTD	`32.87ms` from Adelaide, AU
203.164.50.7	AS4804 Microplex PTY LTD	`32.95ms` from Adelaide, AU
203.164.164.230	AS4804 Microplex PTY LTD	`9.94ms` from Melbourne, AU
203.164.175.175	AS4804 Microplex PTY LTD	`9.88ms` from Melbourne, AU
203.164.112.63	AS4804 Microplex PTY LTD	`11.86ms` from Melbourne, AU
203.164.223.228	AS4804 Microplex PTY LTD	`1.25ms` from Sydney, AU
203.164.203.43	AS4804 Microplex PTY LTD	`1.25ms` from Sydney, AU
203.164.166.169	AS4804 Microplex PTY LTD	`9.92ms` from Melbourne, AU
203.164.115.248	AS4804 Microplex PTY LTD	`11.67ms` from Melbourne, AU
203.164.181.218	AS4804 Microplex PTY LTD	`9.72ms` from Melbourne, AU
203.164.209.114	AS4804 Microplex PTY LTD	`1.18ms` from Sydney, AU
203.164.126.38	AS4804 Microplex PTY LTD	`11.63ms` from Melbourne, AU
203.164.221.227	AS4804 Microplex PTY LTD	`1.19ms` 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
13.246.144.240	AS16509 Amazon.com, Inc.	`0.16ms` from Cape Town, ZA
197.145.150.96	AS36884 Wana Corporate	`7.84ms` from Casablanca, MA
147.154.193.64	AS31898 Oracle Corporation	`0.32ms` from Frankfurt am Main, DE
94.166.60.128	AS1267 WIND TRE S.P.A.	`13.26ms` from Frosinone, IT
178.142.125.208	AS9145 EWE TEL GmbH	`4.52ms` from Hamburg, DE
13.208.68.64	AS16509 Amazon.com, Inc.	`0.29ms` from Osaka, JP
14.13.77.64	AS2516 KDDI CORPORATION	`5.86ms` from Osaka, JP
93.20.160.0	AS15557 Societe Francaise Du Radiotelephone - SFR SA	`2.23ms` from Paris, FR
112.154.242.80	AS17858 LG POWERCOMM	`6.29ms` from Seoul, KR
110.42.181.160	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.38ms` from Shanghai, CN
51.162.148.32	AS15830 Equinix (EMEA) Acquisition Enterprises B.V.	`0.49ms` from Singapore, SG
140.119.53.176	AS1659 Taiwan Academic Network (TANet) Information Center	`2.93ms` from Taipei, TW
126.117.218.32	AS17676 SoftBank Corp.	`3.15ms` from Tokyo, JP
213.91.85.224	AS21107 # BLIC.NET AS peering info	`9.19ms` from Zagreb, HR
93.143.39.48	AS5391 Hrvatski Telekom d.d.	`6.84ms` from Zagreb, HR
114.240.44.240	AS4808 China Unicom Beijing Province Network	`4.65ms` from Beijing, CN
52.27.109.160	AS16509 Amazon.com, Inc.	`0.14ms` from Boardman, US
102.188.179.144	AS24835 Vodafone Data	`11.09ms` from Cairo, EG
99.80.60.144	AS16509 Amazon.com, Inc.	`0.13ms` from Dublin, IE
14.224.123.192	AS45899 VNPT Corp	`2.15ms` from Hanoi, VN
86.165.34.48	AS2856 British Telecommunications PLC	`4.74ms` from London, GB
83.45.135.160	AS3352 TELEFONICA DE ESPANA S.A.U.	`8.74ms` from Madrid, ES
170.246.16.96	AS264295 Unolink Telecom Ltda	`15.05ms` from Muriae, BR
153.200.84.16	AS4713 NTT DOCOMO BUSINESS,Inc.	`10.28ms` from Osaka, JP
4.233.211.0	AS8075 Microsoft Corporation	`0.91ms` from Paris, FR

Traceroute

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

traceroute -a -n -q1 -f3 203.164.233.212

traceroute to 203.164.233.212 (203.164.233.212): 64 hops max, 52 byte packets

3 [AS6421] 202.183.72.64 1.687 ms

4 *

5 *

6 *

7 *

8 [AS4804] 203.164.233.212 4.395 ms

Measurement taken from

IPinfo ProbeNet in Sydney, AU

On December 6th 2025

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