203.2.75.0/24

AS4804 · Microplex PTY LTD

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Summary

Country	Australia
Domain	optus.com.au
ASN	AS4804
Registry	APNIC
ID	OPTUSCOM-AU

WHOIS Details

inetnum:        203.2.75.0 - 203.2.75.255
netname:        OPTUSCOM-AU
descr:          SingTel Optus Pty Ltd
country:        AU
org:            ORG-SOPL2-AP
admin-c:        OA3-AP
tech-c:         OA3-AP
abuse-c:        AO399-AP
status:         ASSIGNED PORTABLE
remarks:        --------------------------------------------------------
remarks:        To report network abuse, please contact mnt-irt
remarks:        For troubleshooting, please contact tech-c and admin-c
remarks:        Report invalid contact via www.apnic.net/invalidcontact
remarks:        --------------------------------------------------------
mnt-by:         APNIC-HM
mnt-routes:     MAINT-OPTUSCOM-AP
mnt-irt:        IRT-OPTUSCOM-AU
last-modified:  2023-05-04T05:37:31Z
source:         APNIC

irt:            IRT-OPTUSCOM-AU
address:        SingTel Optus Pty Ltd
address:        Optus Macquarie Park (OCS)
address:        1 Lyonpark Road
address:        Macquarie Park NSW 2113
e-mail:         abuse@optusnet.com.au
abuse-mailbox:  abuse@optusnet.com.au
admin-c:        OA3-AP
tech-c:         OA3-AP
auth:           # Filtered
remarks:        abuse@optusnet.com.au was validated on 2025-06-18
mnt-by:         MAINT-OPTUSCOM-AP
last-modified:  2025-10-08T04:42:36Z
source:         APNIC

organisation:   ORG-SOPL2-AP
org-name:       SingTel Optus Pty Ltd
org-type:       LIR
country:        AU
address:        Optus Macquarie Park (OCS)
address:        1 Lyonpark Road, Macquarie Park
phone:          +61-2-8082-7800
fax-no:         +61-2-8082-7100
e-mail:         irr-admin@optus.com.au
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2025-09-25T13:05:45Z
source:         APNIC

role:           ABUSE OPTUSCOMAU
country:        ZZ
address:        SingTel Optus Pty Ltd
address:        Optus Macquarie Park (OCS)
address:        1 Lyonpark Road
address:        Macquarie Park NSW 2113
phone:          +000000000
e-mail:         abuse@optusnet.com.au
admin-c:        OA3-AP
tech-c:         OA3-AP
nic-hdl:        AO399-AP
remarks:        Generated from irt object IRT-OPTUSCOM-AU
remarks:        abuse@optusnet.com.au was validated on 2025-06-18
abuse-mailbox:  abuse@optusnet.com.au
mnt-by:         APNIC-ABUSE
last-modified:  2025-06-18T01:06:45Z
source:         APNIC

role:           OPTUS IP ADMINISTRATORS
address:        SingTel Optus Pty Ltd
address:        Optus Macquarie Park (OCS)
address:        1 Lyonpark Road
address:        Macquarie Park  NSW 2113
address:        AUSTRALIA
country:        AU
phone:          +61 2 8082 7800
fax-no:         +61 2 8082 7100
e-mail:         ipadmin@optus.net.au
remarks:        send spam/abuse reports to abuse@optus.net.au
remarks:        please use http://www.apnic.net/db/spam.html
remarks:        to identify networks before sending reports and
remarks:        always include full headers/logs.
admin-c:        NC8-AP
admin-c:        IA65-AP
tech-c:         NC8-AP
tech-c:         IA65-AP
tech-c:         OH23-AP
nic-hdl:        OA3-AP
notify:         hostmaster@optus.net.au
mnt-by:         MAINT-OPTUSCOM-AP
last-modified:  2011-12-06T00:10:13Z
source:         APNIC

route:          203.2.75.0/24
origin:         AS4804
descr:          SingTel Optus Pty Ltd Optus Macquarie Park (OCS) Building A, Level 2 1 Lyonpark Road, Macquarie Park
mnt-by:         MAINT-OPTUSCOM-AP
last-modified:  2025-05-14T01:00:17Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 203.2.0.0/16

Range	ASN	Company	Num of IPs
203.2.0.0/19	AS138180	Ernst & Young Services Pty Ltd	8,192
203.2.240.0/20	AS132029	Australian Maritime Safety Authority	4,096
203.2.80.0/20	AS7474	The Royal Melbourne Hospital	4,096
203.2.160.0/21	AS134768	CHINANET Guangdong province network	2,048
203.2.192.0/22	AS703	Verizon Australia Pty Limited	1,024
203.2.130.0/23	AS135409	Kacific Broadband Satellites Pte Ltd	512
203.2.182.0/23	AS55924	Aristocrat Technologies Australia Pty Limited	512
203.2.120.0/23	AS9555	Australian Institute of Health and Welfare	512
203.2.125.0/24	AS32787	Tab Limited (ACN 081 765 308)	256
203.2.124.0/24	AS4739	iiNet Limited	256
203.2.134.0/24	AS4739	iiNet Limited	256
203.2.133.0/24	AS7474	The Australian Council for Educational Research Limited	256
203.2.231.0/24	AS7474	Hastings Deering Australia Limited	256
203.2.199.0/24	AS7545	Stephen Davies Consulting Pty Ltd	256
203.2.217.0/24	AS9268	B & R Enclosures Pty Ltd	256
203.2.218.0/24	AS9342	Australian Broadcasting Commission	256
203.2.216.0/24	AS10221	Qvalent Pty Ltd	256
203.2.208.0/24	AS9555	Verizon Australia PTY Limited	256
203.2.228.0/24	AS1221	Telstra Limited	256
203.2.224.0/24	AS134555	Kingston City Council	256
203.2.151.0/24	AS142043	PT BARAYA BARENG SADULUR	256
203.2.123.0/24	AS152695	Premium Floors Australia Pty Ltd	256
203.2.198.0/24	AS16509	Mindful	256
203.2.144.0/24	AS23646	Melbourne Web Experts	256
203.2.122.0/24	AS24446	5G NETWORK OPERATIONS PTY LTD	256

Hosted domains

There is 1 domain name hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
203.2.75.7	waratah.id.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

Read more

Pingable IPs

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

IP Address	ASN	Details
203.2.75.2	AS4804 Microplex PTY LTD	`0.32ms` 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
221.216.57.40	AS4808 China Unicom Beijing Province Network	`4.10ms` from Beijing, CN
76.24.171.88	AS7922 Comcast Cable Communications, LLC	`6.78ms` from Boston, US
75.156.1.72	AS852 TELUS Communications Inc.	`8.15ms` from Kelowna, CA
5.64.57.168	AS5607 Sky UK Limited	`1.72ms` from London, GB
13.33.229.24	AS16509 Amazon.com, Inc.	`0.34ms` from Los Angeles, US
189.144.211.120	AS8151 UNINET	`1.10ms` from Mexico City, MX
109.174.59.232	AS30922 MTS PJSC	`1.51ms` from Novosibirsk, RU
179.130.249.56	AS26599 TELEFÔNICA BRASIL S.A	`7.17ms` from Osasco, BR
95.230.102.232	AS3269 Telecom Italia S.p.A.	`2.06ms` from Rome, IT
126.66.80.72	AS17676 SoftBank Corp.	`4.98ms` from Tokyo, JP
221.171.249.8	AS2518 BIGLOBE Inc.	`1.68ms` from Tokyo, JP
98.20.106.120	AS7029 Windstream Communications LLC	`6.17ms` from Atlanta, US
46.136.1.56	AS12430 VODAFONE ESPANA S.A.U.	`9.22ms` from Barcelona, ES
181.234.53.56	AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC	`8.86ms` from Bogota, CO
191.83.224.56	AS22927 Telefonica de Argentina	`1.95ms` from Buenos Aires, AR
172.73.194.200	AS11426 Charter Communications Inc	`10.43ms` from Charlotte, US
106.196.98.104	AS45609 Bharti Airtel Ltd. AS for GPRS Service	`7.02ms` from Delhi, IN
93.207.31.168	AS3320 Deutsche Telekom AG	`3.32ms` from Duesseldorf, DE
201.4.166.88	AS7738 V tal	`0.74ms` from Fortaleza, BR
37.196.168.88	AS1257 Tele2 Sverige AB	`0.47ms` from Goeteborg, SE
111.12.108.88	AS9808 China Mobile Communications Group Co., Ltd.	`11.23ms` from Nanning, CN
159.89.176.40	AS14061 DigitalOcean, LLC	`0.22ms` from New York City, US
103.7.246.168	AS38120 LG HelloVision Corp.	`3.26ms` from Seoul, KR
223.26.203.72	AS38690 HyosungITX	`1.07ms` from Seoul, KR
211.221.35.152	AS4766 Korea Telecom	`7.34ms` from Seoul, KR

Traceroute

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

traceroute -a -n -q1 203.2.75.12

traceroute to 203.2.75.12 (203.2.75.12): 64 hops max, 52 byte packets

1 [AS31898] 140.91.224.3 0.074 ms

2 [AS7474] 59.154.187.138 3.283 ms

3 [AS7474] 59.154.187.137 1.206 ms

4 *

5 [AS4804] 210.49.109.102 1.567 ms

6 *

7 *

8 [AS4804] 203.2.75.12 1.293 ms

Measurement taken from

IPinfo ProbeNet in Melbourne, AU

On October 30th 2025

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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