203.202.0.0/24

AS56307 · ac3, Australian Centre for Advanced Computing and Communications

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Summary

Country	Australia
Domain	optus.com.au
ASN	AS56307
Parent Range	203.202.0.0/17
Registry	APNIC
ID	OPTUSCOM-AU

WHOIS Details

inetnum:        203.202.0.0 - 203.202.127.255
netname:        OPTUSCOM-AU
descr:          SingTel Optus Pty Ltd
descr:          INTERNET SERVICES
descr:          Optus Macquarie Park (OCS)
descr:          1 Lyonpark Road
descr:          Macquarie Park NSW 2113
country:        AU
org:            ORG-SOPL2-AP
admin-c:        OA3-AP
tech-c:         OA3-AP
abuse-c:        AO399-AP
status:         ALLOCATED 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-lower:      MAINT-OPTUSCOM-AP
mnt-irt:        IRT-OPTUSCOM-AU
last-modified:  2025-01-22T05:41:56Z
mnt-routes:     MAINT-OPTUSCOM-AP
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 2025-12-23
mnt-by:         MAINT-OPTUSCOM-AP
last-modified:  2026-02-02T03:10:28Z
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 2025-12-23
abuse-mailbox:  abuse@optusnet.com.au
mnt-by:         APNIC-ABUSE
last-modified:  2025-12-23T22:44:48Z
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:          203.202.0.0/17
descr:          Singtel Optus Pty Ltd
origin:         AS7474
mnt-by:         MAINT-OPTUSCOM-AP
mnt-routes:     MAINT-OPTUSCOM-AP
last-modified:  2025-01-22T05:44:23Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 203.202.0.0/24

Range	ASN	Company	Num of IPs
203.202.0.0/17	AS4804	SingTel Optus Pty Ltd	32,768
203.202.0.0/17	AS56307	SingTel Optus Pty Ltd	32,768
203.202.0.0/17	AS7474	SingTel Optus Pty Ltd	32,768

Nearby Ranges

BGP prefixes that overlap with 203.202.0.0/16

Range	ASN	Company	Num of IPs
203.202.0.0/17	AS7474	SingTel Optus Pty Ltd	32,768
203.202.0.0/17	AS56307	SingTel Optus Pty Ltd	32,768
203.202.0.0/17	AS4804	SingTel Optus Pty Ltd	32,768
203.202.128.0/18	AS7474	SingTel Optus Pty Ltd	16,384
203.202.192.0/19	AS7524	ITEC Hankyu Hanshin Co.,Ltd.	8,192
203.202.240.0/20	AS24323	Aamra Networks Limited, Internet Service Provider.	4,096
203.202.228.0/23	AS38176	ABS Global Ltd	512
203.202.236.0/23	AS23724	CHINANET FUJIAN PROVINCE NETWORK	512
203.202.224.0/23	AS38176	ABS Global Ltd	512
203.202.226.0/23	AS38176	ABS Global Ltd	512
203.202.228.0/24	AS38176	ABS Global Ltd	256
203.202.229.0/24	AS38176	ABS Global Ltd	256
203.202.232.0/24	AS44382	IPv4.Center	256
203.202.235.0/24	AS45355	BSP Fiji	256
203.202.233.0/24	AS205570	Superonline Iletisim Hizmetleri A.S.	256
203.202.227.0/24	AS38176	ABS Global Ltd	256
203.202.226.0/24	AS38176	ABS Global Ltd	256
203.202.225.0/24	AS38176	ABS Global Ltd	256
203.202.224.0/24	AS38176	ABS Global Ltd	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

Read more

Pingable IPs

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

IP Address	ASN	Details
203.202.0.173	AS56307 ac3, Australian Centre for Advanced Computing and Communications	`2.13ms` 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
64.18.201.216	AS14127 Iland Internet Solutions Corporation	`0.47ms` from Ashburn, US
110.164.240.40	AS45758 Triple T Broadband Public Company Limited	`5.62ms` from Bangkok, TH
191.242.20.56	AS263466 M.P. TELECOM LTDA - EPP	`6.65ms` from Brasília, BR
105.255.131.248	AS36994 Vodacom	`1.22ms` from Johannesburg, ZA
45.84.130.120	AS47764 LLC VK	`0.70ms` from Moscow, RU
85.91.101.152	AS8641 BACKBONE AS of Nauka-Svyaz	`2.82ms` from Moscow, RU
66.108.113.72	AS12271 Charter Communications Inc	`3.94ms` from New York City, US
183.79.254.248	AS24572 Yahoo Japan	`0.30ms` from Osaka, JP
44.211.68.136	AS14618 Amazon.com, Inc.	`0.41ms` from Reston, US
99.74.152.184	AS7018 AT&T Enterprises, LLC	`12.31ms` from San Antonio, US
54.255.241.104	AS16509 Amazon.com, Inc.	`0.19ms` from Singapore, SG
93.123.4.104	AS208389 Focus IT Solutions	`0.69ms` from Varna, BG
96.18.2.248	AS11492 CABLE ONE, INC.	`19.78ms` from Dallas, US
112.92.22.8	AS17816 China Unicom IP network China169 Guangdong province	`10.63ms` from Guangzhou, CN
91.45.67.216	AS3320 Deutsche Telekom AG	`4.12ms` from Hamburg, DE
90.217.204.168	AS5607 Sky UK Limited	`10.37ms` from London, GB
72.196.33.88	AS22773 Cox Communications Inc.	`3.59ms` from Los Angeles, US
38.196.15.40	AS264750 TELEOPERADORA DEL NORDESTE S.R.L	`18.37ms` from Miami, US
121.31.110.232	AS4837 CHINA UNICOM China169 Backbone	`6.62ms` from Nanning, CN
67.85.230.232	AS6128 Cablevision Systems Corp.	`3.49ms` from New York City, US
73.33.209.184	AS7922 Comcast Cable Communications, LLC	`7.17ms` from New York City, US
97.106.142.24	AS33363 Charter Communications, Inc	`9.69ms` from Orlando, US
141.158.42.248	AS701 Verizon Business	`0.94ms` from Philadelphia, US
218.145.28.168	AS4766 Korea Telecom	`1.94ms` from Seoul, KR
177.140.237.200	AS28573 Claro NXT Telecomunicacoes Ltda	`5.07ms` from São Paulo, BR

Traceroute

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

traceroute -a -n -q1 -f4 203.202.0.173

traceroute to 203.202.0.173 (203.202.0.173): 64 hops max, 52 byte packets

4 [AS63949] 172.105.160.102 0.376 ms

5 [] 45.127.172.62 40.274 ms

6 *

7 [AS56307] 203.202.0.173 3.403 ms

Measurement taken from

IPinfo ProbeNet in Sydney, AU

On January 30th 2026

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.

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