203.16.108.0/24

AS7474 · SingTel Optus Pty Ltd

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Summary

Country	Australia
Domain	optus.com.au
ASN	AS7474
Registry	APNIC
ID	OPTUSCOM-AU

WHOIS Details

inetnum:        203.16.64.0 - 203.16.127.255
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:         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-routes:     MAINT-OPTUSCOM-AP
mnt-irt:        IRT-OPTUSCOM-AU
last-modified:  2023-05-04T04:52:29Z
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:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        OA3-AP
tech-c:         OA3-AP
auth:           # Filtered
remarks:        [email protected] was validated on 2025-12-23
mnt-by:         MAINT-OPTUSCOM-AP
last-modified:  2025-12-23T22:44:38Z
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:         [email protected]
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:         [email protected]
admin-c:        OA3-AP
tech-c:         OA3-AP
nic-hdl:        AO399-AP
remarks:        Generated from irt object IRT-OPTUSCOM-AU
remarks:        [email protected] was validated on 2025-12-23
abuse-mailbox:  [email protected]
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:         [email protected]
remarks:        send spam/abuse reports to [email protected]
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:         [email protected]
mnt-by:         MAINT-OPTUSCOM-AP
last-modified:  2011-12-06T00:10:13Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 203.16.0.0/16

Range	ASN	Company	Num of IPs
203.16.208.0/21	AS4739	iiNet Limited	2,048
203.16.28.0/22	AS9518	JDV Limited	1,024
203.16.180.0/22	AS1221	Telstra Limited	1,024
203.16.60.0/23	AS55803	Hostopia Australia Web Pty Ltd	512
203.16.230.0/23	AS24565	NetCraft Australia Pty Ltd	512
203.16.232.0/23	AS38835	Brisbane Public Access Network Association Inc	512
203.16.196.0/24	AS17477	Sony Australia Limited	256
203.16.236.0/24	AS24436	Somerville House	256
203.16.24.0/24	AS2764	Department of Parliamentary Services Victoria	256
203.16.207.0/24	AS31736	Alain Stucki	256
203.16.175.0/24	AS45158	Blundstone Pty. Ltd.	256
203.16.227.0/24	AS45852	Bendigo Bank	256
203.16.170.0/24	AS4826	VOCUS PTY LTD	256
203.16.36.0/24	AS4826	Mitsubishi Electric Australia Pty Ltd	256
203.16.185.0/24	AS7474	Albury City Council	256
203.16.135.0/24	AS7545	iiNet Limited	256
203.16.164.0/24	AS7545	Perth College	256
203.16.229.0/24	AS7545	Pro Medicus Ltd.	256
203.16.199.0/24	AS9266	Bendor Research Pty Ltd	256
203.16.39.0/24	AS9426	Westpac Banking Corporation	256
203.16.9.0/24	AS9443	VOCUS PTY LTD	256
203.16.25.0/24	AS9723	Hughes Technologies	256
203.16.165.0/24	AS131190	Level1, Inventor Building	256
203.16.241.0/24	AS136000	Martin Gardiner Computer Consultants	256
203.16.163.0/24	AS152699	SHOCKBYTE-FRA-DE	256
203.16.177.0/24	AS153892	St Michael's Collegiate School	256
203.16.11.0/24	AS154210	PT PITUAMA UNGGULAN TEKNOLOGI	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

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

IP Address	ASN	Details
203.16.108.4	AS7474 SingTel Optus Pty Ltd	`1.52ms` 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
87.214.72.168	AS13127 Odido Netherlands B.V.	`5.25ms` from Amsterdam, NL
66.80.46.184	AS30058 FDCservers.net	`0.25ms` from Chicago, US
97.223.143.8	AS6167 Verizon Business	`9.74ms` from Chicago, US
3.126.46.136	AS16509 Amazon.com, Inc.	`0.18ms` from Frankfurt am Main, DE
31.190.217.8	AS1267 WIND TRE S.P.A.	`2.04ms` from Milan, IT
157.245.85.104	AS14061 DigitalOcean, LLC	`0.24ms` from New York City, US
82.224.36.104	AS12322 Free SAS	`10.22ms` from Paris, FR
112.232.189.168	AS4837 CHINA UNICOM China169 Backbone	`5.91ms` from Qingdao, CN
27.205.161.168	AS4837 CHINA UNICOM China169 Backbone	`3.73ms` from Qingdao, CN
34.236.192.104	AS14618 Amazon.com, Inc.	`0.40ms` from Reston, US
221.145.170.120	AS4766 Korea Telecom	`3.33ms` from Seoul, KR
124.86.78.248	AS4713 NTT DOCOMO BUSINESS,Inc.	`3.33ms` from Tokyo, JP
173.241.111.136	AS11727 Bruce Telecom	`4.44ms` from Toronto, CA
131.250.46.24	AS668 United States Department of Defense (DoD)	`2.69ms` from Ashburn, US
89.140.93.24	AS6739 VODAFONE ONO, S.A.	`4.66ms` from Barcelona, ES
20.1.82.248	AS8075 Microsoft Corporation	`0.27ms` from Boydton, US
175.16.233.72	AS4837 CHINA UNICOM China169 Backbone	`2.94ms` from Changchun, CN
18.254.97.232	AS8987 Amazon Data Services Ireland Ltd	`0.87ms` from Columbus, US
34.157.103.232	AS396982 Google LLC	`0.10ms` from Council Bluffs, US
76.130.246.24	AS7922 Comcast Cable Communications, LLC	`6.98ms` from Denver, US
90.11.159.56	AS3215 Orange S.A.	`5.61ms` from Frankfurt am Main, DE
80.147.234.120	AS3320 Deutsche Telekom AG	`4.62ms` from Frankfurt am Main, DE
60.167.92.72	AS4134 CHINANET-BACKBONE	`5.00ms` from Huai'an, CN
115.141.119.216	AS17858 LG POWERCOMM	`1.58ms` from Incheon, KR
118.46.214.168	AS4766 Korea Telecom	`0.82ms` from Incheon, KR

Traceroute

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

traceroute -a -n -q1 -f2 203.16.108.4

traceroute to 203.16.108.4 (203.16.108.4): 64 hops max, 52 byte packets

2 [AS7578] 103.137.13.4 0.248 ms

3 [AS7474] 220.101.73.37 2.391 ms

4 [AS7474] 61.88.33.9 3.924 ms

5 [AS7474] 61.88.33.2 2.388 ms

6 *

7 [AS7474] 59.154.57.32 1.576 ms

8 [AS7474] 125.63.161.194 2.096 ms

9 *

10 [AS7474] 203.16.108.4 1.525 ms

Measurement taken from

IPinfo ProbeNet in Sydney, AU

On January 31st 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.

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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