203.17.138.0/24

AS16509 · Amazon.com, Inc.

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Summary

Country	Australia
Domain	optus.com.au
ASN	AS16509
Registry	APNIC
ID	OPTUSCOM-AU

WHOIS Details

inetnum:        203.17.138.0 - 203.17.138.255
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:        --------------------------------------------------------
remarks:        -----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
mnt-by:         APNIC-HM
mnt-routes:     MAINT-OPTUSCOM-AP
mnt-irt:        IRT-OPTUSCOM-AU
last-modified:  2024-03-06T00:40:32Z
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:  2025-11-18T00:26:33Z
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:          203.17.138.0/24
origin:         AS14618
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:  2024-03-06T00:48:52Z
source:         APNIC

route:          203.17.138.0/24
origin:         AS16509
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:  2024-03-06T00:48:46Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 203.17.0.0/16

Range	ASN	Company	Num of IPs
203.17.168.0/21	AS9893	Cenitex	2,048
203.17.96.0/21	AS4739	iiNet Limited	2,048
203.17.40.0/21	AS1221	Telstra Limited	2,048
203.17.76.0/22	AS17766	Nexon Asia Pacific Pty Ltd	1,024
203.17.32.0/22	AS24543	First Data Resources Australia	1,024
203.17.204.0/22	AS4826	Mitsubishi Electric Australia Pty Ltd	1,024
203.17.148.0/22	AS38611	Bendigo Community Telco Limited	1,024
203.17.240.0/22	AS140065	CiFi Pty Ltd	1,024
203.17.220.0/23	AS8075	AUSTRADE	512
203.17.212.0/23	AS38333	My Net Fone Limited	512
203.17.244.0/23	AS137409	GSL Networks Pty LTD	512
203.17.245.0/24	AS137409	GSL Networks Pty LTD - Amsterdam	256
203.17.137.0/24	AS150151	SKY COMMUNICATIONS INTERNET SERVICES	256
203.17.177.0/24	AS154167	Rackmill	256
203.17.165.0/24	AS16509	Uniware Managed Services Pty Ltd	256
203.17.236.0/24	AS17632	Barristers' Chambers Limited,	256
203.17.70.0/24	AS17807	State Library of Queensland	256
203.17.23.0/24	AS17882	Univision LLC	256
203.17.126.0/24	AS209242	LACHTARISTO HOLDINGS LIMITED	256
203.17.123.0/24	AS212384	Private Customer	256
203.17.66.0/24	AS34414	Nokia Solutions and Networks Australia Pty Ltd	256
203.17.226.0/24	AS38424	KOREA CABLE TELECOM	256
203.17.36.0/24	AS38719	Dreamscape Networks PTY LTD	256
203.17.166.0/24	AS45158	ISW Technology Pty Ltd	256
203.17.253.0/24	AS45240	Realestate.com.au Limited	256
203.17.225.0/24	AS45570	Active Ideas Pty. Ltd.	256
203.17.185.0/24	AS45867	Commonwealth Bank of Australia	256
203.17.7.0/24	AS4826	City Of Kwinana	256
203.17.93.0/24	AS4826	Denver Technology	256
203.17.65.0/24	AS63996	MD Rehanur Rahman t/a M/S FNF Online	256
203.17.251.0/24	AS7545	Data Analysis Australia	256
203.17.8.0/24	AS7545	TPG Internet Pty Ltd.	256
203.17.215.0/24	AS7637	State Library of Victoria	256
203.17.29.0/24	AS7703	Westway Nominees Pty Ltd t/a Bekkers	256
203.17.73.0/24	AS9268	Ultrahost Pty Ltd	256
203.17.167.0/24	AS9336	ID Interdomain	256
203.17.120.0/24	AS9893	Cenitex	256
203.17.31.0/24	AS10215	Microland Limited	256
203.17.163.0/24	AS9942	TPG Internet Pty Ltd.	256
203.17.237.0/24	AS10557	UAB code200	256
203.17.162.0/24	AS1221	Telstra Limited	256
203.17.194.0/24	AS131302	294/3 Vidhya Nagari Marg	256
203.17.12.0/24	AS134802	Naic Cable TV Corp.	256
203.17.180.0/24	AS135600	Whiz Communications Pte Ltd	256
203.17.181.0/24	AS135600	Whiz Communications Pte Ltd	256
203.17.214.0/24	AS136518	Department of Planning, Lands and Heritage	256
203.17.193.0/24	AS136572	The Office of the Chief Information Officer (OCIO)	256
203.17.154.0/24	AS137060	The Club Group Pty Limited	256
203.17.244.0/24	AS137409	GSL Networks Pty LTD - Amsterdam	256

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

Read more

Pingable IPs

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
204.204.89.120	AS7421 Sprint	`0.11ms` from Ashburn, US
89.152.236.200	AS2860 NOS COMUNICACOES, S.A.	`6.79ms` from Braga, PT
172.74.169.232	AS11426 Charter Communications Inc	`7.33ms` from Charlotte, US
183.57.32.40	AS4134 CHINANET-BACKBONE	`7.42ms` from Guangzhou, CN
175.168.44.200	AS4837 CHINA UNICOM China169 Backbone	`13.59ms` from Liaoyang, CN
76.88.229.104	AS20001 Charter Communications Inc	`8.90ms` from Los Angeles, US
167.17.254.104	AS14618 Amazon.com, Inc.	`0.22ms` from Reston, US
54.215.134.104	AS16509 Amazon.com, Inc.	`0.15ms` from San Jose, US
115.18.214.40	AS4766 Korea Telecom	`8.96ms` from Seoul, KR
16.16.1.24	AS16509 Amazon.com, Inc.	`0.46ms` from Stockholm, SE
155.91.8.8	AS7054 Merck and Co., Inc.	`0.68ms` from Ashburn, US
102.50.240.40	AS6713 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	`5.42ms` from Casablanca, MA
174.100.254.104	AS10796 Charter Communications Inc	`9.86ms` from Columbus, US
24.100.185.168	AS11492 CABLE ONE, INC.	`5.03ms` from Dallas, US
84.92.112.184	AS6871 Plusnet	`2.92ms` from Erith, GB
109.105.64.104	AS8359 MTS PJSC	`12.52ms` from Krasnoyarsk, RU
193.248.190.56	AS3215 Orange S.A.	`1.68ms` from Paris, FR
119.167.238.168	AS4837 CHINA UNICOM China169 Backbone	`0.88ms` from Qingdao, CN
14.80.118.200	AS4766 Korea Telecom	`5.82ms` from Seoul, KR
175.213.87.72	AS4766 Korea Telecom	`1.75ms` from Seoul, KR
31.211.244.56	AS33885 Telenor Sverige AB	`0.89ms` from Stockholm, SE
185.145.143.24	AS59494 Enigma Telecom Ltd.	`11.95ms` from Stockholm, SE
177.206.104.40	AS18881 TELEFÔNICA BRASIL S.A	`12.44ms` from São Paulo, BR
79.119.21.88	AS8708 DIGI ROMANIA S.A.	`3.76ms` from Timisoara, RO
118.67.85.152	AS15830 Equinix (EMEA) Acquisition Enterprises B.V.	`1.15ms` from Tokyo, JP

Traceroute

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

traceroute -a -n -q1 -f6 -m10 203.17.138.131

traceroute to 203.17.138.131 (203.17.138.131): 10 hops max, 52 byte packets

6 [] 139.150.100.60 15.439 ms

7 [AS16509] 52.93.248.65 7.708 ms

8 *

9 *

10 *

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On December 14th 2025

What are IP address ranges?

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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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