175.37.0.0/16

AS4804 · Microplex PTY LTD

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Summary

Country	Australia
Domain	optus.net.au
ASN	AS4804
Parent Range	175.32.0.0/13
Registry	APNIC
ID	OPTUSINTERNET-AU

WHOIS Details

inetnum:        175.32.0.0 - 175.39.255.255
netname:        OPTUSINTERNET-AU
descr:          OPTUS INTERNET - RETAIL
descr:          INTERNET SERVICES
descr:          1 Lyonpark Road, Macquarie Park, NSW - 2113
country:        AU
org:            ORG-OIPL5-AP
admin-c:        OI3-AP
tech-c:         OI3-AP
abuse-c:        AO400-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-AU-OPTUSINTERNET
mnt-routes:     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:          175.32.0.0/13
origin:         AS4804
descr:          Optus Internet Pty Ltd Building F, 3rd Floor 1 Lyonpark Road
mnt-by:         MAINT-AU-OPTUSINTERNET
last-modified:  2021-07-09T04:16:47Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 175.37.0.0/16

Range	ASN	Company	Num of IPs
175.32.0.0/13	AS4804	OPTUS INTERNET - RETAIL	524,288

Nearby Ranges

BGP prefixes that overlap with 175.0.0.0/8

Range	ASN	Company	Num of IPs
175.0.0.0/12	AS151823	CHINANET HUNAN PROVINCE NETWORK	1,048,576
175.0.0.0/12	AS4134	CHINANET HUNAN PROVINCE NETWORK	1,048,576
175.112.0.0/12	AS9318	SK Broadband Co Ltd	1,048,576
175.0.0.0/12	AS63838	CHINANET HUNAN PROVINCE NETWORK	1,048,576
175.0.0.0/12	AS63835	CHINANET HUNAN PROVINCE NETWORK	1,048,576
175.160.0.0/12	AS4837	CHINA UNICOM Liaoning province network	1,048,576
175.16.0.0/13	AS4837	China Unicom Jilin province network	524,288
175.208.0.0/13	AS4766	Korea Telecom	524,288
175.136.0.0/13	AS4788	TM TECHNOLOGY SERVICES SDN. BHD.	524,288
175.32.0.0/13	AS4804	OPTUS INTERNET - RETAIL	524,288
175.148.0.0/14	AS4837	CHINA UNICOM Liaoning province network	262,144
175.96.0.0/14	AS131628	Taiwan Fixed Network CO.,LTD.	262,144
175.96.0.0/14	AS9924	Taiwan Fixed Network CO.,LTD.	262,144
175.152.0.0/14	AS4837	China Unicom SiChuan province network	262,144
175.42.0.0/15	AS4837	China Unicom Fujian Province Network	131,072
175.144.0.0/15	AS4788	TM TECHNOLOGY SERVICES SDN. BHD.	131,072
175.146.0.0/15	AS4837	CHINA UNICOM Liaoning province network	131,072
175.104.0.0/15	AS10013	FreeBit Co., Ltd.	131,072
175.186.0.0/15	AS4538	China Education and Research Network	131,072
175.30.0.0/15	AS4134	CHINANET Jilin province network	131,072
175.178.0.0/16	AS45090	Tencent cloud computing (Beijing) Co., Ltd.	65,536
175.144.0.0/16	AS4788	TMNST	65,536
175.157.0.0/16	AS18001	Dialog Axiata PLC.	65,536
175.185.0.0/16	AS4538	China Education and Research Network	65,536
175.145.0.0/16	AS4788	TMNST	65,536
175.177.0.0/16	AS9365	its communications Inc.	65,536
175.140.0.0/16	AS4788	TMNST	65,536
175.141.0.0/16	AS4788	TMNST	65,536
175.138.0.0/16	AS4788	TMNST	65,536
175.136.0.0/16	AS4788	TMNST	65,536
175.137.0.0/16	AS4788	TMNST	65,536
175.142.0.0/16	AS4788	TMNST	65,536
175.143.0.0/16	AS4788	TMNST	65,536
175.27.0.0/16	AS45090	Tencent cloud computing (Beijing) Co., Ltd.	65,536
175.24.0.0/16	AS45090	Tencent cloud computing (Beijing) Co., Ltd.	65,536
175.139.0.0/16	AS4788	TMNST	65,536
175.156.0.0/16	AS4773	M1 LIMITED	65,536
175.25.0.0/16	AS23724	Beijing SHUJUJIA	65,536
175.25.0.0/16	AS56019	Beijing SHUJUJIA	65,536
175.44.0.0/16	AS4837	China Unicom Fujian Province Network	65,536
175.110.128.0/17	AS25019	Saudi Telecom Company JSC	32,768
175.184.0.0/17	AS2510	FUJITSU LIMITED	32,768
175.179.128.0/17	AS2510	FUJITSU LIMITED	32,768
175.100.0.0/17	AS38623	VIETTEL (CAMBODIA) PTE., LTD.	32,768
175.28.128.0/17	AS7679	QTnet,Inc.	32,768
175.176.0.0/17	AS10139	Smart Broadband Incorporated	32,768
175.106.128.0/17	AS4837	Zhongyuan Petroleum Explore Bureau Communication Company	32,768
175.156.128.0/17	AS4773	M1 Ltd	32,768
175.99.0.0/18	AS131628	Taiwan Fixed Network CO.,LTD.	16,384
175.107.128.0/18	AS22616	Zscaler Australia Pty Ltd	16,384

Hosted domains

There are 10 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
175.37.13.240	flamingoavenue.com.au	2
175.37.214.128	vk3vo.org	1
175.37.231.140	bdsmmanager.net	1

Hosted domains API

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Useful for Cybersecurity

Read more

Pingable IPs

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

IP Address	ASN	Details
175.37.21.132	AS4804 Microplex PTY LTD	`8.64ms` from Melbourne, AU
175.37.3.113	AS4804 Microplex PTY LTD	`9.91ms` from Melbourne, AU
175.37.23.99	AS4804 Microplex PTY LTD	`5.29ms` from Melbourne, AU
175.37.1.112	AS4804 Microplex PTY LTD	`7.39ms` from Melbourne, AU
175.37.0.1	AS4804 Microplex PTY LTD	`1.52ms` from Melbourne, AU
175.37.8.1	AS4804 Microplex PTY LTD	`1.64ms` from Melbourne, AU
175.37.6.14	AS4804 Microplex PTY LTD	`24.63ms` from Sydney, AU
175.37.24.1	AS4804 Microplex PTY LTD	`1.57ms` from Melbourne, AU
175.37.11.196	AS4804 Microplex PTY LTD	`12.07ms` from Melbourne, AU
175.37.15.236	AS4804 Microplex PTY LTD	`18.48ms` from Melbourne, AU
175.37.4.163	AS4804 Microplex PTY LTD	`3.24ms` from Melbourne, AU
175.37.22.125	AS4804 Microplex PTY LTD	`6.01ms` from Melbourne, AU
175.37.20.139	AS4804 Microplex PTY LTD	`5.86ms` from Melbourne, AU
175.37.5.139	AS4804 Microplex PTY LTD	`5.29ms` from Melbourne, AU
175.37.2.69	AS4804 Microplex PTY LTD	`22.24ms` from Sydney, AU
175.37.16.1	AS4804 Microplex PTY LTD	`1.48ms` from Melbourne, AU
175.37.10.4	AS4804 Microplex PTY LTD	`4.56ms` from Melbourne, AU
175.37.25.176	AS4804 Microplex PTY LTD	`6.36ms` from Melbourne, AU
175.37.13.62	AS4804 Microplex PTY LTD	`10.59ms` from Melbourne, AU
175.37.26.38	AS4804 Microplex PTY LTD	`4.83ms` from Melbourne, AU
175.37.7.143	AS4804 Microplex PTY LTD	`3.07ms` from Melbourne, AU
175.37.239.11	AS4804 Microplex PTY LTD	`5.08ms` from Melbourne, AU
175.37.248.1	AS4804 Microplex PTY LTD	`1.48ms` from Melbourne, AU
175.37.230.130	AS4804 Microplex PTY LTD	`7.62ms` from Melbourne, AU
175.37.235.164	AS4804 Microplex PTY LTD	`4.13ms` from Melbourne, 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
20.95.68.0	AS8075 Microsoft Corporation	`1.42ms` from Amsterdam, NL
125.39.155.64	AS4837 CHINA UNICOM China169 Backbone	`4.63ms` from Beijing, CN
4.150.71.208	AS8075 Microsoft Corporation	`0.31ms` from Boydton, US
191.223.136.48	AS8167 V tal	`4.49ms` from Brasilia, BR
86.42.213.32	AS5466 Eircom Limited	`2.85ms` from Dublin, IE
89.37.41.96	AS216393 Synapt ApS	`0.10ms` from Fremont, US
94.166.40.128	AS1267 WIND TRE S.P.A.	`17.93ms` from Frosinone, IT
113.111.108.96	AS4134 CHINANET-BACKBONE	`2.55ms` from Guangzhou, CN
95.70.57.16	AS12389 PJSC Rostelecom	`1.23ms` from Khabarovsk, RU
20.20.49.64	AS8075 Microsoft Corporation	`0.35ms` from Kuala Lumpur, MY
86.1.201.80	AS5089 Virgin Media Limited	`5.58ms` from London, GB
67.119.255.112	AS7018 AT&T Enterprises, LLC	`4.07ms` from Los Angeles, US
151.48.243.96	AS1267 WIND TRE S.P.A.	`6.31ms` from Milan, IT
34.12.140.32	AS396982 Google LLC	`0.13ms` from Oudeschip, NL
176.163.98.176	AS5410 Bouygues Telecom SA	`7.55ms` from Paris, FR
44.215.116.208	AS14618 Amazon.com, Inc.	`0.61ms` from Reston, US
79.5.234.0	AS3269 Telecom Italia S.p.A.	`6.49ms` from Rome, IT
121.138.119.80	AS4766 Korea Telecom	`1.38ms` from Seoul, KR
109.231.48.0	AS34525 KOBA Sp. z o.o.	`2.66ms` from Warsaw, PL
178.129.230.176	AS28812 PJSC "Bashinformsvyaz"	`8.99ms` from Yekaterinburg, RU
193.28.195.32	AS24786 ProSiebenSat.1 Tech & Services GmbH	`5.34ms` from Zuerich, CH
44.255.111.48	AS16509 Amazon.com, Inc.	`0.26ms` from Boardman, US
61.130.225.192	AS4134 CHINANET-BACKBONE	`7.73ms` from Hangzhou, CN
46.0.217.160	AS34533 JSC "ER-Telecom Holding"	`0.89ms` from Samara, RU
117.52.138.176	AS23576 NAVER Cloud Corp.	`0.75ms` 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 175.37.72.1

traceroute to 175.37.72.1 (175.37.72.1): 64 hops max, 52 byte packets

1 [AS31898] 140.91.224.64 0.084 ms

2 [AS7474] 59.154.187.138 0.951 ms

3 [AS7474] 59.154.187.137 1.299 ms

4 *

5 [AS4804] 175.37.72.1 1.638 ms

Measurement taken from

IPinfo ProbeNet in Melbourne, AU

On December 6th 2025

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