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	AS63835	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	AS4134	CHINANET HUNAN PROVINCE NETWORK	1,048,576
175.0.0.0/12	AS63838	CHINANET HUNAN PROVINCE NETWORK	1,048,576
175.160.0.0/12	AS4837	CHINA UNICOM Liaoning province network	1,048,576
175.208.0.0/13	AS4766	Korea Telecom	524,288
175.16.0.0/13	AS4837	China Unicom Jilin province network	524,288
175.32.0.0/13	AS4804	OPTUS INTERNET - RETAIL	524,288
175.136.0.0/13	AS4788	TM TECHNOLOGY SERVICES SDN. BHD.	524,288
175.96.0.0/14	AS9924	Taiwan Fixed Network CO.,LTD.	262,144
175.96.0.0/14	AS131628	Taiwan Fixed Network CO.,LTD.	262,144
175.152.0.0/14	AS4837	China Unicom SiChuan province network	262,144
175.148.0.0/14	AS4837	CHINA UNICOM Liaoning province network	262,144
175.146.0.0/15	AS4837	CHINA UNICOM Liaoning province network	131,072
175.42.0.0/15	AS4837	China Unicom Fujian Province Network	131,072
175.186.0.0/15	AS4538	China Education and Research Network	131,072
175.104.0.0/15	AS10013	FreeBit Co., Ltd.	131,072
175.144.0.0/15	AS4788	TM TECHNOLOGY SERVICES SDN. BHD.	131,072
175.30.0.0/15	AS4134	CHINANET Jilin province network	131,072
175.138.0.0/16	AS4788	TMNST	65,536
175.139.0.0/16	AS4788	TMNST	65,536
175.185.0.0/16	AS4538	China Education and Research Network	65,536
175.136.0.0/16	AS4788	TMNST	65,536
175.140.0.0/16	AS4788	TMNST	65,536
175.145.0.0/16	AS4788	TMNST	65,536
175.137.0.0/16	AS4788	TMNST	65,536
175.144.0.0/16	AS4788	TMNST	65,536
175.177.0.0/16	AS9365	its communications Inc.	65,536
175.141.0.0/16	AS4788	TMNST	65,536
175.27.0.0/16	AS45090	Tencent cloud computing (Beijing) Co., Ltd.	65,536
175.25.0.0/16	AS23724	Beijing SHUJUJIA	65,536
175.142.0.0/16	AS4788	TMNST	65,536
175.178.0.0/16	AS45090	Tencent cloud computing (Beijing) Co., Ltd.	65,536
175.24.0.0/16	AS45090	Tencent cloud computing (Beijing) Co., Ltd.	65,536
175.156.0.0/16	AS4773	M1 LIMITED	65,536
175.143.0.0/16	AS4788	TMNST	65,536
175.157.0.0/16	AS18001	Dialog Axiata PLC.	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
175.28.128.0/17	AS7679	QTnet,Inc.	32,768
175.106.128.0/17	AS4837	Zhongyuan Petroleum Explore Bureau Communication Company	32,768
175.176.0.0/17	AS10139	Smart Broadband Incorporated	32,768
175.110.128.0/17	AS25019	Saudi Telecom Company JSC	32,768
175.156.128.0/17	AS4773	M1 Ltd	32,768
175.100.0.0/17	AS38623	VIETTEL (CAMBODIA) PTE., LTD.	32,768
175.184.0.0/17	AS2510	FUJITSU LIMITED	32,768
175.179.128.0/17	AS2510	FUJITSU LIMITED	32,768
175.99.64.0/18	AS9924	Taiwan Fixed Network CO.,LTD.	16,384
175.99.0.0/18	AS131628	Taiwan Fixed Network CO.,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
175.37.99.189	ashmatrix.click	1
175.37.200.229	nicobrest.com	1
175.37.2.112	family360.me	1
175.37.40.7	ekucera.com	1

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
175.37.15.236	AS4804 Microplex PTY LTD	`18.48ms` from Melbourne, AU
175.37.36.70	AS4804 Microplex PTY LTD	`3.41ms` from Melbourne, AU
175.37.31.77	AS4804 Microplex PTY LTD	`4.19ms` from Melbourne, AU
175.37.21.132	AS4804 Microplex PTY LTD	`8.64ms` from Melbourne, AU
175.37.33.219	AS4804 Microplex PTY LTD	`3.96ms` from Melbourne, AU
175.37.38.74	AS4804 Microplex PTY LTD	`11.05ms` from Melbourne, AU
175.37.2.69	AS4804 Microplex PTY LTD	`22.24ms` from Sydney, AU
175.37.28.211	AS4804 Microplex PTY LTD	`9.80ms` from Melbourne, AU
175.37.35.161	AS4804 Microplex PTY LTD	`3.64ms` from Melbourne, AU
175.37.13.62	AS4804 Microplex PTY LTD	`10.59ms` from Melbourne, AU
175.37.37.196	AS4804 Microplex PTY LTD	`3.70ms` from Melbourne, AU
175.37.1.112	AS4804 Microplex PTY LTD	`7.39ms` from Melbourne, AU
175.37.6.14	AS4804 Microplex PTY LTD	`24.63ms` from Sydney, AU
175.37.27.23	AS4804 Microplex PTY LTD	`4.18ms` from Melbourne, AU
175.37.16.1	AS4804 Microplex PTY LTD	`1.48ms` from Melbourne, AU
175.37.8.1	AS4804 Microplex PTY LTD	`1.64ms` from Melbourne, 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
175.37.3.113	AS4804 Microplex PTY LTD	`9.91ms` from Melbourne, AU
175.37.4.163	AS4804 Microplex PTY LTD	`3.24ms` from Melbourne, AU
175.37.7.143	AS4804 Microplex PTY LTD	`3.07ms` from Melbourne, AU
175.37.10.4	AS4804 Microplex PTY LTD	`4.56ms` from Melbourne, AU
175.37.5.139	AS4804 Microplex PTY LTD	`5.29ms` from Melbourne, AU
175.37.39.77	AS4804 Microplex PTY LTD	`3.36ms` from Melbourne, AU
175.37.0.1	AS4804 Microplex PTY LTD	`1.52ms` 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	`1.40ms` from Amsterdam, NL
51.8.216.48	AS8075 Microsoft Corporation	`0.41ms` from Ashburn, US
172.225.237.224	AS36183 Akamai Technologies, Inc.	`0.55ms` from Boston, US
61.130.225.192	AS4134 CHINANET-BACKBONE	`7.89ms` from Hangzhou, CN
185.202.173.128	AS64236 UnReal Servers, LLC	`0.20ms` from Kansas City, US
81.139.170.128	AS2856 British Telecommunications PLC	`5.71ms` from London, GB
81.139.209.144	AS2856 British Telecommunications PLC	`7.27ms` from London, GB
176.25.153.64	AS5607 Sky UK Limited	`7.61ms` from London, GB
169.139.190.0	AS11096 FloridaNet	`8.98ms` from Miami, US
87.26.62.48	AS3269 Telecom Italia S.p.A.	`2.84ms` from Milan, IT
98.240.124.96	AS7922 Comcast Cable Communications, LLC	`11.55ms` from Murfreesboro, US
201.29.221.112	AS7738 V tal	`12.84ms` from Rio de Janeiro, BR
24.5.182.192	AS7922 Comcast Cable Communications, LLC	`6.26ms` from San Jose, US
187.235.184.192	AS8151 UNINET	`4.66ms` from Santiago de Queretaro, MX
13.228.6.96	AS16509 Amazon.com, Inc.	`0.10ms` from Singapore, SG
111.216.81.160	AS2527 Sony Network Communications Inc.	`6.72ms` from Tokyo, JP
34.146.172.16	AS396982 Google LLC	`0.17ms` from Tokyo, JP
188.186.83.96	AS41682 JSC ER-Telecom Holding	`12.52ms` from Yekaterinburg, RU
91.82.66.144	AS20845 DIGI Tavkozlesi es Szolgaltato Kft.	`12.11ms` from Budapest, HU
107.167.160.64	AS396982 Google LLC	`6.31ms` from Dallas, US
82.69.54.128	AS13037 Zen Internet Ltd	`2.03ms` from Erith, GB
41.23.56.128	AS36994 Vodacom	`1.22ms` from Johannesburg, ZA
20.20.49.64	AS8075 Microsoft Corporation	`0.25ms` from Kuala Lumpur, MY
138.74.164.192	AS15108 Allo Communications LLC	`7.79ms` from Lincoln, US
86.165.248.144	AS2856 British Telecommunications PLC	`2.24ms` from London, GB

Traceroute

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

traceroute -a -n -q1 175.37.1.6

traceroute to 175.37.1.6 (175.37.1.6): 64 hops max, 52 byte packets

1 [AS31898] 140.91.224.63 0.083 ms

2 [AS7474] 59.154.187.138 0.754 ms

3 [AS7474] 59.154.187.137 1.073 ms

4 *

5 [AS4804] 210.49.115.78 1.528 ms

6 [AS4804] 175.37.1.6 9.15 ms

Measurement taken from

IPinfo ProbeNet in Melbourne, AU

On December 6th 2025

What are IP address ranges?

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