203.173.40.0/23

AS4739 · Internode Pty Ltd

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Summary

Country	Australia
Domain	iinet.net.au
ASN	AS4739
Registry	APNIC
ID	IINET-AU

WHOIS Details

inetnum:        203.173.0.0 - 203.173.63.255
netname:        IINET-AU
descr:          iiNet Limited
descr:          Level 6, 263 Adelaide Terrace
descr:          Perth
country:        AU
org:            ORG-IL1-AP
admin-c:        IH207-AP
tech-c:         IH207-AP
abuse-c:        AI376-AP
status:         ALLOCATED PORTABLE
remarks:        ----------------------------------------
remarks:        Send abuse reports to [email protected]
remarks:        ----------------------------------------
remarks:        203.173.0.0/18 migrated from Tas Access
remarks:        ---------------------------------------------------
remarks:        This object can only be modified by APNIC hostmaster
remarks:        If you wish to modify this object details please
remarks:        send email to [email protected] with your organisation
remarks:        account name in the subject line.
remarks:        ----------------------------------------------------
mnt-by:         APNIC-HM
mnt-lower:      MAINT-AU-IH207-AP
mnt-irt:        IRT-IINET-AU
last-modified:  2020-06-03T13:04:10Z
source:         APNIC

irt:            IRT-IINET-AU
address:        iiNet Limited
address:        Level 9, 250 St Georges Tce
address:        Perth
address:        WA 6000
e-mail:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        IH207-AP
tech-c:         IH207-AP
auth:           # Filtered
remarks:        [email protected] was validated on 2025-10-30
mnt-by:         MAINT-AU-IH207-AP
last-modified:  2026-01-14T02:44:47Z
source:         APNIC

organisation:   ORG-IL1-AP
org-name:       iiNet Limited
org-type:       LIR
country:        AU
address:        502 Hay St
phone:          +61-8-9214-2222
fax-no:         +61-8-9214-2211
e-mail:         [email protected]
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:14:51Z
source:         APNIC

role:           ABUSE IINETAU
country:        ZZ
address:        iiNet Limited
address:        Level 9, 250 St Georges Tce
address:        Perth
address:        WA 6000
phone:          +000000000
e-mail:         [email protected]
admin-c:        IH207-AP
tech-c:         IH207-AP
nic-hdl:        AI376-AP
remarks:        Generated from irt object IRT-IINET-AU
remarks:        [email protected] was validated on 2025-10-30
abuse-mailbox:  [email protected]
mnt-by:         APNIC-ABUSE
last-modified:  2025-10-30T06:56:20Z
source:         APNIC

person:         iiNet Hostmaster
nic-hdl:        IH207-AP
e-mail:         [email protected]
address:        iiNet Limited
address:        Level 9, 250 St Georges Tce
address:        Perth
address:        WA 6000
country:        AU
phone:          +61-8-9214-2222
fax-no:         +61-8-9214-2211
mnt-by:         MAINT-AU-IH207-AP
last-modified:  2011-12-22T05:14:51Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 203.173.0.0/16

Range	ASN	Company	Num of IPs
203.173.128.0/17	AS9500	One New Zealand Group Limited	32,768
203.173.96.0/19	AS202736	ILINKKOREA	8,192
203.173.96.0/19	AS38676	ILINKKOREA	8,192
203.173.64.0/20	AS17977	NF Park Bldg.3F, 9-15, Futaba 2-Chome	4,096
203.173.80.0/21	AS38715	Foresightwave INC.	2,048
203.173.115.0/24	AS202736	ILINKKOREAS	256
203.173.125.0/24	AS38676	RED MOUSE	256
203.173.92.0/24	AS18059	BUANTER-NET	256
203.173.106.0/24	AS395793	ILINKKOREAS	256
203.173.94.0/24	AS18059	BUANTER-NET	256
203.173.93.0/24	AS18059	BUANTER-NET	256
203.173.95.0/24	AS18059	BUANTER-NET	256

Hosted domains

There are 12 domain names hosted across 10 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
203.173.40.41	imatami.com.au	2
203.173.41.119	lindereng.com.au	2
203.173.40.16	foreverhome.name	1
203.173.41.210	evielaughlin.com	1
203.173.41.134	12thmonkey.net	1
203.173.40.197	binarymasterart.com	1
203.173.40.203	bullards.com.au	1
203.173.41.29	urmumshouse.com	1
203.173.41.103	lidfill.com	1
203.173.41.171	kanopycompany.com.au	1

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

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

IP Address	ASN	Details
203.173.40.167	AS4739 Internode Pty Ltd	`2.07ms` from Melbourne, AU
203.173.41.95	AS4739 Internode Pty Ltd	`1.46ms` 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
154.240.50.135	AS36947 Telecom Algeria	`14.91ms` from Algiers, DZ
48.194.126.231	AS8075 Microsoft Corporation	`0.44ms` from Ashburn, US
129.79.135.71	AS87 Indiana University	`5.26ms` from Chicago, US
99.89.61.135	AS7018 AT&T Enterprises, LLC	`2.38ms` from Houston, US
84.202.228.55	AS2119 Telenor Norge AS	`9.81ms` from Oslo, NO
82.65.239.103	AS12322 Free SAS	`1.91ms` from Paris, FR
100.16.49.119	AS701 Verizon Business	`4.63ms` from Philadelphia, US
34.200.1.39	AS14618 Amazon.com, Inc.	`0.18ms` from Reston, US
126.4.44.215	AS17676 SoftBank Corp.	`7.82ms` from Tokyo, JP
86.89.154.135	AS1136 KPN B.V.	`1.47ms` from Amsterdam, NL
20.13.25.151	AS8075 Microsoft Corporation	`1.27ms` from Amsterdam, NL
67.101.118.23	AS6079 RCN	`1.58ms` from Ashburn, US
86.121.204.183	AS8708 DIGI ROMANIA S.A.	`2.75ms` from Bucharest, RO
97.183.116.103	AS6167 Verizon Business	`17.82ms` from Chicago, US
93.220.210.71	AS3320 Deutsche Telekom AG	`8.32ms` from Frankfurt am Main, DE
91.19.42.247	AS3320 Deutsche Telekom AG	`6.92ms` from Frankfurt am Main, DE
91.246.251.71	AS34779 T-2, d.o.o.	`2.63ms` from Ljubljana, SI
15.216.151.167	AS16509 Amazon.com, Inc.	`5.59ms` from Madrid, ES
219.103.9.23	AS18135 BTV CO.,LTD.	`12.44ms` from Osaka, JP
120.27.107.55	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`0.33ms` from Qingdao, CN
137.140.231.71	AS22303 State University of New York at New Paltz	`3.56ms` from Secaucus, US
71.91.221.151	AS20115 Charter Communications LLC	`6.12ms` from St. Louis, US
123.5.185.231	AS4837 CHINA UNICOM China169 Backbone	`4.06ms` from Zhengzhou, CN
68.131.66.39	AS701 Verizon Business	`8.91ms` from Ashburn, US
192.24.173.215	AS6181 Cincinnati Bell Telephone Company LLC	`1.57ms` from Cincinnati, US

Traceroute

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

traceroute -a -n -q1 203.173.41.87

traceroute to 203.173.41.87 (203.173.41.87): 64 hops max, 52 byte packets

1 [AS15169] 142.250.224.121 84.001 ms

2 *

3 [AS7545] 27.32.160.13 84.038 ms

4 [AS4739] 203.173.41.87 87.312 ms

Measurement taken from

IPinfo ProbeNet in Singapore, SG

On January 9th 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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