203.158.40.0/21

AS7545 · TPG Telecom Limited

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Summary

Country	Australia
Domain	iinet.net.au
ASN	AS7545
Parent Range	203.158.32.0/19
Registry	APNIC
ID	IINET-AU

WHOIS Details

inetnum:        203.158.32.0 - 203.158.63.255
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:        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-IINET
mnt-irt:        IRT-IINET-AU
last-modified:  2020-06-03T13:04:13Z
source:         APNIC

irt:            IRT-IINET-AU
address:        iiNet Limited
address:        Level 9, 250 St Georges Tce
address:        Perth
address:        WA 6000
e-mail:         noc@staff.iinet.net.au
abuse-mailbox:  noc@staff.iinet.net.au
admin-c:        IH207-AP
tech-c:         IH207-AP
auth:           # Filtered
remarks:        noc@staff.iinet.net.au 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:         noc@iinet.net.au
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:         noc@staff.iinet.net.au
admin-c:        IH207-AP
tech-c:         IH207-AP
nic-hdl:        AI376-AP
remarks:        Generated from irt object IRT-IINET-AU
remarks:        noc@staff.iinet.net.au was validated on 2025-10-30
abuse-mailbox:  noc@staff.iinet.net.au
mnt-by:         APNIC-ABUSE
last-modified:  2025-10-30T06:56:20Z
source:         APNIC

person:         iiNet Hostmaster
nic-hdl:        IH207-AP
e-mail:         abuse@iinet.net.au
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

Overlapping Ranges

BGP prefixes that contain 203.158.40.0/21

Range	ASN	Company	Num of IPs
203.158.32.0/19	AS7545	iiNet Limited	8,192

Nearby Ranges

BGP prefixes that overlap with 203.158.0.0/16

Range	ASN	Company	Num of IPs
203.158.96.0/19	AS137546	Rajamangala University of Technology Thanyaburi	8,192
203.158.32.0/19	AS7545	iiNet Limited	8,192
203.158.96.0/19	AS9903	Rajamangala University of Technology Thanyaburi	8,192
203.158.0.0/21	AS55545	Suranaree University of Technology	2,048
203.158.24.0/21	AS45960	YTL Communications Sdn Bhd	2,048
203.158.72.0/23	AS5400	BT Global Fabric customers	512
203.158.76.0/23	AS5400	BT Global Fabric customers	512
203.158.68.0/23	AS5400	BT Global Fabric customers	512

Hosted domains

There is 1 domain name hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
203.158.41.140	avcustom.net	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

1,411 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
203.158.42.95	AS7545 TPG Telecom Limited	`1.09ms` from Sydney, AU
203.158.41.17	AS7545 TPG Telecom Limited	`1.02ms` from Sydney, AU
203.158.46.191	AS7545 TPG Telecom Limited	`1.10ms` from Sydney, AU
203.158.40.59	AS7545 TPG Telecom Limited	`1.04ms` from Sydney, AU
203.158.44.115	AS7545 TPG Telecom Limited	`1.15ms` from Sydney, AU
203.158.45.227	AS7545 TPG Telecom Limited	`1.26ms` from Sydney, AU
203.158.43.118	AS7545 TPG Telecom Limited	`1.14ms` from Sydney, AU
203.158.47.223	AS7545 TPG Telecom Limited	`1.11ms` 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
24.3.195.85	AS7922 Comcast Cable Communications, LLC	`11.50ms` from Ashburn, US
52.224.134.197	AS8075 Microsoft Corporation	`0.43ms` from Ashburn, US
117.13.13.229	AS4837 CHINA UNICOM China169 Backbone	`4.83ms` from Beijing, CN
44.238.213.197	AS16509 Amazon.com, Inc.	`0.19ms` from Boardman, US
185.150.17.85	AS60118 INVITE Systems SRL	`0.18ms` from Bucharest, RO
148.70.16.213	AS45090 Shenzhen Tencent Computer Systems Company Limited	`0.75ms` from Chengdu, CN
72.108.87.85	AS6167 Verizon Business	`18.59ms` from Chicago, US
113.45.20.149	AS55990 Huawei Cloud Service data center	`1.86ms` from Guangzhou, CN
108.197.155.197	AS7018 AT&T Enterprises, LLC	`2.14ms` from Houston, US
24.225.3.245	AS14155 Rural Telephone Service Co, Inc.	`9.31ms` from Kansas City, US
62.82.72.21	AS6739 Vodafone ONO AS	`0.58ms` from Madrid, ES
97.127.26.117	AS209 CenturyLink Communications, LLC	`1.88ms` from Minneapolis, US
149.99.25.149	AS812 Rogers Communications Canada Inc.	`0.89ms` from Montreal, CA
45.3.189.85	AS33363 Charter Communications, Inc	`3.13ms` from Orlando, US
101.110.46.245	AS17676 SoftBank Corp.	`7.61ms` from Osaka, JP
153.34.224.181	AS4837 CHINA UNICOM China169 Backbone	`5.25ms` from Shanghai, CN
83.254.135.165	AS1257 Tele2 Sverige AB	`9.15ms` from Skanderborg, DK
66.24.119.213	AS11351 Charter Communications Inc	`17.21ms` from Chicago, US
134.68.64.21	AS87 Indiana University	`3.99ms` from Chicago, US
97.134.226.165	AS6167 Verizon Business	`15.78ms` from Dallas, US
130.174.33.5	AS3360 DXC US Latin America Corporation	`1.35ms` from Dublin, IE
83.255.74.245	AS1257 Tele2 Sverige AB	`14.12ms` from Goeteborg, SE
156.242.173.101	AS132839 POWER LINE DATACENTER	`1.05ms` from Hong Kong, HK
186.54.33.229	AS6057 Administracion Nacional de Telecomunicaciones	`1.65ms` from Montevideo, UY
77.41.28.21	AS8615 "Central Telegraph" Public Joint-stock Company	`2.40ms` from Moscow, RU

Traceroute

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

traceroute -a -n -q1 -f4 203.158.44.51

traceroute to 203.158.44.51 (203.158.44.51): 64 hops max, 52 byte packets

4 [] 37.19.192.229 171.544 ms

5 [AS9942] 203.221.3.29 133.074 ms

6 [AS7545] 203.158.44.51 144.061 ms

Measurement taken from

IPinfo ProbeNet in Tokyo, JP

On March 20th 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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