203.10.40.0/21

AS137188 · Australian Catholic University Limited

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Summary

Country	Australia
Domain	acu.edu.au
ASN	AS137188
Registry	APNIC
ID	ACU-AU

WHOIS Details

inetnum:        203.10.40.0 - 203.10.47.255
netname:        ACU-AU
descr:          Australian Catholic University Limited
country:        AU
org:            ORG-ACU1-AP
admin-c:        ACUA1-AP
tech-c:         ACUA1-AP
abuse-c:        AA1540-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-ACU-AU
mnt-routes:     MAINT-ACU-AU
mnt-irt:        IRT-ACU-AU
last-modified:  2020-10-26T09:16:20Z
source:         APNIC

irt:            IRT-ACU-AU
address:        PO Box 968, North Sydney NSW 2059
e-mail:         NetAdmin@acu.edu.au
abuse-mailbox:  NetAdmin@acu.edu.au
admin-c:        ACUA1-AP
tech-c:         ACUA1-AP
auth:           # Filtered
remarks:        netadmin@acu.edu.au was validated on 2025-08-07
mnt-by:         MAINT-ACU-AU
last-modified:  2025-11-18T00:32:01Z
source:         APNIC

organisation:   ORG-ACU1-AP
org-name:       Australian Catholic University Limited
org-type:       LIR
country:        AU
address:        Level 2, 115 Victoria Parade
phone:          +61-3-9953 3329
e-mail:         netadmin@acu.edu.au
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2025-08-25T05:33:35Z
source:         APNIC

role:           ABUSE ACUAU
country:        ZZ
address:        PO Box 968, North Sydney NSW 2059
phone:          +000000000
e-mail:         NetAdmin@acu.edu.au
admin-c:        ACUA1-AP
tech-c:         ACUA1-AP
nic-hdl:        AA1540-AP
remarks:        Generated from irt object IRT-ACU-AU
remarks:        netadmin@acu.edu.au was validated on 2025-08-07
abuse-mailbox:  NetAdmin@acu.edu.au
mnt-by:         APNIC-ABUSE
last-modified:  2025-08-07T23:28:07Z
source:         APNIC

role:           Australian Catholic University administrator
address:        PO Box 968, North Sydney NSW 2059
country:        AU
phone:          +61-3-9953 3329
e-mail:         abuse@acu.edu.au
admin-c:        ACUA1-AP
tech-c:         ACUA1-AP
nic-hdl:        ACUA1-AP
mnt-by:         MAINT-ACU-AU
last-modified:  2025-08-25T05:33:36Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 203.10.0.0/16

Range	ASN	Company	Num of IPs
203.10.16.0/21	AS18206	P&O Global Technologies Sdn Bhd,	2,048
203.10.72.0/23	AS7637	State Library of Victoria	512
203.10.100.0/23	AS137991	Lifeway Singapore Pte. Ltd.	512
203.10.99.0/24	AS137409	GSL Networks Pty LTD - Tokyo	256
203.10.122.0/24	AS13852	Peppermill Casinos, Inc.	256
203.10.59.0/24	AS17807	State Library of Queensland	256
203.10.78.0/24	AS267	Matthew Nichols	256
203.10.0.0/24	AS2764	Kent Trust T A Spyda Investments Pty Ltd t/a Concurrent Reality	256
203.10.77.0/24	AS38195	SUPERLOOP (AUSTRALIA) PTY LTD	256
203.10.3.0/24	AS45665	EdIT Counsel	256
203.10.1.0/24	AS4739	iiNet Limited	256
203.10.110.0/24	AS4739	iiNet Limited	256
203.10.76.0/24	AS55803	PC Users Group (ACT) Inc.	256
203.10.58.0/24	AS56109	Everworks Solutions (M) Sdn Bhd	256
203.10.124.0/24	AS9266	Fiveways International Limited	256
203.10.89.0/24	AS9313	Network Technology (AUST) P/L	256
203.10.121.0/24	AS9650	Department of Education	256
203.10.96.0/24	AS137409	GSL Networks Pty LTD - Los Angeles	256
203.10.97.0/24	AS137409	GSL Networks Pty LTD - Los Angeles	256
203.10.98.0/24	AS137409	GSL Networks Pty LTD - Tokyo	256

Hosted domains

There are no domains currently hosted on this ASN.

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

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

IP Address	ASN	Details
203.10.43.173	AS137188 Australian Catholic University Limited	`5.27ms` from Sydney, AU
203.10.44.2	AS137188 Australian Catholic University Limited	`0.53ms` from Melbourne, AU
203.10.45.211	AS137188 Australian Catholic University Limited	`14.90ms` from Melbourne, AU
203.10.41.177	AS137188 Australian Catholic University Limited	`14.98ms` 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
74.209.232.69	AS13767 DataBank Holdings, Ltd.	`0.56ms` from Ashburn, US
131.250.43.165	AS668 United States Department of Defense (DoD)	`2.66ms` from Ashburn, US
162.79.16.37	AS4155 USDA	`1.58ms` from Chicago, US
89.28.12.165	AS31252 StarNet Solutii SRL	`0.22ms` from Chisinau, MD
163.11.13.37	AS600 OARnet	`4.93ms` from Columbus, US
14.236.128.181	AS45899 VNPT Corp	`4.27ms` from Da Nang, VN
93.205.134.197	AS3320 Deutsche Telekom AG	`4.77ms` from Frankfurt am Main, DE
20.240.185.149	AS8075 Microsoft Corporation	`0.29ms` from Gaevle, SE
203.78.132.21	AS9304 HGC Global Communications Limited	`1.35ms` from Hong Kong, HK
89.218.239.213	AS9198 JSC Kazakhtelecom	`9.70ms` from Karagandy, KZ
90.212.185.37	AS5607 Sky UK Limited	`3.43ms` from London, GB
97.221.183.213	AS6167 Verizon Business	`17.40ms` from Miami, US
104.63.82.245	AS7018 AT&T Enterprises, LLC	`2.58ms` from Miami, US
154.6.23.101	AS64286 LogicWeb Inc.	`1.67ms` from New York City, US
144.123.157.245	AS4134 CHINANET-BACKBONE	`6.28ms` from Qingdao, CN
83.255.194.197	AS1257 Tele2 Sverige AB	`7.84ms` from Stockholm, SE
46.255.65.213	AS31203 Sharq Telekom CJSC	`0.75ms` from Tashkent, UZ
27.34.146.37	AS9597 KDDI Web Communications Inc.	`0.52ms` from Tokyo, JP
216.83.9.21	AS394085 Think On, Inc.	`0.33ms` from Toronto, CA
192.186.98.213	AS7992 Cogeco Connexion Inc.	`13.48ms` from Toronto, CA
77.163.87.197	AS1136 KPN B.V.	`1.54ms` from Amsterdam, NL
4.180.137.53	AS8075 Microsoft Corporation	`0.20ms` from Amsterdam, NL
34.211.144.165	AS16509 Amazon.com, Inc.	`0.28ms` from Boardman, US
84.1.112.117	AS5483 Magyar Telekom Plc.	`0.61ms` from Budapest, HU
173.95.102.69	AS11426 Charter Communications Inc	`3.01ms` from Charlotte, US

Traceroute

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

traceroute -a -n -q1 -f2 -m8 203.10.41.255

traceroute to 203.10.41.255 (203.10.41.255): 8 hops max, 52 byte packets

2 [AS15169] 192.178.97.144 288.2 ms

3 *

4 [AS7575] 113.197.14.158 284.39 ms

5 [AS7575] 138.44.68.66 285.612 ms

6 *

7 *

8 *

Measurement taken from

IPinfo ProbeNet in Hamina, FI

On February 7th 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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