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 2026-02-10
mnt-by:         MAINT-ACU-AU
last-modified:  2026-02-25T03:23:54Z
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 2026-02-10
abuse-mailbox:  NetAdmin@acu.edu.au
mnt-by:         APNIC-ABUSE
last-modified:  2026-02-10T21:56:35Z
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

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Useful for Cybersecurity

Read more

Pingable IPs

10 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	`4.64ms` from Sydney, AU
203.10.41.177	AS137188 Australian Catholic University Limited	`15.88ms` from Melbourne, AU
203.10.44.255	AS137188 Australian Catholic University Limited	`0.62ms` from Melbourne, AU
203.10.47.2	AS137188 Australian Catholic University Limited	`4.30ms` from Sydney, AU
203.10.45.240	AS137188 Australian Catholic University Limited	`15.44ms` 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
3.89.141.21	AS14618 Amazon.com, Inc.	`0.54ms` from Ashburn, US
51.222.169.197	AS16276 OVH SAS	`0.06ms` from Beauharnois, CA
101.23.251.69	AS4837 CHINA UNICOM China169 Backbone	`10.06ms` from Beijing, CN
222.161.223.133	AS4837 CHINA UNICOM China169 Backbone	`0.33ms` from Changchun, CN
139.155.231.229	AS45090 Shenzhen Tencent Computer Systems Company Limited	`0.74ms` from Chengdu, CN
113.176.120.5	AS45899 VNPT Corp	`4.68ms` from Da Nang, VN
74.63.186.101	AS13649 Flexential Colorado Corp.	`0.43ms` from Denver, US
63.32.112.37	AS16509 Amazon.com, Inc.	`0.63ms` from Dublin, IE
189.84.123.133	AS28368 SOBRALNET SERVICOS E TELECOMUNICACOES LTDA - ME	`0.30ms` from Fortaleza, BR
89.219.22.229	AS41007 CTC ASTANA LTD	`5.30ms` from Karagandy, KZ
34.138.4.133	AS396982 Google LLC	`0.15ms` from Moncks Corner, US
167.44.7.21	AS2665 Shared Services Canada	`5.52ms` from Montreal, CA
58.146.209.181	AS9698 LG HelloVision Corp.	`5.09ms` from Seoul, KR
159.89.118.213	AS14061 DigitalOcean, LLC	`0.38ms` from Toronto, CA
213.33.3.5	AS8447 A1 Telekom Austria AG	`11.54ms` from Vienna, AT
81.205.199.149	AS1136 KPN B.V.	`2.39ms` from Amsterdam, NL
18.205.100.101	AS14618 Amazon.com, Inc.	`0.46ms` from Ashburn, US
54.172.111.197	AS14618 Amazon.com, Inc.	`0.55ms` from Ashburn, US
97.166.84.37	AS6167 Verizon Business	`16.54ms` from Atlanta, US
116.131.32.5	AS4837 CHINA UNICOM China169 Backbone	`9.13ms` from Beijing, CN
34.220.184.101	AS16509 Amazon.com, Inc.	`0.32ms` from Boardman, US
14.165.62.133	AS45899 VNPT Corp	`2.51ms` from Da Nang, VN
142.147.164.21	AS62874 Web2Objects LLC	`0.27ms` from Dallas, US
66.6.160.37	AS11696 Fusion, LLC	`3.93ms` from Detroit, US
124.158.160.37	AS9341 PT INDONESIA COMNETS PLUS	`1.88ms` from Jakarta, ID

Traceroute

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

traceroute -a -n -q1 -f5 -m9 203.10.42.163

traceroute to 203.10.42.163 (203.10.42.163): 9 hops max, 52 byte packets

5 [AS56911] 185.169.236.252 79.741 ms

6 [AS2128] 185.6.36.141 48.77 ms

7 *

8 *

9 *

Measurement taken from

IPinfo ProbeNet in Crotone, IT

On March 13th 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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