203.15.172.0/23

AS9336 · XYZ Telecom Pty Ltd

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Summary

Country	Australia
Domain	stcaths.nsw.edu.au
ASN	AS9336
Registry	APNIC
ID	STCS-AU

WHOIS Details

inetnum:        203.15.172.0 - 203.15.173.255
netname:        STCS-AU
descr:          St Catherine's School
country:        AU
org:            ORG-SCS3-AP
admin-c:        SCSA4-AP
tech-c:         SCSA4-AP
abuse-c:        AS2127-AP
mnt-by:         APNIC-HM
mnt-routes:     MAINT-AU-SCS
mnt-irt:        IRT-SCS-NON-AU
status:         ASSIGNED PORTABLE
remarks:        -+-+-+-+-+-+-+-+-+-+-+-++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
remarks:        To report network abuse, please contact the IRT
remarks:        For troubleshooting, please contact tech-c and admin-c
remarks:        For assistance, please contact the APNIC Helpdesk
remarks:        -+-+-+-+-+-+-+-+-+-+-+-++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
last-modified:  2023-01-09T02:05:32Z
source:         APNIC

irt:            IRT-SCS-NON-AU
address:        St Catherine's School
address:        17 Heyington Place
address:        Toorak
address:        VIC 3142
e-mail:         vjayachandran@stcatherines.net.au
abuse-mailbox:  vjayachandran@stcatherines.net.au
admin-c:        SCSA4-AP
tech-c:         SCSA4-AP
auth:           # Filtered
remarks:        vjayachandran@stcatherines.net.au was validated on 2025-08-07
mnt-by:         MAINT-AU-SCS
last-modified:  2025-11-18T00:30:10Z
source:         APNIC

organisation:   ORG-SCS3-AP
org-name:       St. Catherine's School
org-type:       LIR
country:        AU
address:        17 Heyington Place
phone:          +61 3 9822 1285
fax-no:         +61 3 9822 7595
e-mail:         vjayachandran@stcatherines.net.au
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:15:54Z
source:         APNIC

role:           ABUSE SCSNONAU
country:        ZZ
address:        St Catherine's School
address:        17 Heyington Place
address:        Toorak
address:        VIC 3142
phone:          +000000000
e-mail:         vjayachandran@stcatherines.net.au
admin-c:        SCSA4-AP
tech-c:         SCSA4-AP
nic-hdl:        AS2127-AP
remarks:        Generated from irt object IRT-SCS-NON-AU
remarks:        vjayachandran@stcatherines.net.au was validated on 2025-08-07
abuse-mailbox:  vjayachandran@stcatherines.net.au
mnt-by:         APNIC-ABUSE
last-modified:  2025-08-07T23:09:59Z
source:         APNIC

role:           St Catherines School administrator
address:        17 Heyington Place
address:        Toorak
address:        VIC 3142
country:        AU
phone:          +61 3 9822 1285
e-mail:         vjayachandran@stcatherines.net.au
admin-c:        SCSA4-AP
tech-c:         SCSA4-AP
nic-hdl:        SCSA4-AP
mnt-by:         MAINT-AU-SCS
last-modified:  2023-01-09T02:00:45Z
source:         APNIC

route:          203.15.172.0/23
origin:         AS9336
descr:          St. Catherine's School 17 Heyington Place
mnt-by:         MAINT-AU-SCS
last-modified:  2023-03-23T07:01:49Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 203.15.0.0/16

Range	ASN	Company	Num of IPs
203.15.32.0/19	AS24436	UQConnect	8,192
203.15.0.0/20	AS133774	CHINANET Guangdong province network	4,096
203.15.96.0/21	AS7550	Special Broadcasting Service	2,048
203.15.160.0/21	AS703	Verizon Australia Pty Limited	2,048
203.15.124.0/22	AS9650	CITEC	1,024
203.15.144.0/22	AS18361	Australian Stock Exchange	1,024
203.15.120.0/23	AS137409	GSL Networks Pty Ltd	512
203.15.134.0/23	AS9313	Somerset College Limited	512
203.15.18.0/23	AS151626	INDIAN CYBERCRIME COORDINATION CENTRE	512
203.15.254.0/24	AS1221	ANDVIV Pty. Ltd.	256
203.15.122.0/24	AS24433	Central Queensland University	256
203.15.244.0/24	AS38170	Albury Local Internet Pty Ltd	256
203.15.155.0/24	AS400371	PUEBLO OF LAGUNA UTILITY AUTHORITY	256
203.15.107.0/24	AS4739	ADS (ANALOG & DIGITAL SYSTEMS)	256
203.15.226.0/24	AS4822	National Library of Australia	256
203.15.70.0/24	AS4826	Infoxchange	256
203.15.111.0/24	AS7545	Matthew Green	256
203.15.109.0/24	AS7575	The Commonwealth of Australia	256
203.15.118.0/24	AS23764	Chinatelecomglobal Office Blocks	256
203.15.68.0/24	AS1221	Telstra Limited	256
203.15.65.0/24	AS13335	University of Sydney	256
203.15.150.0/24	AS134094	SERVERFIELD CO., LTD.	256
203.15.120.0/24	AS137409	GSL Networks Pty LTD	256
203.15.121.0/24	AS137409	GSL Networks Pty LTD	256
203.15.141.0/24	AS139207	Web In A Box	256
203.15.142.0/24	AS139890	Transaction Solutions Limited	256
203.15.64.0/24	AS18165	ResMed Pty Ltd	256
203.15.117.0/24	AS23764	Chinatelecomglobal Office Blocks	256

Hosted domains

There are 2 domain names hosted across 2 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
203.15.172.127	stcatherines.vic.edu.au	1
203.15.172.129	mystcatherines.net.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

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

IP Address	ASN	Details
203.15.172.1	AS9336 XYZ Telecom Pty Ltd	`0.28ms` from Melbourne, AU
203.15.173.1	AS9336 XYZ Telecom Pty Ltd	`0.29ms` 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
77.238.229.119	AS216071 SERVERS TECH FZCO	`0.57ms` from Amsterdam, NL
73.82.4.199	AS7922 Comcast Cable Communications, LLC	`5.14ms` from Atlanta, US
79.213.166.215	AS3320 Deutsche Telekom AG	`1.90ms` from Berlin, DE
44.233.56.215	AS16509 Amazon.com, Inc.	`0.20ms` from Boardman, US
67.225.89.87	AS803 Saskatchewan Telecommunications	`19.68ms` from Des Moines, US
79.254.22.103	AS3320 Deutsche Telekom AG	`8.27ms` from Frankfurt am Main, DE
171.254.85.103	AS7552 Viettel Group	`2.03ms` from Hanoi, VN
124.197.181.231	AS9971 SK Broadband Co Ltd	`1.57ms` from Incheon, KR
93.187.217.71	AS54825 Packet Host, Inc.	`0.85ms` from Los Angeles, US
5.228.131.119	AS42610 PJSC Rostelecom	`1.54ms` from Moscow, RU
107.145.223.23	AS33363 Charter Communications, Inc	`9.91ms` from Orlando, US
36.224.47.71	AS3462 Data Communication Business Group	`1.40ms` from Taipei, TW
113.231.225.119	AS4837 CHINA UNICOM China169 Backbone	`5.47ms` from Tieling, CN
60.156.99.23	AS17676 SoftBank Corp.	`3.50ms` from Tokyo, JP
131.121.65.151	AS668 United States Department of Defense (DoD)	`2.68ms` from Ashburn, US
68.94.120.151	AS7018 AT&T Enterprises, LLC	`3.75ms` from Atlanta, US
165.166.126.71	AS14480 County of Orangeburg	`4.39ms` from Charlotte, US
66.49.95.103	AS7029 Windstream Communications LLC	`0.49ms` from Chicago, US
87.165.159.7	AS3320 Deutsche Telekom AG	`8.12ms` from Frankfurt am Main, DE
70.252.6.215	AS7018 AT&T Enterprises, LLC	`1.68ms` from Houston, US
76.143.202.167	AS7922 Comcast Cable Communications, LLC	`5.63ms` from Houston, US
105.225.72.231	AS37457 Telkom SA Ltd.	`18.44ms` from Johannesburg, ZA
123.244.92.39	AS4134 CHINANET-BACKBONE	`5.52ms` from Liaoyang, CN
95.163.133.7	AS47764 LLC VK	`0.97ms` from Moscow, RU
27.196.125.55	AS4837 CHINA UNICOM China169 Backbone	`8.13ms` from Qingdao, CN

Traceroute

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

traceroute -a -n -q1 -f2 203.15.172.1

traceroute to 203.15.172.1 (203.15.172.1): 64 hops max, 52 byte packets

2 [AS136557] 103.216.222.83 0.081 ms

3 [AS136557] 103.216.222.81 0.085 ms

4 [AS136557] 103.216.222.78 0.206 ms

5 [AS136557] 103.216.222.79 0.107 ms

6 [] 218.100.78.44 0.322 ms

7 [AS9336] 202.90.50.45 0.318 ms

8 [AS9336] 203.15.172.1 0.372 ms

Measurement taken from

IPinfo ProbeNet in Melbourne, AU

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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