203.20.238.0/24

AS1221 · Telstra Limited

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Summary

Country	Australia
Domain	adtsecurity.com.au
ASN	AS1221
Registry	APNIC
ID	ASGPL-AU

WHOIS Details

inetnum:        203.20.238.0 - 203.20.239.255
netname:        ASGPL-AU
descr:          ADT Security Group PTY Ltd
country:        AU
org:            ORG-ASGP1-AP
admin-c:        ASGP1-AP
tech-c:         ASGP1-AP
abuse-c:        AA2950-AP
status:         ASSIGNED 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-routes:     MAINT-ASGPL-AU
mnt-irt:        IRT-ASGPL-AU
last-modified:  2025-09-25T04:22:05Z
source:         APNIC

irt:            IRT-ASGPL-AU
address:        38 South Street, Rydalmere NSW 2116
e-mail:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        ASGP1-AP
tech-c:         ASGP1-AP
auth:           # Filtered
mnt-by:         MAINT-ASGPL-AU
last-modified:  2025-11-18T00:38:32Z
source:         APNIC

organisation:   ORG-ASGP1-AP
org-name:       ADT Security Group PTY Ltd
org-type:       LIR
country:        AU
address:        38 South Street
phone:          +61408081247
e-mail:         [email protected]
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2025-09-03T13:35:45Z
source:         APNIC

role:           ABUSE ASGPLAU
country:        ZZ
address:        38 South Street, Rydalmere NSW 2116
phone:          +000000000
e-mail:         [email protected]
admin-c:        ASGP1-AP
tech-c:         ASGP1-AP
nic-hdl:        AA2950-AP
remarks:        Generated from irt object IRT-ASGPL-AU
abuse-mailbox:  [email protected]
mnt-by:         APNIC-ABUSE
last-modified:  2025-09-25T04:22:05Z
source:         APNIC

role:           ADT Security Group PTY Ltd administrator
address:        38 South Street, Rydalmere NSW 2116
country:        AU
phone:          +61408081247
e-mail:         [email protected]
admin-c:        ASGP1-AP
tech-c:         ASGP1-AP
nic-hdl:        ASGP1-AP
mnt-by:         MAINT-ASGPL-AU
last-modified:  2025-09-23T01:31:55Z
source:         APNIC

route:          203.20.238.0/23
origin:         AS1221
descr:          ADT Security Group PTY Ltd
mnt-by:         MAINT-ASGPL-AU
last-modified:  2025-09-25T04:26:15Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 203.20.0.0/16

Range	ASN	Company	Num of IPs
203.20.160.0/19	AS37998	St. Vincents and Mater Health Sydney Pty Ltd	8,192
203.20.32.0/21	AS133612	VODAFONE AUSTRALIA PTY LIMITED	2,048
203.20.28.0/22	AS133612	VODAFONE AUSTRALIA PTY LIMITED	1,024
203.20.102.0/23	AS7585	Allen Bolderoff	512
203.20.226.0/23	AS7600	Digital Enterprise Solutions Australia	512
203.20.54.0/23	AS38012	Downer EDI Limited	512
203.20.100.0/23	AS38809	Thales Australia	512
203.20.74.0/23	AS131248	CANL	512
203.20.244.0/23	AS24436	Christian Outreach College	512
203.20.228.0/23	AS4739	iiNet Limited	512
203.20.140.0/24	AS23764	Chinatelecomglobal Office Blocks	256
203.20.141.0/24	AS23764	Chinatelecom Global network	256
203.20.142.0/24	AS23764	Chinatelecomglobal Office Blocks	256
203.20.143.0/24	AS23764	Chinatelecom Global network	256
203.20.51.0/24	AS23764	China Telecom Global Limited	256
203.20.86.0/24	AS264756	Cable Television Satelital SRL	256
203.20.114.0/24	AS2764	Sensation Internet Services	256
203.20.125.0/24	AS38195	Intuit Technologies Pty Ltd	256
203.20.148.0/24	AS38858	ROCKDALE CITY LIBRARY	256
203.20.247.0/24	AS7600	Digital Enterprise Solutions Australia	256
203.20.240.0/24	AS7703	Westway Nominees Pty Ltd t/a Bekkers	256
203.20.241.0/24	AS7716	TCR Holdings Limted.	256
203.20.50.0/24	AS9328	Department of Fisheries,	256
203.20.43.0/24	AS1221	Dalrymple Bay Coal Terminal	256
203.20.16.0/24	AS9461	Netcore Pty Ltd	256
203.20.87.0/24	AS1221	Arquebus Pty Limited	256
203.20.63.0/24	AS135553	VC Telecoms Sdn. Bhd.	256
203.20.94.0/24	AS141749	Department of Local Government, Sport and Cultural Industries	256
203.20.116.0/24	AS151617	SYNCHRONY GLOBAL SERVICES PHILIPPINES INC.	256
203.20.73.0/24	AS154179	Kiatnakin Phatra Securities Public Company Limited	256
203.20.42.0/24	AS154180	RNDS Network	256
203.20.81.0/24	AS17477	67 High St	256
203.20.62.0/24	AS18111	Bytecard PTY LTD	256
203.20.60.0/24	AS18390	Ai Tel Pty Ltd	256

Hosted domains

There are 6 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
203.20.238.149	tycoservices.co.nz	5
203.20.238.199	adtsmartsecure.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

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

IP Address	ASN	Details
203.20.238.1	AS1221 Telstra Limited	`0.89ms` 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
20.13.118.24	AS8075 Microsoft Corporation	`0.24ms` from Amsterdam, NL
20.126.213.136	AS8075 Microsoft Corporation	`0.24ms` from Amsterdam, NL
68.62.205.120	AS7922 Comcast Cable Communications, LLC	`11.27ms` from Atlanta, US
80.144.8.8	AS3320 Deutsche Telekom AG	`2.49ms` from Berlin, DE
106.223.223.8	AS45609 Bharti Airtel Ltd. AS for GPRS Service	`5.80ms` from Delhi, IN
194.73.165.248	AS2856 British Telecommunications PLC	`3.49ms` from London, GB
97.182.230.136	AS6167 Verizon Business	`14.97ms` from Los Angeles, US
83.201.58.8	AS3215 Orange S.A.	`19.98ms` from Marseille, FR
87.252.248.168	AS42772 Unitary enterprise A1	`4.39ms` from Minsk, BY
176.194.205.40	AS12714 PJSC MegaFon	`10.16ms` from Moscow, RU
117.24.153.216	AS4134 CHINANET-BACKBONE	`12.61ms` from Nanchang, CN
68.173.148.216	AS12271 Charter Communications Inc	`3.60ms` from New York City, US
24.186.209.136	AS6128 Cablevision Systems Corp.	`3.25ms` from New York City, US
75.45.63.72	AS7018 AT&T Enterprises, LLC	`2.41ms` from Atlanta, US
81.201.153.120	AS16205 DSI GmbH Daten Service Informationssysteme	`4.11ms` from Berlin, DE
93.226.251.40	AS3320 Deutsche Telekom AG	`5.83ms` from Berlin, DE
104.199.95.72	AS396982 Google LLC	`0.14ms` from Brussels, BE
52.239.149.40	AS8075 Microsoft Corporation	`0.84ms` from Chicago, US
23.194.181.232	AS16625 Akamai Technologies, Inc.	`0.09ms` from Fortaleza, BR
84.146.47.88	AS3320 Deutsche Telekom AG	`7.33ms` from Frankfurt am Main, DE
124.105.40.216	AS9299 Philippine Long Distance Telephone Company	`4.61ms` from Manila, PH
116.9.76.184	AS4134 CHINANET-BACKBONE	`5.25ms` from Nanning, CN
93.201.127.184	AS3320 Deutsche Telekom AG	`5.09ms` from Nuernberg, DE
60.106.143.136	AS17676 SoftBank Corp.	`3.66ms` from Osaka, JP
89.185.39.152	AS8426 ClaraNET LTD	`1.30ms` from Paris, FR

Traceroute

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

traceroute -a -n -q1 -f8 203.20.238.1

traceroute to 203.20.238.1 (203.20.238.1): 64 hops max, 52 byte packets

8 [AS1221] 144.130.164.245 1.128 ms

9 [AS1221] 203.20.238.1 0.934 ms

Measurement taken from

IPinfo ProbeNet in Sydney, AU

On January 10th 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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