203.11.4.0/24

AS1221 · Telstra Limited

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Summary

Country	Australia
Domain	defence.gov.au
ASN	AS1221
Registry	APNIC
ID	AUSDEFENCE

WHOIS Details

inetnum:        203.11.0.0 - 203.11.63.255
netname:        AUSDEFENCE
descr:          Australian Department of Defence
descr:          Bonshaw Rd, HMAS Harman
descr:          Canberra ACT 2600
country:        AU
org:            ORG-ADO1-AP
admin-c:        FMGR1-AP
tech-c:         DHM2-AP
abuse-c:        AA2247-AP
status:         ALLOCATED PORTABLE
mnt-by:         APNIC-HM
mnt-lower:      MAINT-AU-DEFENCE
mnt-routes:     MAINT-AU-DEFENCE
mnt-irt:        IRT-AUS-DEFENCE-AU
last-modified:  2021-01-15T01:28:24Z
source:         APNIC

irt:            IRT-AUS-DEFENCE-AU
address:        Department of Defence
address:        Bonshaw Rd, HMAS Harman
address:        Cannberra, ACT 2600
address:        Australia
e-mail:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        RJ190-AP
tech-c:         RJ190-AP
auth:           # Filtered
remarks:        [email protected] was validated on 2025-09-17
mnt-by:         MAINT-AU-DEF-MGMTCONFIG
last-modified:  2025-11-18T00:27:25Z
source:         APNIC

organisation:   ORG-ADO1-AP
org-name:       Australian Defence Organisation
org-type:       LIR
country:        AU
address:        Anzac Park West
address:        PO Box 7953
phone:          +61-2-6265-7647
fax-no:         +61-2-6265-53840
e-mail:         [email protected]
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:15:17Z
source:         APNIC

role:           ABUSE AUSDEFENCEAU
country:        ZZ
address:        Department of Defence
address:        Bonshaw Rd, HMAS Harman
address:        Cannberra, ACT 2600
address:        Australia
phone:          +000000000
e-mail:         [email protected]
admin-c:        RJ190-AP
tech-c:         RJ190-AP
nic-hdl:        AA2247-AP
remarks:        Generated from irt object IRT-AUS-DEFENCE-AU
remarks:        [email protected] was validated on 2025-09-17
abuse-mailbox:  [email protected]
mnt-by:         APNIC-ABUSE
last-modified:  2025-09-17T02:15:21Z
source:         APNIC

person:         ADF Hostmaster
address:        Australian Department of Defence
address:        109 Kent St, Deakin
address:        Canberra ACT 2600
country:        AU
phone:          +61 02 6265 8598
e-mail:         [email protected]
nic-hdl:        DHM2-AP
mnt-by:         MAINT-AU-DEFENCE
last-modified:  2008-09-04T07:29:32Z
source:         APNIC

person:         ADF Firewall Manager
address:        Australian Department of Defence
address:        109 Kent St, Deakin
address:        Canberra ACT 2600
country:        AU
phone:          +61 02 6265 8598
fax-no:         +61 02 6265 8924
e-mail:         [email protected]
nic-hdl:        FMGR1-AP
mnt-by:         MAINT-AU-DEFENCE
last-modified:  2008-09-04T07:29:32Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 203.11.0.0/16

Range	ASN	Company	Num of IPs
203.11.66.0/23	AS7575	Methodist Ladies' College	512
203.11.134.0/24	AS10794	BAC Singapore	256
203.11.125.0/24	AS134096	Southern New South Wales Local Health District	256
203.11.108.0/24	AS136518	Department of Planning, Lands and Heritage	256
203.11.118.0/24	AS136518	Department of Mines And Petroleum	256
203.11.119.0/24	AS136518	Department of Commerce (WA)	256
203.11.121.0/24	AS136518	Western Australian Land Information Authority	256
203.11.73.0/24	AS137582	Graphica Software	256
203.11.81.0/24	AS139661	Toll Transport Pty Ltd	256
203.11.91.0/24	AS154154	PT BORNEO FIBER TEKNOLOGI	256
203.11.220.0/24	AS19625	Andrew John Howard	256
203.11.72.0/24	AS401199	TenSpire Network	256
203.11.218.0/24	AS45665	EdIT Counsel	256
203.11.75.0/24	AS45665	EdIT Counsel	256
203.11.69.0/24	AS4826	Micromine Australia Pty Ltd	256
203.11.74.0/24	AS56117	209/1	256
203.11.65.0/24	AS58895	Style Of Global, IT Support and Services Company	256
203.11.90.0/24	AS703	SE Network Access	256
203.11.80.0/24	AS7575	WILLIAM ANGLISS INSTITUTE OF TAFE	256
203.11.114.0/24	AS8943	Australian Public Access Network Association	256
203.11.130.0/24	AS10794	BAC Mumbai, India	256
203.11.140.0/24	AS9893	Cenitex	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

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
20.54.209.24	AS8075 Microsoft Corporation	`0.22ms` from Amsterdam, NL
73.106.90.168	AS7922 Comcast Cable Communications, LLC	`4.50ms` from Atlanta, US
20.62.114.56	AS8075 Microsoft Corporation	`0.22ms` from Boydton, US
74.46.31.216	AS5650 Frontier Communications of America, Inc.	`9.91ms` from Chicago, US
24.231.18.184	AS40098 Community Antenna Service, Inc.	`10.54ms` from Columbus, US
191.179.185.232	AS28573 Claro NXT Telecomunicacoes Ltda	`16.45ms` from Curitiba, BR
173.90.78.216	AS10796 Charter Communications Inc	`14.76ms` from Flint, US
116.108.163.120	AS7552 Viettel Group	`1.03ms` from Ho Chi Minh City, VN
170.168.156.88	AS44559 IT HOSTLINE LTD	`0.19ms` from Madrid, ES
126.220.193.248	AS17676 SoftBank Corp.	`3.43ms` from Osaka, JP
90.70.233.184	AS3215 Orange S.A.	`7.41ms` from Paris, FR
90.108.154.40	AS3215 Orange S.A.	`5.52ms` from Paris, FR
44.211.43.184	AS14618 Amazon.com, Inc.	`0.35ms` from Reston, US
177.65.37.248	AS28573 Claro NXT Telecomunicacoes Ltda	`5.57ms` from Rio de Janeiro, BR
87.228.26.136	AS49505 JSC Selectel	`0.96ms` from Saint Petersburg, RU
120.56.198.168	AS9829 National Internet Backbone	`14.24ms` from Saint Thomas Mount, IN
179.217.93.8	AS28573 Claro NXT Telecomunicacoes Ltda	`6.72ms` from Sao Paulo, BR
211.222.254.200	AS4766 Korea Telecom	`1.46ms` from Seoul, KR
120.233.3.216	AS56040 China Mobile communications corporation	`4.27ms` from Shenzhen, CN
1.33.105.8	AS2514 NTT PC Communications, Inc.	`2.05ms` from Tokyo, JP
222.140.194.136	AS4837 CHINA UNICOM China169 Backbone	`4.10ms` from Zhengzhou, CN
49.232.34.152	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.79ms` from Beijing, CN
14.119.105.104	AS4134 CHINANET-BACKBONE	`2.37ms` from Guangzhou, CN
196.34.250.232	AS3741 Dimension Data	`0.45ms` from Johannesburg, ZA
147.148.104.88	AS2856 British Telecommunications PLC	`6.49ms` from London, GB

Traceroute

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

traceroute -a -n -q1 -m16 203.11.4.126

traceroute to 203.11.4.126 (203.11.4.126): 16 hops max, 52 byte packets

1 [AS15169] 66.249.94.19 152.62 ms

2 [AS15169] 192.178.97.92 150.714 ms

3 *

4 [AS1221] 203.50.11.172 152.941 ms

5 *

6 [AS1221] 203.50.13.125 164.732 ms

7 *

8 *

9 [AS1221] 203.50.6.189 202.484 ms

10 *

11 [AS1221] 203.50.6.190 201.689 ms

12 *

13 [AS1221] 203.50.6.190 200.755 ms

14 *

15 *

16 *

Measurement taken from

IPinfo ProbeNet in Salt Lake City, US

On December 14th 2025

What are IP address ranges?

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