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

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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
23.253.157.24	AS27357 Rackspace Hosting	`0.33ms` from Ashburn, US
143.110.179.120	AS14061 DigitalOcean, LLC	`0.32ms` from Bengaluru, IN
74.46.31.216	AS5650 Frontier Communications of America, Inc.	`9.97ms` from Chicago, US
97.185.10.120	AS6167 Verizon Business	`13.86ms` from Chicago, US
113.178.62.104	AS45899 VNPT Corp	`1.84ms` from Hanoi, VN
220.121.75.216	AS4766 Korea Telecom	`0.78ms` from Incheon, KR
80.44.218.120	AS13285 TalkTalk Communications Limited	`3.81ms` from Manchester, GB
153.202.56.136	AS4713 NTT DOCOMO BUSINESS,Inc.	`5.14ms` from Osaka, JP
49.187.226.120	AS4804 Microplex PTY LTD	`10.01ms` from Sydney, AU
89.228.48.72	AS21021 Multimedia Polska Sp. z o.o.	`13.24ms` from Warsaw, PL
4.156.212.40	AS8075 Microsoft Corporation	`0.34ms` from Ashburn, US
110.251.169.232	AS4837 CHINA UNICOM China169 Backbone	`5.59ms` from Beijing, CN
103.49.204.56	AS133951 Omega Healthcare Management Services Private Limited	`1.36ms` from Bengaluru, IN
152.203.219.88	AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC	`3.45ms` from Bogotá, CO
20.233.10.24	AS8075 Microsoft Corporation	`0.92ms` from Dubai, AE
47.242.70.8	AS45102 Alibaba (US) Technology Co., Ltd.	`0.56ms` from Hong Kong, HK
195.99.84.104	AS2856 British Telecommunications PLC	`0.82ms` from London, GB
180.114.65.168	AS4134 CHINANET-BACKBONE	`4.70ms` from Nanjing, CN
79.202.150.56	AS3320 Deutsche Telekom AG	`5.71ms` from Nuernberg, DE
125.203.81.248	AS4713 NTT DOCOMO BUSINESS,Inc.	`17.25ms` from Osaka, JP
114.168.250.120	AS4713 NTT DOCOMO BUSINESS,Inc.	`4.39ms` from Osaka, JP
196.77.102.72	AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	`5.67ms` from Rabat, MA
211.173.25.88	AS9770 LG HelloVision Corp.	`7.07ms` from Seoul, KR
69.30.89.24	AS199124 Mega Limited	`0.11ms` from Stockholm, SE
118.79.109.56	AS4837 CHINA UNICOM China169 Backbone	`2.59ms` from Taiyuan, 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 -m11 203.11.4.28

traceroute to 203.11.4.28 (203.11.4.28): 11 hops max, 52 byte packets

2 [AS3257] 63.141.195.225 7.05 ms

3 [AS3257] 89.149.130.14 55.07 ms

4 [AS3257] 198.47.107.250 57.752 ms

5 [AS4637] 202.84.247.18 64.582 ms

6 [AS4637] 202.84.141.26 192.671 ms

7 [AS1221] 203.50.13.89 186.008 ms

8 [AS1221] 203.50.6.102 190.018 ms

9 *

10 *

11 *

Measurement taken from

IPinfo ProbeNet in Chicago, US

On January 30th 2026

What are IP address ranges?

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