203.6.127.0/24

AS1221 · Telstra Limited

Need more data or want to access it via API or data downloads? Sign up to get free access

Summary

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

WHOIS Details

inetnum:        203.6.64.0 - 203.6.127.255
netname:        AUSDEFENCE
descr:          Australian Defence Organization
descr:          Department of Defence
descr:          ANZAC Park West
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:  2024-11-21T00:44:23Z
source:         APNIC

irt:            IRT-AUS-DEFENCE-AU
address:        Department of Defence
address:        Bonshaw Rd, HMAS Harman
address:        Cannberra, ACT 2600
address:        Australia
e-mail:         architecture.support@defence.gov.au
abuse-mailbox:  architecture.support@defence.gov.au
admin-c:        RJ190-AP
tech-c:         RJ190-AP
auth:           # Filtered
remarks:        architecture.support@defence.gov.au was validated on 2025-09-17
mnt-by:         MAINT-AU-DEF-MGMTCONFIG
last-modified:  2025-09-17T02:14:50Z
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:         ciogsoftware.procurements@defence.gov.au
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:         architecture.support@defence.gov.au
admin-c:        RJ190-AP
tech-c:         RJ190-AP
nic-hdl:        AA2247-AP
remarks:        Generated from irt object IRT-AUS-DEFENCE-AU
remarks:        architecture.support@defence.gov.au was validated on 2025-09-17
abuse-mailbox:  architecture.support@defence.gov.au
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:         hostmaster@defence.gov.au
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:         fwmgr@defence.gov.au
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 203.6.0.0/16

Range	ASN	Company	Num of IPs
203.6.0.0/18	AS7575	Australian Department of Defence	16,384
203.6.0.0/18	AS7474	Australian Department of Defence	16,384
203.6.0.0/18	AS9466	Australian Department of Defence	16,384
203.6.160.0/19	AS18431	Department of Foreign Affairs and Trade	8,192
203.6.224.0/20	AS58519	CHINANET Guangdong province network	4,096
203.6.148.0/23	AS55684	Universitas Sebelas Maret	512
203.6.146.0/23	AS136572	The Office of the Chief Information Officer (OCIO)	512
203.6.144.0/23	AS7575	Australian War Memorial	512
203.6.141.0/24	AS56132	Monash University	256
203.6.137.0/24	AS7545	Bluechip Infotech Pty Ltd	256
203.6.143.0/24	AS7545	BMW AUSTRALIA LTD	256
203.6.241.0/24	AS4764	aboc IT Consulting	256
203.6.209.0/24	AS135003	MISPL Internet Services (Pvt) Ltd	256
203.6.210.0/24	AS135003	MISPL Internet Services (Pvt) Ltd	256
203.6.211.0/24	AS135003	MISPL Internet Services (Pvt) Ltd	256
203.6.250.0/24	AS24436	Anglican Church Grammar School	256
203.6.251.0/24	AS24476	RURAL PRESS PTY LIMITED	256
203.6.246.0/24	AS45475	Bluff Trading Ltd.	256
203.6.208.0/24	AS135003	MISPL Internet Services (Pvt) Ltd	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

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

IP Address	ASN	Details
203.6.127.38	AS1221 Telstra Limited	`1.98ms` 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
154.247.85.184	AS36947 Telecom Algeria	`12.81ms` from Algiers, DZ
71.120.132.152	AS701 Verizon Business	`8.78ms` from Ashburn, US
151.145.188.136	AS7029 Windstream Communications LLC	`0.72ms` from Ashburn, US
136.113.53.88	AS396982 Google LLC	`0.13ms` from Council Bluffs, US
35.193.115.152	AS396982 Google LLC	`0.13ms` from Council Bluffs, US
14.254.247.200	AS45899 VNPT Corp	`0.91ms` from Da Nang, VN
41.82.159.88	AS8346 SONATEL-AS Autonomous System	`2.33ms` from Dakar, SN
20.233.181.56	AS8075 Microsoft Corporation	`0.92ms` from Dubai, AE
212.224.81.8	AS44066 firstcolo GmbH	`0.47ms` from Frankfurt am Main, DE
151.240.9.40	AS16276 OVH SAS	`1.59ms` from Gravelines, FR
109.110.254.72	AS35432 Cablenet Communication Systems plc	`6.36ms` from Larnaca, CY
176.26.143.40	AS5607 Sky UK Limited	`1.59ms` from London, GB
116.72.136.136	AS17488 Hathway IP Over Cable Internet	`4.10ms` from Mumbai, IN
67.248.211.184	AS11351 Charter Communications Inc	`12.62ms` from New York City, US
98.10.70.152	AS11351 Charter Communications Inc	`19.64ms` from New York City, US
154.202.4.40	AS20326 TeraSwitch Networks Inc.	`1.03ms` from New York City, US
174.44.239.248	AS6128 Cablevision Systems Corp.	`11.72ms` from Secaucus, US
14.39.14.88	AS4766 Korea Telecom	`1.28ms` from Seoul, KR
134.238.23.200	AS394089 Google LLC	`0.94ms` from Singapore, SG
126.122.140.152	AS17676 SoftBank Corp.	`9.40ms` from Tokyo, JP
85.127.94.104	AS8412 T-Mobile Austria GmbH	`4.78ms` from Vienna, AT
52.239.243.56	AS8075 Microsoft Corporation	`0.47ms` from Amsterdam, NL
67.172.58.88	AS7922 Comcast Cable Communications, LLC	`10.07ms` from Ashburn, US
46.176.212.56	AS3329 VODAFONE-PANAFON HELLENIC TELECOMMUNICATIONS COMPANY SA	`5.03ms` from Athens, GR
75.91.178.56	AS7029 Windstream Communications LLC	`12.31ms` from Atlanta, US

Traceroute

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

traceroute -a -n -q1 -f6 203.6.127.121

traceroute to 203.6.127.121 (203.6.127.121): 64 hops max, 52 byte packets

6 [AS1221] 138.217.181.65 0.213 ms

7 [AS1221] 203.50.12.132 1.403 ms

8 [AS1221] 203.50.11.101 0.921 ms

9 [AS1221] 203.50.11.104 1.16 ms

10 [AS1221] 139.130.190.178 1.633 ms

11 [AS1221] 203.6.127.121 2.394 ms

Measurement taken from

IPinfo ProbeNet in Sydney, AU

On October 30th 2025

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.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales