203.6.0.0/18

AS7474  ·  SingTel Optus Pty Ltd

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Summary

Country Australia
Domain defence.gov.au
ASN AS7474
Registry APNIC
ID AUSDEFENCE

WHOIS Details

inetnum:        203.6.0.0 - 203.6.63.255
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:  2021-01-15T01:28:25Z
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:  2025-11-18T00:27:25Z
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:         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

route:          203.6.0.0/18
origin:         AS7474
descr:          Australian Defence Organisation APW-G-034 PO Box 7953
mnt-by:         MAINT-AU-DEFENCE
last-modified:  2020-10-22T04:20:17Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 203.6.0.0/16

Range ASN Company Num of IPs
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 is 1 domain name hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
203.6.18.248 spmal.com 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

Pingable IPs

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

IP Address ASN Details
203.6.63.1 AS7474 SingTel Optus Pty Ltd 8.22ms from Sydney, AU
203.6.3.2 AS7474 SingTel Optus Pty Ltd 35.27ms from Sydney, AU
203.6.24.1 AS7474 SingTel Optus Pty Ltd 10.68ms from Sydney, AU
203.6.22.1 AS7474 SingTel Optus Pty Ltd 47.29ms from Sydney, AU
203.6.33.212 AS9466 UUNET Japan Limited 5.70ms from Sydney, AU
203.6.62.1 AS7474 SingTel Optus Pty Ltd 9.41ms from Sydney, AU
203.6.61.98 AS7474 SingTel Optus Pty Ltd 9.22ms from Sydney, AU
203.6.32.211 AS9466 UUNET Japan Limited 5.47ms from Sydney, AU
203.6.5.1 AS7474 SingTel Optus Pty Ltd 81.38ms from Sydney, AU
203.6.31.213 AS9466 UUNET Japan Limited 1.49ms from Sydney, AU
203.6.20.65 AS7474 SingTel Optus Pty Ltd 55.53ms from Sydney, AU
203.6.58.253 AS7474 SingTel Optus Pty Ltd 8.95ms 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
136.57.43.146 AS16591 Google Fiber Inc. 5.22ms from Atlanta, US
12.146.247.2 AS7018 AT&T Enterprises, LLC 4.67ms from Atlanta, US
41.222.129.210 AS36992 ETISALAT MISR 12.00ms from Cairo, EG
83.25.2.242 AS5617 Orange Polska Spolka Akcyjna 5.95ms from Gdansk, PL
14.217.139.162 AS4134 CHINANET-BACKBONE 4.15ms from Guangzhou, CN
73.147.107.130 AS7922 Comcast Cable Communications, LLC 13.88ms from Herndon, US
65.123.227.2 AS209 CenturyLink Communications, LLC 12.34ms from Miami, US
142.202.215.98 AS394703 I.D. Logique 11.32ms from Montreal, CA
121.225.153.178 AS4134 CHINANET-BACKBONE 2.25ms from Nanjing, CN
98.11.234.114 AS11351 Charter Communications Inc 12.41ms from New York City, US
24.188.55.50 AS6128 Cablevision Systems Corp. 8.95ms from New York City, US
71.188.97.146 AS701 Verizon Business 3.17ms from New York City, US
109.171.19.18 AS21127 Joint Stock Company TransTeleCom 4.72ms from Novosibirsk, RU
75.150.181.146 AS7922 Comcast Cable Communications, LLC 6.79ms from Secaucus, US
50.200.117.130 AS7922 Comcast Cable Communications, LLC 3.16ms from Secaucus, US
176.69.23.194 AS1257 Tele2 Sverige AB 0.63ms from Stockholm, SE
216.99.122.130 AS33749 Focus Broadband 11.88ms from Atlanta, US
123.253.194.242 AS147182 Clearview Networks 0.80ms from Brisbane, AU
43.155.77.2 AS132203 Tencent Building, Kejizhongyi Avenue 0.39ms from Hong Kong, HK
5.162.98.82 AS50010 Omani Qatari Telecommunication Company SAOC 2.39ms from Muscat, OM
70.45.54.18 AS14638 Liberty Communications of Puerto Rico LLC 1.38ms from San Juan, PR
201.117.77.242 AS8151 UNINET 3.01ms from Santiago de Queretaro, MX
142.165.117.18 AS803 Saskatchewan Telecommunications 17.55ms from Saskatoon, CA
14.82.168.98 AS4766 Korea Telecom 3.32ms from Seoul, KR
121.168.175.98 AS4766 Korea Telecom 1.23ms from Seoul, KR

Traceroute

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

$
traceroute -a -n -q1 -m8 203.6.3.1
traceroute to 203.6.3.1 (203.6.3.1): 8 hops max, 52 byte packets
2 [AS3356] 8.245.130.169 0.917 ms
3 *
4 *
5 [AS7474] 61.88.33.1 8.804 ms
6 *
7 *
8 *
Measurement taken from IPinfo ProbeNet in Sydney, AU
On

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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