203.54.0.0/16

AS1221  ·  Telstra Limited

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Summary

Country Australia
Domain telstra.net
ASN AS1221
Registry APNIC
ID TELSTRAINTERNET5-AU

WHOIS Details

inetnum:        203.54.0.0 - 203.54.255.255
netname:        TELSTRAINTERNET5-AU
descr:          Telstra Limited
country:        AU
org:            ORG-TC6-AP
admin-c:        TIAR-AP
tech-c:         TAN2-AP
abuse-c:        AT1005-AP
status:         ALLOCATED PORTABLE
remarks:        -----
remarks:        All reports regarding SPAM or security breaches
remarks:        should be addressed to [email protected]
remarks:        ------
mnt-by:         APNIC-HM
mnt-lower:      MAINT-AU-TIAR-AP
mnt-routes:     MAINT-AU-TIAR-AP
mnt-irt:        IRT-TELSTRA-AU
last-modified:  2024-05-10T00:50:23Z
source:         APNIC

irt:            IRT-TELSTRA-AU
address:        Telstra Internet
e-mail:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        TIAR-AP
tech-c:         TIAR-AP
auth:           # Filtered
remarks:        [email protected] was validated on 2026-01-26
mnt-by:         MAINT-AU-TIAR-AP
last-modified:  2026-01-26T01:19:20Z
source:         APNIC

organisation:   ORG-TC6-AP
org-name:       Telstra Limited
org-type:       LIR
country:        AU
address:        242 Exhibition Street
e-mail:         [email protected]
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2024-12-06T08:30:50Z
source:         APNIC

role:           ABUSE TELSTRAAU
country:        ZZ
address:        Telstra Internet
phone:          +000000000
e-mail:         [email protected]
admin-c:        TIAR-AP
tech-c:         TIAR-AP
nic-hdl:        AT1005-AP
remarks:        Generated from irt object IRT-TELSTRA-AU
remarks:        [email protected] was validated on 2026-01-26
abuse-mailbox:  [email protected]
mnt-by:         APNIC-ABUSE
last-modified:  2026-01-26T01:19:29Z
source:         APNIC

role:           Telstra AU NOC
address:        Telstra Internet
address:        242 Exhibition Street
address:        Melbourne
address:        VIC 3000
country:        AU
phone:          +61 3 8650 3305
e-mail:         [email protected]
admin-c:        TIAR-AP
tech-c:         TIAR-AP
nic-hdl:        TAN2-AP
mnt-by:         MAINT-AU-TIAR-AP
last-modified:  2025-11-26T05:11:17Z
source:         APNIC

person:         Telstra Internet Address Registry
address:        Telstra Internet
address:        242 Exhibition St
address:        Melbourne
address:        VIC 3000
country:        AU
phone:          +61 000000000
e-mail:         [email protected]
nic-hdl:        TIAR-AP
remarks:        Telstra Internet Address Registry Role Object
mnt-by:         MAINT-AU-TIAR-AP
last-modified:  2021-12-09T22:28:56Z
source:         APNIC

route:          203.54.0.0/16
origin:         AS1221
descr:          Telstra Corporation 242 Exhibition Street
mnt-by:         MAINT-AU-TIAR-AP
last-modified:  2019-12-11T21:09:35Z
source:         APNIC

route:          203.54.0.0/16
origin:         AS19905
descr:          Telstra Corporation Limited 242 Exhibition Street
mnt-by:         MAINT-AU-TIAR-AP
last-modified:  2022-09-12T02:36:00Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 203.0.0.0/8

Range ASN Company Num of IPs
203.40.0.0/13 AS1221 Telstra Limited 524,288
203.36.0.0/14 AS1221 Telstra Limited 262,144
203.48.0.0/14 AS1221 Telstra Limited 262,144
203.52.0.0/15 AS1221 Telstra Limited 131,072
203.102.0.0/15 AS703 Verizon Australia PTY Limited 131,072
203.108.0.0/16 AS703 OzEmail Pty Ltd 65,536
203.59.0.0/16 AS7545 iiNet Limited 65,536
203.182.0.0/16 AS4673 NTT DATA CORPORATION 65,536
203.63.0.0/16 AS2764 AAPT Limited 65,536
203.227.0.0/16 AS9848 SEJONG NETWORKS 65,536
203.218.0.0/16 AS4760 PCCW Limited 65,536
203.177.0.0/16 AS132595 Globe Telecom 65,536
203.197.0.0/16 AS4755 Internet Service Provider 65,536
203.108.0.0/16 AS12234 OzEmail Pty Ltd 65,536
203.151.0.0/16 AS133529 Internet Thailand Company Limited 65,536
203.61.0.0/16 AS703 Verizon Australia PTY Limited 65,536
203.206.0.0/16 AS4739 iiNet Limited 65,536
203.206.0.0/16 AS7545 iiNet Limited 65,536
203.225.0.0/16 AS4766 KOLON BENIT 65,536
203.231.0.0/16 AS9684 SEJONG NETWORKS 65,536
203.231.0.0/16 AS9848 SEJONG NETWORKS 65,536
203.200.0.0/16 AS4755 Internet Service Provider 65,536
203.106.0.0/16 AS4788 TM TECHNOLOGY SERVICES SDN. BHD. 65,536
203.151.0.0/16 AS4618 Internet Thailand Company Limited 65,536
203.180.0.0/16 AS2497 Internet Initiative Japan Inc. 65,536
203.177.0.0/16 AS132199 Globe Telecom 65,536
203.59.0.0/16 AS4739 iiNet Limited 65,536
203.155.0.0/16 AS135620 KSC Commercial Internet Co. Ltd. 65,536
203.219.0.0/16 AS7545 TPG Internet Pty Ltd. 65,536
203.200.0.0/16 AS40009 Internet Service Provider 65,536
203.155.0.0/16 AS23644 KSC Commercial Internet Co. Ltd. 65,536
203.35.0.0/16 AS1221 Telstra Limited 65,536
203.69.0.0/16 AS137280 Data Communication Business Group, 65,536
203.177.0.0/16 AS24179 Globe Telecom 65,536
203.177.0.0/16 AS17894 Globe Telecom 65,536
203.157.0.0/16 AS9649 Ministry of Public Health, Thailand 65,536
203.177.0.0/16 AS24451 Globe Telecom 65,536
203.151.0.0/16 AS56223 Internet Thailand Company Limited 65,536
203.227.0.0/16 AS9973 SEJONG NETWORKS 65,536
203.73.0.0/16 AS4780 Digital United Inc. 65,536
203.231.0.0/16 AS214432 SEJONG NETWORKS 65,536
203.67.0.0/16 AS4780 Digital United Inc. 65,536
203.155.0.0/16 AS55844 KSC Commercial Internet Co. Ltd. 65,536
203.138.0.0/16 AS2514 NTT PC Communications,Inc. 65,536
203.85.0.0/16 AS4058 CITIC Telecom International CPC Limited 65,536
203.162.0.0/16 AS7643 Vietnam Posts and Telecommunications Group 65,536
203.227.0.0/16 AS23584 SEJONG NETWORKS 65,536
203.74.0.0/16 AS3462 Data Communication Business Group, 65,536
203.125.0.0/16 AS3758 SingNet Pte Ltd 65,536

Hosted domains

There are 18 domain names hosted across 16 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
203.54.137.42 buildsafeqld.com.au 2
203.54.161.230 primaryplant.com.au 2
203.54.248.170 sshw.com.au 1
203.54.229.14 mitutoyo.com.au 1
203.54.206.54 minsmere.com.au 1
203.54.235.66 cyx.ooo 1
203.54.249.34 casella.com.au 1
203.54.156.226 wiseinc.com.au 1
203.54.218.122 karlstorz.com.au 1
203.54.255.70 benara.com.au 1
203.54.196.70 acuneeds.co.nz 1
203.54.227.38 newmagic.com.au 1
203.54.130.158 fortemuw.com.au 1
203.54.157.50 sunporkgroup.net.au 1
203.54.232.126 neilsparts.com.au 1
203.54.233.66 harryyacka.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

11,268 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
203.54.208.234 AS1221 Telstra Limited 0.52ms from Melbourne, AU
203.54.218.146 AS1221 Telstra Limited 0.71ms from Melbourne, AU
203.54.140.69 AS1221 Telstra Limited 0.52ms from Sydney, AU
203.54.211.133 AS1221 Telstra Limited 0.67ms from Sydney, AU
203.54.166.17 AS1221 Telstra Limited 0.65ms from Sydney, AU
203.54.205.21 AS1221 Telstra Limited 0.64ms from Sydney, AU
203.54.154.178 AS1221 Telstra Limited 0.55ms from Perth, AU
203.54.183.17 AS1221 Telstra Limited 0.58ms from Sydney, AU
203.54.163.65 AS1221 Telstra Limited 0.60ms from Sydney, AU
203.54.195.117 AS1221 Telstra Limited 0.57ms from Sydney, AU
203.54.220.249 AS1221 Telstra Limited 0.63ms from Sydney, AU
203.54.244.149 AS1221 Telstra Limited 0.65ms from Sydney, AU
203.54.159.25 AS1221 Telstra Limited 0.70ms from Sydney, AU
203.54.197.65 AS1221 Telstra Limited 0.65ms from Sydney, AU
203.54.143.213 AS1221 Telstra Limited 0.53ms from Sydney, AU
203.54.180.137 AS1221 Telstra Limited 0.59ms from Sydney, AU
203.54.185.41 AS1221 Telstra Limited 0.68ms from Sydney, AU
203.54.179.41 AS1221 Telstra Limited 0.65ms from Sydney, AU
203.54.241.42 AS1221 Telstra Limited 0.69ms from Sydney, AU
203.54.138.229 AS1221 Telstra Limited 0.56ms from Sydney, AU
203.54.234.29 AS1221 Telstra Limited 0.57ms from Sydney, AU
203.54.155.1 AS1221 Telstra Limited 0.64ms from Sydney, AU
203.54.196.145 AS1221 Telstra Limited 0.64ms from Sydney, AU
203.54.172.98 AS1221 Telstra Limited 0.15ms from Sydney, AU
203.54.206.197 AS1221 Telstra Limited 0.68ms 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
170.210.173.240 AS28068 Universidad Nacional de San Luis 15.62ms from Buenos Aires, AR
171.222.120.160 AS4134 CHINANET-BACKBONE 7.32ms from Chengdu, CN
34.171.241.112 AS396982 Google LLC 0.10ms from Council Bluffs, US
97.107.84.0 AS13728 D&P Communications, Inc. 1.88ms from Detroit, US
187.101.59.176 AS27699 TELEFÔNICA BRASIL S.A 2.46ms from Osasco, BR
112.237.131.48 AS4837 CHINA UNICOM China169 Backbone 10.81ms from Qingdao, CN
20.114.71.208 AS8075 Microsoft Corporation 0.23ms from San Antonio, US
219.28.150.96 AS17676 SoftBank Corp. 3.39ms from Tokyo, JP
210.255.182.176 AS2516 KDDI CORPORATION 3.94ms from Tokyo, JP
2.20.72.224 AS16625 Akamai Technologies, Inc. 0.11ms from Vienna, AT
46.126.173.48 AS6730 Sunrise GmbH 5.35ms from Zuerich, CH
94.66.39.144 AS6799 Ote SA (Hellenic Telecommunications Organisation) 1.25ms from Athens, GR
67.140.137.224 AS7029 Windstream Communications LLC 10.04ms from Atlanta, US
94.224.138.112 AS6848 Telenet BV 5.46ms from Brussels, BE
175.23.209.176 AS4837 CHINA UNICOM China169 Backbone 6.61ms from Changchun, CN
24.88.52.144 AS11426 Charter Communications Inc 4.28ms from Charlotte, US
52.159.71.176 AS8075 Microsoft Corporation 0.75ms from Chicago, US
91.125.20.32 AS6871 Plusnet 4.64ms from Erith, GB
45.225.130.208 AS266937 COM TELECOM 11.26ms from Fortaleza, BR
18.158.75.32 AS16509 Amazon.com, Inc. 0.18ms from Frankfurt am Main, DE
58.239.203.208 AS9318 SK Broadband Co Ltd 7.17ms from Incheon, KR
87.163.92.96 AS3320 Deutsche Telekom AG 5.40ms from Nuernberg, DE
182.166.123.32 AS17511 OPTAGE Inc. 1.93ms from Osaka, JP
175.204.162.192 AS4766 Korea Telecom 5.56ms from Seoul, KR
47.40.51.160 AS20115 Charter Communications LLC 4.34ms from St. Louis, 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 -m13 203.54.68.15
traceroute to 203.54.68.15 (203.54.68.15): 13 hops max, 52 byte packets
7 [AS16276] 103.5.15.27 96.746 ms
8 *
9 [AS1221] 110.145.193.65 96.084 ms
10 [AS1221] 203.50.11.176 121.071 ms
11 *
12 *
13 *
Measurement taken from IPinfo ProbeNet in Singapore, SG
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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