203.52.0.0/15

AS1221  ·  Telstra Limited

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Summary

Country Australia
Domain telstra.net
ASN AS1221
Registry APNIC
ID TELSTRAINTERNET4-AU

WHOIS Details

inetnum:        203.52.0.0 - 203.53.255.255
netname:        TELSTRAINTERNET4-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 abuse@telstra.net
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:         abuse@telstra.net
abuse-mailbox:  abuse@telstra.net
admin-c:        TIAR-AP
tech-c:         TIAR-AP
auth:           # Filtered
remarks:        abuse@telstra.net was validated on 2025-07-15
mnt-by:         MAINT-AU-TIAR-AP
last-modified:  2025-09-04T01:00:06Z
source:         APNIC

organisation:   ORG-TC6-AP
org-name:       Telstra Limited
org-type:       LIR
country:        AU
address:        242 Exhibition Street
e-mail:         corporateaddressing@team.telstra.com
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:         abuse@telstra.net
admin-c:        TIAR-AP
tech-c:         TIAR-AP
nic-hdl:        AT1005-AP
remarks:        Generated from irt object IRT-TELSTRA-AU
remarks:        abuse@telstra.net was validated on 2025-07-15
abuse-mailbox:  abuse@telstra.net
mnt-by:         APNIC-ABUSE
last-modified:  2025-07-15T22:43:15Z
source:         APNIC

role:           Telstra AU NOC
address:        Telstra Internet
address:        242 Exhibition Street
address:        Melbourne
address:        VIC 3000
country:        AU
phone:          +61 3 8632 0516
e-mail:         ipnoc-au@team.telstra.com
admin-c:        TIAR-AP
tech-c:         TIAR-AP
nic-hdl:        TAN2-AP
mnt-by:         MAINT-AU-TIAR-AP
last-modified:  2022-06-08T09:03:20Z
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:         addressing@telstra.net
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:          203.52.0.0/15
origin:         AS1221
descr:          Telstra Corporation 242 Exhibition Street
mnt-by:         MAINT-AU-TIAR-AP
last-modified:  2019-12-11T21:09:32Z
source:         APNIC

route:          203.52.0.0/15
origin:         AS19905
descr:          Telstra Corporation Limited 242 Exhibition Street
mnt-by:         MAINT-AU-TIAR-AP
last-modified:  2022-09-12T02:35:05Z
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
203.102.0.0/15 AS703 Verizon Australia PTY Limited 131,072
203.35.0.0/16 AS1221 Telstra Limited 65,536
203.162.0.0/16 AS7643 Vietnam Posts and Telecommunications Group 65,536
203.206.0.0/16 AS7545 iiNet Limited 65,536
203.231.0.0/16 AS9973 SEJONG NETWORKS 65,536
203.59.0.0/16 AS7545 iiNet Limited 65,536
203.231.0.0/16 AS9684 SEJONG NETWORKS 65,536
203.227.0.0/16 AS17592 SEJONG NETWORKS 65,536
203.68.0.0/16 AS1659 Taiwan Academic Network 65,536
203.54.0.0/16 AS1221 Telstra Limited 65,536
203.64.0.0/16 AS1659 Taiwan Academic Network 65,536
203.155.0.0/16 AS55844 KSC Commercial Internet Co. Ltd. 65,536
203.73.0.0/16 AS4780 Digital United Inc. 65,536
203.151.0.0/16 AS56223 Internet Thailand Company Limited 65,536
203.108.0.0/16 AS703 OzEmail Pty Ltd 65,536
203.219.0.0/16 AS7545 TPG Internet Pty Ltd. 65,536
203.227.0.0/16 AS9319 SEJONG NETWORKS 65,536
203.227.0.0/16 AS9973 SEJONG NETWORKS 65,536
203.177.0.0/16 AS4775 Globe Telecom 65,536
203.227.0.0/16 AS9493 SEJONG NETWORKS 65,536
203.231.0.0/16 AS17881 SEJONG NETWORKS 65,536
203.138.0.0/16 AS2514 NTT PC Communications,Inc. 65,536
203.108.0.0/16 AS12234 OzEmail Pty Ltd 65,536
203.61.0.0/16 AS703 Verizon Australia PTY Limited 65,536
203.85.0.0/16 AS4058 CITIC Telecom International CPC Limited 65,536
203.231.0.0/16 AS3608 SEJONG NETWORKS 65,536
203.162.0.0/16 AS45899 Vietnam Posts and Telecommunications Group 65,536
203.67.0.0/16 AS4780 Digital United Inc. 65,536
203.182.0.0/16 AS4673 NTT DATA CORPORATION 65,536
203.155.0.0/16 AS17478 KSC Commercial Internet Co. Ltd. 65,536
203.70.0.0/16 AS4780 Digital United Inc. 65,536
203.180.0.0/16 AS2497 Internet Initiative Japan Inc. 65,536
203.225.0.0/16 AS4766 KOLON BENIT 65,536
203.155.0.0/16 AS135620 KSC Commercial Internet Co. Ltd. 65,536
203.227.0.0/16 AS38676 SEJONG NETWORKS 65,536
203.218.0.0/16 AS4760 PCCW Limited 65,536
203.157.0.0/16 AS9649 Ministry of Public Health, Thailand 65,536
203.227.0.0/16 AS138195 SEJONG NETWORKS 65,536
203.66.0.0/16 AS3462 Data Communication Business Group, 65,536
203.125.0.0/16 AS3758 SingNet Pte Ltd 65,536
203.151.0.0/16 AS4618 Internet Thailand Company Limited 65,536
203.200.0.0/16 AS4755 Internet Service Provider 65,536
203.59.0.0/16 AS4802 iiNet Limited 65,536
203.224.0.0/16 AS9273 ITCENENTEC CO.,LTD. 65,536
203.227.0.0/16 AS9848 SEJONG NETWORKS 65,536
203.231.0.0/16 AS18309 SEJONG NETWORKS 65,536

Hosted domains

There are 239 domain names hosted across 61 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
203.53.155.74 guidedbynature.com 74
203.52.242.18 innotechtas.com.au 23
203.53.139.210 consignmentprocessing.com 16
203.53.241.97 dhs.vic.gov.au 15
203.52.122.162 allstatesecurity.services 14
203.52.55.226 satsof.com.au 10
203.53.74.182 frankview.com 4
203.52.122.165 mannersautowreckers.com 4
203.52.111.174 myreiq.com.au 4
203.53.66.94 disclosureaus.com.au 4
203.53.17.22 portavin.com.au 3
203.53.97.5 montaine.com.au 3
203.53.147.96 frogsoftware.com.au 3
203.52.190.217 globusfamily.co.nz 3
203.52.62.217 polyunderfoot.com.au 3
203.52.42.126 simplytechnical.com.au 3
203.53.98.53 pirtekblw.com.au 2
203.53.190.248 devocean.net.au 2
203.52.228.210 westrac.com 2
203.53.155.145 psivic.com.au 2

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

1,510 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
203.52.140.202 AS1221 Telstra Limited 4.74ms from Brisbane, AU
203.52.59.99 AS1221 Telstra Limited 3.32ms from Brisbane, AU
203.53.51.89 AS1221 Telstra Limited 1.40ms from Brisbane, AU
203.52.109.17 AS1221 Telstra Limited 1.53ms from Melbourne, AU
203.52.235.46 AS1221 Telstra Limited 1.11ms from Sydney, AU
203.53.95.146 AS1221 Telstra Limited 1.33ms from Sydney, AU
203.52.242.22 AS1221 Telstra Limited 1.55ms from Brisbane, AU
203.52.254.177 AS1221 Telstra Limited 1.51ms from Melbourne, AU
203.52.216.146 AS1221 Telstra Limited 2.02ms from Melbourne, AU
203.53.74.18 AS1221 Telstra Limited 1.20ms from Melbourne, AU
203.52.32.57 AS1221 Telstra Limited 13.57ms from Melbourne, AU
203.53.45.243 AS1221 Telstra Limited 5.47ms from Sydney, AU
203.52.219.62 AS1221 Telstra Limited 0.79ms from Melbourne, AU
203.53.50.105 AS1221 Telstra Limited 1.21ms from Melbourne, AU
203.53.56.6 AS1221 Telstra Limited 0.47ms from Melbourne, AU
203.52.201.165 AS1221 Telstra Limited 1.33ms from Perth, AU
203.52.106.241 AS1221 Telstra Limited 1.68ms from Perth, AU
203.52.13.247 AS1221 Telstra Limited 0.37ms from Sydney, AU
203.53.82.1 AS1221 Telstra Limited 0.42ms from Sydney, AU
203.53.4.129 AS1221 Telstra Limited 1.45ms from Sydney, AU
203.52.9.74 AS1221 Telstra Limited 7.44ms from Adelaide, AU
203.53.19.234 AS1221 Telstra Limited 25.44ms from Brisbane, AU
203.53.94.7 AS1221 Telstra Limited 0.57ms from Melbourne, AU
203.52.178.26 AS1221 Telstra Limited 1.30ms from Perth, AU
203.53.59.80 AS1221 Telstra Limited 6.70ms from Perth, 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
102.67.100.191 AS37721 Virtual Technologies & Solutions 19.84ms from Accra, GH
109.177.102.207 AS5384 Emirates Internet 3.00ms from Al Fujairah City, AE
137.118.120.175 AS6250 NeoNova Network Services, LLC 14.43ms from Atlanta, US
152.248.50.175 AS26599 TELEFÔNICA BRASIL S.A 13.55ms from Fortaleza, BR
2.120.210.223 AS5607 Sky UK Limited 5.03ms from London, GB
88.165.251.31 AS12322 Free SAS 2.76ms from Paris, FR
94.19.114.63 AS35807 SkyNet Ltd. 0.39ms from Saint Petersburg, RU
58.237.203.207 AS9318 SK Broadband Co Ltd 7.18ms from Seoul, KR
3.113.21.143 AS16509 Amazon.com, Inc. 0.11ms from Tokyo, JP
154.242.163.31 AS36947 Telecom Algeria 17.29ms from Valencia, ES
142.251.228.159 AS15169 Google LLC 0.23ms from Al Fujairah City, AE
141.95.36.143 AS16276 OVH SAS 0.14ms from Frankfurt am Main, DE
79.255.121.15 AS3320 Deutsche Telekom AG 4.26ms from Frankfurt am Main, DE
185.119.74.47 AS13101 TNG Stadtnetz GmbH 2.35ms from Hamburg, DE
47.120.75.63 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 0.24ms from Heyuan, CN
180.72.59.159 AS4788 TM TECHNOLOGY SERVICES SDN. BHD. 6.70ms from Kuala Lumpur, MY
86.164.94.191 AS2856 British Telecommunications PLC 2.70ms from London, GB
2.120.171.207 AS5607 Sky UK Limited 3.75ms from London, GB
76.175.177.207 AS20001 Charter Communications Inc 5.36ms from Los Angeles, US
45.67.183.255 AS39328 SISNET NUEVAS TECNOLOGIAS S.L. 0.52ms from Madrid, ES
176.195.12.127 AS12714 PJSC MegaFon 1.55ms from Moscow, RU
208.109.32.191 AS26496 GoDaddy.com, LLC 0.71ms from Phoenix, US
18.208.161.143 AS14618 Amazon.com, Inc. 0.38ms from Reston, US
40.78.126.31 AS8075 Microsoft Corporation 0.58ms from San Jose, US
125.138.143.159 AS4766 Korea Telecom 4.03ms 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 -f5 203.52.44.49
traceroute to 203.52.44.49 (203.52.44.49): 64 hops max, 52 byte packets
6 [AS1221] 203.50.12.132 1.634 ms
7 [AS1221] 203.50.11.177 1.749 ms
8 [AS1221] 203.52.44.49 2.192 ms
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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