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 [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 2025-07-15
mnt-by:         MAINT-AU-TIAR-AP
last-modified:  2025-11-18T00:26:24Z
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 2025-07-15
abuse-mailbox:  [email protected]
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 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:          203.52.0.0/15
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
203.48.0.0/14 AS1221 Telstra Limited 262,144
203.36.0.0/14 AS1221 Telstra Limited 262,144
203.102.0.0/15 AS703 Verizon Australia PTY Limited 131,072
203.59.0.0/16 AS7545 iiNet Limited 65,536
203.155.0.0/16 AS45197 KSC Commercial Internet Co. Ltd. 65,536
203.180.0.0/16 AS2497 Internet Initiative Japan Inc. 65,536
203.155.0.0/16 AS23644 KSC Commercial Internet Co. Ltd. 65,536
203.155.0.0/16 AS135620 KSC Commercial Internet Co. Ltd. 65,536
203.155.0.0/16 AS55844 KSC Commercial Internet Co. Ltd. 65,536
203.231.0.0/16 AS9684 SEJONG NETWORKS 65,536
203.69.0.0/16 AS3462 Data Communication Business Group, 65,536
203.177.0.0/16 AS24179 Globe Telecom 65,536
203.151.0.0/16 AS4618 Internet Thailand Company Limited 65,536
203.231.0.0/16 AS23593 SEJONG NETWORKS 65,536
203.74.0.0/16 AS131660 Data Communication Business Group, 65,536
203.177.0.0/16 AS4775 Globe Telecom 65,536
203.108.0.0/16 AS703 OzEmail Pty Ltd 65,536
203.151.0.0/16 AS56223 Internet Thailand Company Limited 65,536
203.206.0.0/16 AS7545 iiNet Limited 65,536
203.224.0.0/16 AS9273 ITCENENTEC CO.,LTD. 65,536
203.154.0.0/16 AS4618 Internet Thailand Company Limited 65,536
203.231.0.0/16 AS9973 SEJONG NETWORKS 65,536
203.231.0.0/16 AS131866 SEJONG NETWORKS 65,536
203.177.0.0/16 AS132595 Globe Telecom 65,536
203.63.0.0/16 AS2764 AAPT Limited 65,536
203.197.0.0/16 AS4755 Internet Service Provider 65,536
203.66.0.0/16 AS3462 Data Communication Business Group, 65,536
203.200.0.0/16 AS4755 Internet Service Provider 65,536
203.177.0.0/16 AS132199 Globe Telecom 65,536
203.106.0.0/16 AS4788 TM TECHNOLOGY SERVICES SDN. BHD. 65,536
203.74.0.0/16 AS3462 Data Communication Business Group, 65,536
203.75.0.0/16 AS3462 Data Communication Business Group, 65,536
203.227.0.0/16 AS9973 SEJONG NETWORKS 65,536
203.59.0.0/16 AS4802 iiNet Limited 65,536
203.155.0.0/16 AS17478 KSC Commercial Internet Co. Ltd. 65,536
203.151.0.0/16 AS133529 Internet Thailand Company Limited 65,536
203.85.0.0/16 AS4058 CITIC Telecom International CPC Limited 65,536
203.61.0.0/16 AS703 Verizon Australia PTY Limited 65,536
203.219.0.0/16 AS7545 TPG Internet Pty Ltd. 65,536
203.125.0.0/16 AS3758 SingNet Pte Ltd 65,536
203.227.0.0/16 AS23584 SEJONG NETWORKS 65,536
203.225.0.0/16 AS4766 KOLON BENIT 65,536
203.54.0.0/16 AS1221 Telstra Limited 65,536
203.177.0.0/16 AS24451 Globe Telecom 65,536
203.35.0.0/16 AS1221 Telstra Limited 65,536
203.218.0.0/16 AS4760 PCCW Limited 65,536
203.182.0.0/16 AS4673 NTT DATA CORPORATION 65,536
203.155.0.0/16 AS7693 KSC Commercial Internet Co. Ltd. 65,536

Hosted domains

There are 230 domain names hosted across 57 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 isawaplatypus.au 74
203.52.242.18 innotechamerica.com 22
203.53.139.210 consignmentprocessing.com 16
203.52.122.162 thelightingoutlet.au 14
203.53.241.97 dhs.vic.gov.au 14
203.52.55.226 infowareservices.au 10
203.52.122.165 crazydomainhosting.com.au 4
203.53.74.182 frankview.com.au 4
203.52.111.174 myreiq.com 4
203.53.66.94 transparencyaustralia.com.au 4
203.52.190.217 globusfamily.co.kr 3
203.53.17.22 portavin.com.au 3
203.52.42.126 simplytechnical.com.au 3
203.52.62.217 polywall.com.au 3
203.53.97.5 montaine.com.au 2
203.53.155.145 psivic.com.au 2
203.53.98.53 pirtekblw.au 2
203.52.113.248 borderofficesmart.com.au 2
203.52.131.210 legalaidtas.org.au 2
203.52.11.2 naturelinepackaging.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

1,570 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
203.52.9.73 AS1221 Telstra Limited 7.61ms from Adelaide, AU
203.53.92.113 AS1221 Telstra Limited 1.29ms from Brisbane, AU
203.53.155.145 AS1221 Telstra Limited 2.12ms from Melbourne, AU
203.52.122.185 AS1221 Telstra Limited 1.26ms from Melbourne, AU
203.52.196.186 AS1221 Telstra Limited 0.67ms from Melbourne, AU
203.52.175.254 AS1221 Telstra Limited 15.99ms from Perth, AU
203.53.111.34 AS1221 Telstra Limited 1.38ms from Sydney, AU
203.53.104.143 AS1221 Telstra Limited 0.37ms from Sydney, AU
203.52.236.78 AS1221 Telstra Limited 2.29ms from Sydney, AU
203.52.7.16 AS1221 Telstra Limited 0.63ms from Sydney, AU
203.52.57.162 AS1221 Telstra Limited 1.59ms from Brisbane, AU
203.52.58.247 AS1221 Telstra Limited 1.67ms from Brisbane, AU
203.52.224.193 AS1221 Telstra Limited 1.85ms from Melbourne, AU
203.52.109.17 AS1221 Telstra Limited 1.69ms from Melbourne, AU
203.52.229.205 AS1221 Telstra Limited 0.96ms from Melbourne, AU
203.53.31.79 AS1221 Telstra Limited 0.85ms from Sydney, AU
203.52.78.84 AS1221 Telstra Limited 5.01ms from Sydney, AU
203.53.23.1 AS1221 Telstra Limited 0.89ms from Adelaide, AU
203.53.204.161 AS1221 Telstra Limited 0.95ms from Brisbane, AU
203.53.72.164 AS1221 Telstra Limited 1.03ms from Melbourne, AU
203.52.230.233 AS1221 Telstra Limited 0.84ms from Melbourne, AU
203.52.114.85 AS1221 Telstra Limited 1.68ms from Melbourne, AU
203.52.84.105 AS1221 Telstra Limited 0.90ms from Perth, AU
203.52.237.198 AS1221 Telstra Limited 1.54ms from Perth, AU
203.52.104.58 AS1221 Telstra Limited 2.82ms 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
219.153.99.79 AS134420 Chongqing Telecom 0.63ms from Chongqing, CN
69.163.204.239 AS26347 New Dream Network, LLC 0.31ms from Hillsboro, US
176.41.139.159 AS34984 Superonline Iletisim Hizmetleri A.S. 12.57ms from Istanbul, TR
79.175.15.31 AS12418 Quantum CJSC 8.33ms from Kazan, RU
60.185.100.15 AS4134 CHINANET-BACKBONE 9.54ms from Ningbo, CN
50.45.245.95 AS20055 Wholesail networks LLC 1.26ms from Portland, US
39.86.98.127 AS4837 CHINA UNICOM China169 Backbone 10.93ms from Qingdao, CN
54.160.145.191 AS14618 Amazon.com, Inc. 0.23ms from Reston, US
24.56.232.143 AS11404 Wave Broadband 3.44ms from Seattle, US
1.175.182.127 AS3462 Data Communication Business Group 3.68ms from Taichung, TW
52.32.157.159 AS16509 Amazon.com, Inc. 0.18ms from Boardman, US
20.236.85.159 AS8075 Microsoft Corporation 0.20ms from Chicago, US
182.64.19.255 AS24560 Bharti Airtel Ltd., Telemedia Services 14.09ms from Delhi, IN
36.85.87.127 AS7713 PT Telekomunikasi Indonesia 2.62ms from Jakarta, ID
65.64.114.207 AS7018 AT&T Enterprises, LLC 1.34ms from Kansas City, US
86.28.66.255 AS5089 Virgin Media Limited 0.95ms from London, GB
38.145.217.255 AS18978 Enzu Inc 2.08ms from Los Angeles, US
221.227.5.47 AS4134 CHINANET-BACKBONE 4.76ms from Nanjing, CN
80.132.96.127 AS3320 Deutsche Telekom AG 4.04ms from Nuernberg, DE
152.250.241.207 AS27699 TELEFÔNICA BRASIL S.A 8.12ms from Osasco, BR
46.105.37.47 AS16276 OVH SAS 0.07ms from Roubaix, FR
123.204.178.255 AS4780 Digital United Inc. 2.07ms from Taipei, TW
57.180.136.127 AS16509 Amazon.com, Inc. 0.30ms from Tokyo, JP
62.122.77.239 AS8764 Telia Lietuva, AB 1.07ms from Vilnius, LT
184.1.75.255 AS19901 Brightspeed 8.22ms from Ashburn, US

Traceroute

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

$
traceroute -a -n -q1 -f3 203.52.83.185
traceroute to 203.52.83.185 (203.52.83.185): 64 hops max, 52 byte packets
3 [] 15.230.139.130 3.467 ms
4 [] 15.230.139.24 3.703 ms
5 *
6 *
9 [AS1221] 203.52.83.185 1.843 ms
Measurement taken from IPinfo ProbeNet in Perth, 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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