203.17.40.0/21
AS1221 · Telstra Limited
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| Country |
Australia
|
| Domain | telstra.net |
| ASN | AS1221 |
| Registry | APNIC |
| ID | TELSTRAINTERNET-AU |
WHOIS Details
inetnum: 203.17.40.0 - 203.17.47.255 netname: TELSTRAINTERNET-AU descr: Telstra Limited country: AU org: ORG-TC6-AP admin-c: TIAR-AP tech-c: TAN2-AP status: ALLOCATED PORTABLE abuse-c: AT1005-AP 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 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: 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 2026-01-26 abuse-mailbox: abuse@telstra.net 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: 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: 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: 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: 203.17.40.0/21 origin: AS1221 descr: Telstra Corporation 242 Exhibition Street mnt-by: MAINT-AU-TIAR-AP last-modified: 2021-01-22T04:40:10Z source: APNIC route: 203.17.40.0/21 origin: AS19905 descr: Telstra Corporation Limited 242 Exhibition Street mnt-by: MAINT-AU-TIAR-AP last-modified: 2022-09-12T02:17:47Z source: APNIC
Nearby Ranges
BGP prefixes that overlap with 203.17.0.0/16
| Range | ASN | Company | Num of IPs |
|---|---|---|---|
| 203.17.96.0/21 | AS7545 | iiNet Limited | 2,048 |
| 203.17.168.0/21 | AS9893 | Cenitex | 2,048 |
| 203.17.76.0/22 | AS17766 | Nexon Asia Pacific Pty Ltd | 1,024 |
| 203.17.32.0/22 | AS24543 | First Data Resources Australia | 1,024 |
| 203.17.240.0/22 | AS140065 | CiFi Pty Ltd | 1,024 |
| 203.17.204.0/22 | AS4826 | Mitsubishi Electric Australia Pty Ltd | 1,024 |
| 203.17.148.0/22 | AS38611 | Bendigo Community Telco Limited | 1,024 |
| 203.17.244.0/23 | AS137409 | GSL Networks Pty LTD | 512 |
| 203.17.212.0/23 | AS38333 | My Net Fone Limited | 512 |
| 203.17.220.0/23 | AS8075 | AUSTRADE | 512 |
| 203.17.245.0/24 | AS137409 | GSL Networks Pty LTD - Amsterdam | 256 |
| 203.17.137.0/24 | AS150151 | SKY COMMUNICATIONS INTERNET SERVICES | 256 |
| 203.17.177.0/24 | AS154167 | Rackmill | 256 |
| 203.17.138.0/24 | AS16509 | SingTel Optus Pty Ltd | 256 |
| 203.17.165.0/24 | AS16509 | Uniware Managed Services Pty Ltd | 256 |
| 203.17.236.0/24 | AS17632 | Barristers' Chambers Limited, | 256 |
| 203.17.70.0/24 | AS17807 | State Library of Queensland | 256 |
| 203.17.23.0/24 | AS17882 | Univision LLC | 256 |
| 203.17.126.0/24 | AS209242 | LACHTARISTO HOLDINGS LIMITED | 256 |
| 203.17.123.0/24 | AS212384 | Private Customer | 256 |
| 203.17.251.0/24 | AS2764 | Data Analysis Australia | 256 |
| 203.17.66.0/24 | AS34414 | Nokia Solutions and Networks Australia Pty Ltd | 256 |
| 203.17.226.0/24 | AS38424 | KOREA CABLE TELECOM | 256 |
| 203.17.36.0/24 | AS38719 | Dreamscape Networks PTY LTD | 256 |
| 203.17.166.0/24 | AS45158 | ISW Technology Pty Ltd | 256 |
| 203.17.253.0/24 | AS45240 | Realestate.com.au Limited | 256 |
| 203.17.225.0/24 | AS45570 | Active Ideas Pty. Ltd. | 256 |
| 203.17.185.0/24 | AS45867 | Commonwealth Bank of Australia | 256 |
| 203.17.7.0/24 | AS4826 | City Of Kwinana | 256 |
| 203.17.93.0/24 | AS4826 | Denver Technology | 256 |
| 203.17.65.0/24 | AS63996 | MD Rehanur Rahman t/a M/S FNF Online | 256 |
| 203.17.8.0/24 | AS7545 | TPG Internet Pty Ltd. | 256 |
| 203.17.215.0/24 | AS7637 | State Library of Victoria | 256 |
| 203.17.29.0/24 | AS7703 | Westway Nominees Pty Ltd t/a Bekkers | 256 |
| 203.17.73.0/24 | AS9268 | Ultrahost Pty Ltd | 256 |
| 203.17.167.0/24 | AS9336 | ID Interdomain | 256 |
| 203.17.120.0/24 | AS9893 | Cenitex | 256 |
| 203.17.31.0/24 | AS10215 | Microland Limited | 256 |
| 203.17.163.0/24 | AS9942 | TPG Internet Pty Ltd. | 256 |
| 203.17.237.0/24 | AS10557 | UAB code200 | 256 |
| 203.17.162.0/24 | AS1221 | Telstra Limited | 256 |
| 203.17.194.0/24 | AS131302 | 294/3 Vidhya Nagari Marg | 256 |
| 203.17.12.0/24 | AS134802 | Naic Cable TV Corp. | 256 |
| 203.17.180.0/24 | AS135600 | Whiz Communications Pte Ltd | 256 |
| 203.17.181.0/24 | AS135600 | Whiz Communications Pte Ltd | 256 |
| 203.17.214.0/24 | AS136518 | Department of Planning, Lands and Heritage | 256 |
| 203.17.193.0/24 | AS136572 | The Office of the Chief Information Officer (OCIO) | 256 |
| 203.17.154.0/24 | AS137060 | The Club Group Pty Limited | 256 |
| 203.17.244.0/24 | AS137409 | GSL Networks Pty LTD - Amsterdam | 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 |
|---|---|---|
| 203.17.42.59 | stratinnova.net | 1 |
Hosted domains API
Pingable IPs
No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.
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 |
|---|---|---|
| 212.129.20.165 |
0.23ms from Amsterdam,
NL
|
|
| 102.189.222.53 |
9.83ms from Cairo,
EG
|
|
| 71.74.67.69 |
9.23ms from Columbus,
US
|
|
| 103.151.0.37 |
0.59ms from Dhaka,
BD
|
|
| 73.166.247.245 |
3.67ms from Houston,
US
|
|
| 90.36.1.229 |
7.06ms from Le Lamentin,
MQ
|
|
| 150.241.10.85 |
8.00ms from Madrid,
ES
|
|
| 201.185.213.117 |
9.29ms from Medellin,
CO
|
|
| 176.60.66.149 |
5.25ms from Minsk,
BY
|
|
| 61.203.215.197 |
6.84ms from Osaka,
JP
|
|
| 81.255.129.21 |
3.39ms from Paris,
FR
|
|
| 135.13.12.21 |
0.29ms from Saint Thomas Mount,
IN
|
|
| 37.232.187.5 |
11.12ms from Samara,
RU
|
|
| 61.169.130.181 |
3.23ms from Shanghai,
CN
|
|
| 185.56.172.213 |
0.31ms from Warsaw,
PL
|
|
| 2.132.15.197 |
2.10ms from Almaty,
KZ
|
|
| 185.164.63.229 |
2.20ms from Amsterdam,
NL
|
|
| 100.28.88.85 |
0.58ms from Ashburn,
US
|
|
| 120.15.235.101 |
10.79ms from Beijing,
CN
|
|
| 41.82.114.229 |
3.29ms from Dakar,
SN
|
|
| 134.3.178.101 |
4.65ms from Frankfurt am Main,
DE
|
|
| 113.98.83.37 |
2.14ms from Guangzhou,
CN
|
|
| 203.233.212.213 |
1.27ms from Incheon,
KR
|
|
| 39.40.142.5 |
12.17ms from Islamabad,
PK
|
|
| 180.32.51.133 |
13.00ms from Osaka,
JP
|
Traceroute
Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.
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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