Autonomous System
AS1221 Telstra Limited
ISPActiveAustraliaAPNIC
AS1221 (ASN-TELSTRA) is an ISP network operated by Telstra Limited in Australia, registered with APNIC. It has 280 IPv4 prefixes with 13,402,624 addresses and 2 IPv6 prefixes, which makes it the 54th largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses13,402,624in 280 prefixes
IPv6 prefixes2≈ 3.2 × 10³² addresses
Size rank#54of 82,200 active ASNs
Details
OrganizationTelstra Limited
AS nameASN-TELSTRA
Websitetelstra.com.au
Country Australia (AU)
Network typeISP
RegistryAPNIC
Abuse contactabuse@telstra.net
Registered—
Last updated2024-05-03
IPv4 prefixes
280 prefixes · 13,402,624 addresses| Network | Addresses | First – last address |
|---|---|---|
| 1.128.0.0/11 | 2,097,152 | 1.128.0.0 – 1.159.255.255 |
| 101.160.0.0/11 | 2,097,152 | 101.160.0.0 – 101.191.255.255 |
| 58.160.0.0/12 | 1,048,576 | 58.160.0.0 – 58.175.255.255 |
| 121.208.0.0/12 | 1,048,576 | 121.208.0.0 – 121.223.255.255 |
| 124.176.0.0/12 | 1,048,576 | 124.176.0.0 – 124.191.255.255 |
| 1.120.0.0/13 | 524,288 | 1.120.0.0 – 1.127.255.255 |
| 60.224.0.0/13 | 524,288 | 60.224.0.0 – 60.231.255.255 |
| 110.144.0.0/13 | 524,288 | 110.144.0.0 – 110.151.255.255 |
| 120.144.0.0/13 | 524,288 | 120.144.0.0 – 120.151.255.255 |
| 203.40.0.0/13 | 524,288 | 203.40.0.0 – 203.47.255.255 |
| 120.152.0.0/14 | 262,144 | 120.152.0.0 – 120.155.255.255 |
| 144.132.0.0/14 | 262,144 | 144.132.0.0 – 144.135.255.255 |
| 203.36.0.0/14 | 262,144 | 203.36.0.0 – 203.39.255.255 |
| 203.48.0.0/14 | 262,144 | 203.48.0.0 – 203.51.255.255 |
| 110.140.0.0/15 | 131,072 | 110.140.0.0 – 110.141.255.255 |
| 120.156.0.0/15 | 131,072 | 120.156.0.0 – 120.157.255.255 |
| 123.210.0.0/15 | 131,072 | 123.210.0.0 – 123.211.255.255 |
| 144.136.0.0/15 | 131,072 | 144.136.0.0 – 144.137.255.255 |
| 203.52.0.0/15 | 131,072 | 203.52.0.0 – 203.53.255.255 |
| 101.103.0.0/16 | 65,536 | 101.103.0.0 – 101.103.255.255 |
| 110.142.0.0/16 | 65,536 | 110.142.0.0 – 110.142.255.255 |
| 110.143.0.0/16 | 65,536 | 110.143.0.0 – 110.143.255.255 |
| 120.158.0.0/16 | 65,536 | 120.158.0.0 – 120.158.255.255 |
| 123.209.0.0/16 | 65,536 | 123.209.0.0 – 123.209.255.255 |
| 125.255.0.0/16 | 65,536 | 125.255.0.0 – 125.255.255.255 |
1.128.0.0/11 101.160.0.0/11 58.160.0.0/12 121.208.0.0/12 124.176.0.0/12 1.120.0.0/13 60.224.0.0/13 110.144.0.0/13 120.144.0.0/13 203.40.0.0/13 120.152.0.0/14 144.132.0.0/14 203.36.0.0/14 203.48.0.0/14 110.140.0.0/15 120.156.0.0/15 123.210.0.0/15 144.136.0.0/15 203.52.0.0/15 101.103.0.0/16 110.142.0.0/16 110.143.0.0/16 120.158.0.0/16 123.209.0.0/16 125.255.0.0/16
The 25 largest of 280. The API and the database have all of them.
IPv6 prefixes
2 prefixes- 2001:8000::/20
- 2401:a480::/48
2001:8000::/20 2401:a480::/48
Query AS1221 with the API
The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day.
curl "https://api.ipapi.is/?q=AS1221&key=YOUR_API_KEY"Any address in its prefixes resolves to AS1221, with or without a key:
curl "https://api.ipapi.is/?q=1.128.0.1"Other networks of Telstra Limited
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