AS1221 — ASN-TELSTRA Telstra Limited

Network type: mobile

AS1221 announces 240 IPv4 prefixes covering 13,387,264 addresses and 2 IPv6 prefixes.

About this network

Telstra (ASN-TELSTRA) — Australia's largest telecom and incumbent, running the country's biggest fixed and mobile networks plus a regional backbone.

What it's used for

• Consumer and business broadband and mobile across Australia, and international connectivity throughout the Asia-Pacific.

Notable

• The dominant Australian "eyeball" network, and a significant carrier of Asia-Pacific transit through Telstra International.

Interesting

• Formerly the state-owned Telecom Australia, Telstra was privatised in stages and remains the backbone of Australian telecommunications.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 1.120.0.0/13
• 1.128.0.0/11
• 58.160.0.0/12
• 60.224.0.0/13
• 61.8.0.0/19
• 61.9.128.0/17
• 66.111.164.0/24
• 66.111.166.0/24
• 66.111.168.0/24
• 66.111.171.0/24
• 66.111.173.0/24
• 101.103.0.0/16
• 101.160.0.0/14
• 101.164.0.0/15
• 101.166.0.0/16
• 101.167.0.0/17
• 101.167.128.0/19
• 101.167.160.0/20
• 101.167.224.0/19
• 101.168.0.0/13
• 101.176.0.0/12
• 103.58.34.0/23
• 103.58.212.0/24
• 103.78.241.0/24
• 103.136.214.0/23
• 103.149.43.0/24
• 103.195.64.0/24
• 103.226.244.0/23
• 103.247.118.0/23
• 110.140.0.0/14
• 110.144.0.0/13
• 120.144.0.0/13
• 120.152.0.0/14
• 120.156.0.0/15
• 120.158.0.0/16
• 121.208.0.0/12
• 122.200.24.0/23
• 123.209.0.0/16
• 123.210.0.0/15
• 124.176.0.0/12
• 125.255.0.0/16
• 136.238.200.0/24
• 137.147.0.0/16
• 138.130.0.0/16
• 138.217.0.0/16
• 139.130.0.0/16
• 139.134.0.0/16
• 139.168.0.0/16
• 143.223.18.0/24
• 143.223.87.0/24
• 143.238.0.0/16
• 144.130.0.0/17
• 144.130.144.0/20
• 144.130.160.0/19
• 144.130.192.0/18
• 144.131.0.0/16
• 144.132.0.0/14
• 144.136.0.0/15
• 144.139.0.0/16
• 144.140.0.0/16
• 146.144.9.0/24
• 147.69.0.0/16
• 149.135.0.0/16
• 149.176.112.0/24
• 149.176.116.0/24
• 149.176.172.0/24
• 149.176.221.0/24
• 149.176.223.0/24
• 149.176.225.0/24
• 149.176.226.0/23
• 149.176.244.0/24
• 149.176.246.0/24
• 149.176.248.0/24
• 149.176.250.0/23
• 149.176.252.0/22
• 156.22.1.0/24
• 156.22.2.0/24
• 158.45.0.0/22
• 158.45.13.0/24
• 158.45.14.0/24
• 158.45.60.0/22
• 158.45.100.0/24
• 158.45.104.0/24
• 158.45.112.0/24
• 158.45.116.0/24
• 158.45.120.0/24
• 158.146.145.0/24
• 158.146.152.0/24
• 160.187.61.0/24
• 164.108.9.0/24
• 164.108.10.0/24
• 164.108.12.0/23
• 164.108.17.0/24
• 164.108.24.0/22
• 164.108.104.0/23
• 164.108.181.0/24
• 165.228.0.0/16
• 168.233.31.0/24
• 180.94.27.0/24
• 192.74.139.0/24

and 142 more.

Upstream networks

• AS4637 Telstra Global
• AS35280 F5 Networks SARL
• AS4608 Asia Pacific Network Information Centre

Downstream networks

• AS135887 Belong (Telstra Limited)
• AS16509 Amazon.com, Inc.
• AS20940 Akamai International B.V.
• AS7545 TPG Telecom Limited
• AS4764 Aussie Broadband
• AS45763 Opticomm Co Pty Ltd
• AS10235 National Australia Bank Limited
• AS9893 Cenitex
• AS18055 Department of Human Services
• AS37978 Networking Tasmania
• AS3360 DXC US Latin America Corporation
• AS132029 Telstra Limited
• AS4637 Telstra Global
• AS31898 Oracle Corporation
• AS24313 NSW Department of Education
• AS54113 Fastly, Inc.
• AS23943 Hyperspike Pty Ltd,
• AS9880 NextGen.Net Pty Ltd, North Sydney
• AS13335 Cloudflare, Inc.
• AS20473 The Constant Company, LLC
• AS21859 Zenlayer Inc
• AS136988 LEASEWEB AUSTRALIA PTY LIMITED
• AS55478 Level 15, 100 arthur Street
• AS56105 Department of Education and Training - Victoria
• AS135879 Hyundai Motor Company Australia Pty Ltd

Adjacent networks

• AS4637 Telstra Global
• AS4608 Asia Pacific Network Information Centre
• AS135887 Belong (Telstra Limited)
• AS20940 Akamai International B.V.
• AS4764 Aussie Broadband
• AS16509 Amazon.com, Inc.
• AS7545 TPG Telecom Limited
• AS9507 NextHop Pty Ltd
• AS45763 Opticomm Co Pty Ltd
• AS49915 Megaport (UK) Limited
• AS10235 National Australia Bank Limited
• AS20473 The Constant Company, LLC
• AS60068 Datacamp Limited
• AS4826 Vocus Connect International Backbone
• AS15830 Equinix (EMEA) Acquisition Enterprises B.V.
• AS9893 Cenitex
• AS21859 Zenlayer Inc
• AS63956 5G NETWORK OPERATIONS PTY LTD
• AS45437 Real World - The Core
• AS37978 Networking Tasmania
• AS18055 Department of Human Services
• AS3360 DXC US Latin America Corporation
• AS132029 Telstra Limited
• AS133934 AUS IT SERVICES PTY LTD
• AS31898 Oracle Corporation