AS1221 ASN-TELSTRA - Telstra Limited

AS number

AS1221

Holder

ASN-TELSTRA - Telstra Limited

Country

AU

Regional registry

ARIN — American Registry for Internet Numbers

Registry block

1-1876 (IANA 16-bit Autonomous System (AS) Numbers Registry)

Announced today

Yes

IPv4 prefixes

282

IPv6 prefixes

2

Observed at

2026-09-05T16:00:00

Data: RIPEstat. Prefix and holder data comes from the RIPEstat Data API and is cached for 24 hours. The regional registry is derived from the IANA AS number allocation table. Authoritative registry records are served by ARIN RDAP.

• 198 IPv4 shown
• 2 IPv6 shown

• 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
• 101.160.0.0/11
• 103.58.34.0/24
• 103.58.35.0/24
• 103.58.212.0/24
• 103.78.241.0/24
• 103.136.214.0/24
• 103.136.215.0/24
• 103.149.43.0/24
• 103.195.64.0/24
• 103.226.244.0/23
• 103.247.118.0/23
• 103.247.118.0/24
• 103.247.119.0/24
• 110.140.0.0/15
• 110.142.0.0/16
• 110.143.0.0/16
• 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
• 148.80.1.0/24
• 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
• 149.176.226.0/24
• 149.176.227.0/24
• 149.176.244.0/24
• 149.176.246.0/24
• 149.176.248.0/24
• 149.176.250.0/24
• 149.176.251.0/24
• 149.176.252.0/24
• 149.176.253.0/24
• 149.176.254.0/24
• 149.176.255.0/24
• 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
• 159.222.184.0/24
• 160.187.61.0/24
• 164.108.9.0/24
• 164.108.10.0/24
• 164.108.12.0/24
• 164.108.13.0/24
• 164.108.17.0/24
• 164.108.24.0/22
• 164.108.104.0/24
• 164.108.105.0/24
• 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
• 192.74.140.0/22
• 192.74.144.0/20
• 192.74.160.0/19
• 192.74.192.0/20
• 192.74.208.0/24
• 192.111.105.0/24
• 192.131.150.0/24
• 192.148.116.0/22
• 192.148.120.0/21
• 192.148.128.0/19
• 192.148.160.0/22
• 192.148.164.0/23
• 192.158.45.0/24
• 192.195.197.0/24
• 192.243.20.0/24
• 192.243.21.0/24
• 192.243.22.0/24
• 192.243.23.0/24
• 198.57.15.0/24
• 202.1.240.0/20
• 202.3.74.0/24
• 202.4.181.0/24
• 202.7.64.0/19
• 202.8.92.0/24
• 202.12.128.0/18
• 202.12.192.0/19
• 202.12.224.0/20
• 202.12.240.0/23
• 202.12.242.0/24
• 202.36.14.0/24
• 202.58.226.0/24
• 202.70.143.0/24
• 202.93.155.0/24
• 203.2.228.0/24
• 203.3.100.0/24
• 203.3.101.0/24
• 203.3.102.0/24
• 203.4.130.0/24
• 203.4.131.0/24
• 203.4.192.0/24
• 203.4.193.0/24
• 203.4.196.0/24
• 203.5.58.0/24
• 203.5.88.0/24
• 203.5.176.0/24
• 203.5.177.0/24
• 203.6.127.0/24
• 203.6.171.0/24
• 203.8.90.0/24
• 203.8.107.0/24
• 203.9.190.0/23
• 203.11.4.0/24
• 203.12.62.0/24
• 203.12.83.0/24
• 203.12.132.0/24
• 203.12.144.0/21
• 203.12.231.0/24
• 203.13.76.0/24
• 203.13.77.0/24
• 203.14.0.0/20
• 203.14.116.0/23
• 203.14.160.0/24
• 203.14.161.0/24
• 203.14.222.0/24
• 203.14.223.0/24
• 203.15.68.0/24
• 203.15.254.0/24
• 203.16.140.0/24
• 203.16.180.0/22
• 203.17.40.0/21
• 203.17.162.0/24
• 203.18.34.0/24
• 203.18.35.0/24
• 203.18.112.0/20
• 203.20.43.0/24
• 203.20.87.0/24
• 203.20.197.0/24
• 203.20.199.0/24
• 203.20.238.0/24
• 203.20.239.0/24
• 203.21.49.0/24
• 203.21.50.0/24
• 203.21.51.0/24
• 203.21.52.0/24
• 203.21.53.0/24
• 203.21.54.0/24
• 203.21.55.0/24
• 203.21.56.0/24
• 203.21.57.0/24
• 203.21.58.0/24
• 203.21.59.0/24
• 2001:8000::/20
• 2401:a480::/48

A prefix here is a block this AS was seen originating in BGP, not a block it is guaranteed to own. Announcement and allocation are different facts, and they disagree more often than people expect.