Overview
Telstra operates a transit or backbone network associated with AS1221.
This record includes the representative IPv4 CIDR 101.103.0.0/16. It is not an exhaustive list of the network’s address space or current routing announcements.
This is a network-origin record, not an exact physical-facility location or proof that a request is automated. Evaluate the ASN and CIDR together with the User-Agent, request path, request rate, session behavior, and application context before enforcement.
Provider and network
- Network / Provider Name
- Telstra
- Registered / Operating Organization
- Telstra Limited
- ISP / Network Operator
- Telstra Limited
- ASN
-
AS1221 - ASN Name
- Telstra Limited
- Network Name
- Telstra Limited
- Current Services
- National and international backbone transport, IP transit, and downstream connectivity
- Provider Type
- Transit carrier
- Network Type
- Transit backbone
Representative IP range
- Representative IP Version
- IPv4
- Representative IP / CIDR
-
101.103.0.0/16 - Range Scope
- Representative
- Range Label
- Representative CIDR
- Range Start
-
101.103.0.0 - Range End
-
101.103.255.255 - Example IP
-
101.103.0.1 - Example IP Decimal
-
1701249025
Network scope
- Registry Country
- AU
Traffic and handling
- Traffic Classification
- Network Infrastructure Traffic
- Traffic Label
- Transit / Carrier
- Risk Level
- Low
- Recommended Action
- Use for routing context only. Do not block a transit ASN or representative backbone range as though it identifies the originating customer.
- Default Rule Action
- Log
- Common Pattern
- Transit and backbone ranges provide routing context and may carry traffic for many unrelated downstream networks.
- Detection Notes
- Match AS1221 and representative CIDR 101.103.0.0/16, then confirm the actual origin network, request identity, and behavior before enforcement.