Autonomous system
AS1221 ASN-TELSTRA Telstra Limited
Mobile APNIC
Summary
Telstra
isp eyeball backbone
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. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 240 prefixes · 13.39M addresses IPv6 2 prefixes
| Country | Name | Prefixes |
|---|---|---|
| AU | Australia | 242 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS1221- Registry name
- ASN-TELSTRA
- Registrant
- Telstra Limited
- Abuse contact
- abuse@telstra.net
- Registered
- 2008-09-04
- Last changed
- 2024-05-03
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 45% valid · 126 valid, 157 with no ROA
- ROAs
- 185 authorising AS1221
- ASPA
- 1 declared providers
- IRR
- 70% registered · 199 of 283 announcements 27 other origin
- Route objects
- 386 naming AS1221
Reputation
Classification and threat
Mobile Cellular carrier. Addresses are shared by many handsets via CGNAT.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 431 networks and 1,768 prefixes, as published 2026-10-12. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere