Autonomous system profile

Review registration details, announced prefixes, network relationships and historical snapshots.

AS1221

Announcement observedARIN

ASN-TELSTRA - Telstra Limited · ASN-TELSTRA

This profile is assembled from CHA.LA's normalized registration, routing and observation snapshots.

Last active10/23/2026, 07:11:24Snapshot expired

View network topology RDAP registration

ASN: AS1221
Registration country: Australia
Name: ASN-TELSTRA - Telstra Limited
Abbreviation: ASN-TELSTRA
Registration date: 9/4/2008, 06:40:28
Status: Announcement observed
RIR: ARIN

Network relationships and announced prefixes

ASN / prefix	Description / organization	Geographic scope	First seen	Last active	IPv4	IPv6	Status
1.120.0.0/13BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
1.128.0.0/11BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
101.103.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
101.160.0.0/11BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
103.136.214.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
103.136.215.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
103.149.43.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
103.195.64.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
103.226.244.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
103.247.118.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
103.247.118.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
103.247.119.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
103.58.212.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
103.58.34.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
103.58.35.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
103.78.241.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
110.140.0.0/15BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
110.142.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
110.143.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
110.144.0.0/13BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
120.144.0.0/13BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
120.152.0.0/14BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
120.156.0.0/15BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
120.158.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
121.208.0.0/12BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
122.200.24.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
123.209.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
123.210.0.0/15BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
124.176.0.0/12BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
125.255.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
136.238.200.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
137.147.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
138.130.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
138.217.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
139.130.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
139.134.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
139.168.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
143.223.18.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
143.223.87.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
143.238.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
144.130.0.0/17BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
144.130.144.0/20BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
144.130.160.0/19BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
144.130.192.0/18BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
144.131.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
144.132.0.0/14BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
144.136.0.0/15BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
144.139.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
144.140.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid
146.144.9.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/23/2026, 00:00:00	✓	×	Currently valid

BGP prefixes have no geographic country; the column is marked not applicable.

Registration and sources

Organization: ASN-TELSTRA - Telstra Limited
RIR: ARIN
Registration country: Australia
Registration date: 9/4/2008, 06:40:28
Abuse contact: abuse@telstra.net

Snapshot trend

10/23/2026, 07:11:24281 v42 v65 Upstream · 1 Uncertain

10/21/2026, 22:26:03282 v42 v66 Upstream · 1 Uncertain

10/18/2026, 19:09:34282 v42 v611 Upstream · 4 Uncertain

10/15/2026, 02:12:24282 v42 v611 Upstream · 4 Uncertain

10/11/2026, 02:59:41282 v42 v611 Upstream · 4 Uncertain

10/9/2026, 22:21:05282 v42 v611 Upstream · 4 Uncertain

ASN route snapshotThis page reads collected ASN, prefix, relationship and history data. External interfaces are used for initial collection and scheduled refreshes.Source keys: cha-la-external-routing · rir-rdap-asn