Autonomous system profile

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

AS23229

Announcement observedARIN

TransCanada Pipelines Ltd. · TRANSCANADA

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

Last active10/1/2026, 11:54:17Snapshot expired

View network topology RDAP registration

ASN: AS23229
Registration country: Canada
Name: TransCanada Pipelines Ltd.
Abbreviation: TRANSCANADA
Registration date: 2/13/2002, 05:00:00
Status: Announcement observed
RIR: ARIN

Network relationships and announced prefixes

ASN / prefix	Description / organization	Geographic scope	First seen	Last active	IPv4	IPv6	Status
198.161.208.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 08:00:00	10/1/2026, 08:00:00	✓	×	Currently valid
199.166.110.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 08:00:00	10/1/2026, 08:00:00	✓	×	Currently valid
199.166.120.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 08:00:00	10/1/2026, 08:00:00	✓	×	Currently valid
199.166.124.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 08:00:00	10/1/2026, 08:00:00	✓	×	Currently valid
199.166.128.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 08:00:00	10/1/2026, 08:00:00	✓	×	Currently valid
199.166.130.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 08:00:00	10/1/2026, 08:00:00	✓	×	Currently valid
199.166.136.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 08:00:00	10/1/2026, 08:00:00	✓	×	Currently valid
199.166.138.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 08:00:00	10/1/2026, 08:00:00	✓	×	Currently valid
199.166.184.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 08:00:00	10/1/2026, 08:00:00	✓	×	Currently valid
199.166.188.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 08:00:00	10/1/2026, 08:00:00	✓	×	Currently valid
199.185.108.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 08:00:00	10/1/2026, 08:00:00	✓	×	Currently valid

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

Registration and sources

Organization: TransCanada Pipelines Ltd.
RIR: ARIN
Registration country: Canada
Registration date: 2/13/2002, 05:00:00
Abuse contact: network_abuse@tcenergy.com

Snapshot trend

10/1/2026, 11:54:1711 v40 v62 Upstream · 0 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 · iana-rdap-asn-bootstrap · rir-rdap-asn