Autonomous system profile

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

AS20138

Announcement observedARIN

CTHS-ASN-20138 - Carson Tahoe Health System · CTHS-ASN-20138

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

Last active10/1/2026, 04:38:59Snapshot expired

View network topology RDAP registration

ASN: AS20138
Registration country: United States
Name: CTHS-ASN-20138 - Carson Tahoe Health System
Abbreviation: CTHS-ASN-20138
Registration date: 9/16/2020, 14:57:05
Status: Announcement observed
RIR: ARIN

Network relationships and announced prefixes

ASN / prefix	Description / organization	Geographic scope	First seen	Last active	IPv4	IPv6	Status
12.139.152.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 00:00:00	10/1/2026, 00:00:00	✓	×	Currently valid

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

Registration and sources

Organization: CTHS-ASN-20138 - Carson Tahoe Health System
RIR: ARIN
Registration country: United States
Registration date: 9/16/2020, 14:57:05
Abuse contact: ITSSupportCenter@ctrh.org

Snapshot trend

10/1/2026, 04:38:591 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 · rir-rdap-asn · iana-rdap-asn-bootstrap