Autonomous system profile

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

AS131

Announcement observedARIN

University of California, Santa Barbara · UCSB-NET-AS

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

Last active9/29/2026, 05:52:35Snapshot expired

View network topology RDAP registration

ASN: AS131
Registration country: United States
Name: University of California, Santa Barbara
Abbreviation: UCSB-NET-AS
Registration date: 9/30/1987, 04:00:00
Status: Announcement observed
RIR: ARIN

Network relationships and announced prefixes

ASN / prefix	Description / organization	Geographic scope	First seen	Last active	IPv4	IPv6	Status
128.111.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/21/2026, 16:00:00	✓	×	Currently valid
169.231.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/21/2026, 16:00:00	✓	×	Currently valid
192.150.216.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/21/2026, 16:00:00	✓	×	Currently valid
192.35.222.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/21/2026, 16:00:00	✓	×	Currently valid
199.120.153.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/21/2026, 16:00:00	✓	×	Currently valid

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

Registration and sources

Organization: University of California, Santa Barbara
RIR: ARIN
Registration country: United States
Registration date: 9/30/1987, 04:00:00
Abuse contact: security@ucsb.edu

Snapshot trend

9/29/2026, 05:52:355 v41 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