Autonomous system profile

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

AS101

Announcement observedARIN

WASH-NSF-AS - University of Washington · WASH-NSF-AS

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

Last active10/17/2026, 06:26:09Snapshot expired

View network topology RDAP registration

ASN: AS101
Registration country: United States
Name: WASH-NSF-AS - University of Washington
Abbreviation: WASH-NSF-AS
Registration date: 3/31/1987, 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
198.32.195.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/21/2026, 16:00:00	✓	×	Historical record
207.231.240.0/20BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/30/2026, 08:00:00	✓	×	Historical record
209.124.176.0/20BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/17/2026, 00:00:00	✓	×	Currently valid
209.124.176.0/21BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/17/2026, 00:00:00	✓	×	Currently valid
209.124.184.0/21BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/17/2026, 00:00:00	✓	×	Currently valid

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

Registration and sources

Organization: WASH-NSF-AS - University of Washington
RIR: ARIN
Registration country: United States
Registration date: 3/31/1987, 05:00:00
Abuse contact: abuse@uw.edu

Snapshot trend

10/17/2026, 06:26:093 v43 v617 Upstream · 26 Uncertain

10/16/2026, 05:57:323 v43 v615 Upstream · 26 Uncertain

9/29/2026, 05:51:365 v44 v617 Upstream · 27 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 · cha-la-bgp-observations