Autonomous system profile

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

AS11736

Announcement observedARIN

USD - University of South Dakota · USD

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

Last active9/30/2026, 05:21:33Snapshot expired

View network topology RDAP registration

ASN: AS11736
Registration country: United States
Name: USD - University of South Dakota
Abbreviation: USD
Registration date: 12/3/1998, 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
192.236.32.0/19BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	9/30/2026, 00:00:00	✓	×	Historical record
192.55.228.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	9/30/2026, 00:00:00	✓	×	Historical record
206.176.0.0/20BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	9/30/2026, 00:00:00	✓	×	Historical record
206.176.0.0/21BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	9/30/2026, 00:00:00	✓	×	Historical record
206.176.12.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	9/30/2026, 00:00:00	✓	×	Historical record
206.176.57.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	9/30/2026, 00:00:00	✓	×	Historical record
206.176.58.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	9/30/2026, 00:00:00	✓	×	Historical record
206.176.8.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	9/30/2026, 00:00:00	✓	×	Historical record
206.209.0.0/20BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	9/30/2026, 00:00:00	✓	×	Historical record

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

Registration and sources

Organization: USD - University of South Dakota
RIR: ARIN
Registration country: United States
Registration date: 12/3/1998, 05:00:00
Abuse contact: Cheryl.Tiahrt@usd.edu

Snapshot trend

9/30/2026, 05:21:339 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