Autonomous system profile

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

AS10309

Announcement observedARIN

County of Marin · MARIN-MIDAS

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

Last active10/22/2026, 19:22:52Snapshot expired

View network topology RDAP registration

ASN: AS10309
Registration country: United States
Name: County of Marin
Abbreviation: MARIN-MIDAS
Registration date: 6/23/1997, 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
107.0.46.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 16:00:00	9/29/2026, 16:00:00	✓	×	Currently valid
199.88.113.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 16:00:00	9/29/2026, 16:00:00	✓	×	Currently valid
199.88.114.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 16:00:00	9/29/2026, 16:00:00	✓	×	Currently valid
199.88.116.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 16:00:00	9/29/2026, 16:00:00	✓	×	Currently valid
199.88.118.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 16:00:00	9/29/2026, 16:00:00	✓	×	Currently valid
199.88.120.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 16:00:00	9/29/2026, 16:00:00	✓	×	Currently valid
199.88.64.0/21BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 16:00:00	9/29/2026, 16:00:00	✓	×	Currently valid
199.88.72.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 16:00:00	9/29/2026, 16:00:00	✓	×	Currently valid
199.88.76.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 16:00:00	9/29/2026, 16:00:00	✓	×	Currently valid
199.88.79.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 16:00:00	9/29/2026, 16:00:00	✓	×	Currently valid
199.88.80.0/21BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 16:00:00	9/29/2026, 16:00:00	✓	×	Currently valid
199.88.88.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 16:00:00	9/29/2026, 16:00:00	✓	×	Currently valid

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

Registration and sources

Organization: County of Marin
RIR: ARIN
Registration country: United States
Registration date: 6/23/1997, 04:00:00
Abuse contact: jason.balderama@marincounty.gov

Snapshot trend

10/22/2026, 19:22:5212 v40 v63 Upstream · 0 Uncertain

9/30/2026, 02:16:2112 v40 v63 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: iana-rdap-asn-bootstrap · rir-rdap-asn