AS12086 — DT-MICRO

AS12086 announces 13 IPv4 prefixes covering 55,552 addresses and 0 IPv6 prefixes.

About this network

A small Washington state network operator whose announcements are almost entirely the address space of Kitsap County government.

What it's used for

• Carrying Kitsap County's network. Every one of the announced blocks is registered to Kitsap County under the netname KITSAP-COUNTY, with the county's own network administration listed as the contact.

Notable

• The AS is registered to DT Micro but announces nobody else's space. This is the shape of a service provider that runs the network for a single large customer, rather than an ISP with a subscriber base of its own.
• 55,000 addresses across 18 prefixes, all carved out of 146.218.0.0/16, against just two observed BGP neighbours. A county government end site with two ways in.
• No IPv6 announced.

Interesting

• Kitsap County sits across Puget Sound from Seattle and holds a full legacy class B, which is a lot of address space for a county of a quarter of a million people. Local governments that connected early got allocations sized to the era rather than to their population, and unlike companies they rarely have a reason to give any of it back.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 146.218.0.0/18
• 146.218.64.0/19
• 146.218.96.0/20
• 146.218.112.0/21
• 146.218.128.0/18
• 146.218.196.0/22
• 146.218.200.0/21
• 146.218.208.0/23
• 146.218.236.0/22
• 146.218.240.0/21
• 146.218.248.0/22
• 146.218.252.0/23
• 146.218.254.0/24

Upstream networks

• AS16713 Northwest Open Access Network
• AS3356 Level 3 Parent, LLC

Adjacent networks

• AS16713 Northwest Open Access Network
• AS3356 Level 3 Parent, LLC

Routing security

• RPKI: 0 valid, 0 invalid and 111 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 89% of announcements registered; 102 route objects.
• Listed in as-sets: AS-63529-AS-IMPORT-AS6939, AS-HURRICANE, AS-NOANET-PEERING, AS-TRANSROUTE-SPEC, AS-WAVE-CUSTOMERS.