AS187 — DNSCAST-AS - DNScast

AS187 announces 2 IPv4 prefixes covering 4,608 addresses and 2 IPv6 prefixes.

About this network

A low-numbered legacy allocation (DNSCAST-AS) now held by DNScast, a small DNS-focused network based in Berkeley, California.

What it's used for

• Operating DNS and related network services.

Notable

• Although currently registered to DNScast, the two-digit-adjacent AS number is an early-internet allocation from the number space's first years.

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

Announced prefixes

• 72.42.112.0/20
• 203.119.88.0/23
• 2001:dd8:7::/48
• 2620:171:d00::/44

Upstream networks

• AS42 WoodyNet, Inc.

Adjacent networks

• AS42 WoodyNet, Inc.

Routing security

• RPKI: 34 valid, 0 invalid and 0 not-found announcements; 4 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 38 route objects.
• Listed in as-sets: AS-HURRICANEV6, AS-NNENIX-CONNECTORS, AS-PCH, AS-TPIX-200N, AS141013:AS-GETAFIX-REACH-PEERS, AS61010:AS-IPNET-IX-KTKZ, AS7606:AS-NSW-IX.