AS63781 — KFNET-AS - Kobayashi Family Net LLP

AS63781 announces 1 IPv4 prefixes covering 512 addresses and 1 IPv6 prefixes.

About this network

KFNET-AS is operated by Kobayashi Family Net LLP.

What it's used for

• The address space is registered under the netname KFNET-CIDR-BLK-JP with the Japan Network Information Center.
• The AS announces 512 IPv4 addresses and 1 IPv6 prefix, maintaining 4 observed routing neighbours.
• As an educational and research network, the traffic consists of academic users, research systems, and institutional endpoints.

Notable

• The registrant for the announced prefix is the Japan Network Information Center, consistent with the Japanese academic network infrastructure.
• The address inventory consists of a single IPv4 block and one IPv6 prefix, typical for a small-scale academic or research institution.

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

Announced prefixes

• 103.143.136.0/23
• 2405:5340::/32

Upstream networks

• AS59105 Home NOC Operators Group
• AS59103 SoftEther Corporation
• AS38074 SDCC Japan-West Area
• AS63798 Industrial Cyber Security Center of Excellence

Adjacent networks

• AS59105 Home NOC Operators Group
• AS59103 SoftEther Corporation
• AS38074 SDCC Japan-West Area
• AS63798 Industrial Cyber Security Center of Excellence

Routing security

• RPKI: 3 valid, 0 invalid and 0 not-found announcements; 3 ROAs.
• ASPA: none published.
• IRR: 0% of announcements registered; 0 route objects.
• Listed in as-sets: AS-GIGAINFRA, AS-GIGAINFRA-V6, AS-HURRICANEV6, AS-IIJ, AS-IIJ6, AS-KDD, AS-KDDI6, AS-MESH-CUSTOMER:AS10010, AS-MESH-CUSTOMER:AS59105, AS-SAKURA, AS-TOKAI, AS-TOKAI6, AS2497:AS-IIJ, AS2497:AS-IIJ6.