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AS63781

Kobayashi Family Net LLP

APNIC JP Announced

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Organization

Kobayashi Family Net LLP

KFNET-AS

Registered

Aug 25, 2014

12 years ago

IPv4 Prefixes

512 addresses

IPv6 Prefixes

65,536 × /48

BGP Neighbours

4 upstream/peer · 0 downstream

Registration

The registry's RDAP record for this AS number could not be retrieved; it is looked up again automatically.

AS Number AS63781 AS Name KFNET-AS Country Japan (JP) Registry APNIC Allocated Aug 25, 2014 AS Description KFNET-AS - Kobayashi Family Net LLP, JP

IPv4 Prefixes

2 prefixes · 512 addresses Routing data as of 2026-10-08 16:00 UTC

Prefix	Range	Addresses
103.143.136.0/24	103.143.136.0 – 103.143.136.255	256
103.143.137.0/24	103.143.137.0 – 103.143.137.255	256

IPv6 Prefixes

1 prefix · 65,536 × /48 Routing data as of 2026-10-08 16:00 UTC

Prefix	Addresses
2405:5340::/32	2⁹⁶

BGP Neighbours

4 unique neighbours · 4 upstream/peer · 0 downstream. A neighbour can be seen on more than one side. Rows are ordered by AS paths: the number of BGP paths seen by RIPE RIS that contain the adjacency. Sightings count each IPv4/IPv6 route with the adjacency once per RIS peer that sees it (routes × peers), so they show how widely it is seen, not how many distinct routes it carries.

Upstream & peer side (4)

Networks seen to the left of this AS in BGP paths, toward the route collectors — typically its transit providers (upstreams) and peers.

AS	Name	AS paths	IPv4 sightings	IPv6 sightings
AS59105	HOMENOC - Home NOC Operators Group	183	401	75
AS38074	SDCC-AS-AP - SDCC Japan-West Area	157	0	223
AS59103	SOFTETHER - SoftEther Corporation	109	263	58
AS63798	IPA-ENTERNET - Industrial Cyber Security Center of Excellence	8	16	7