AS203577

Summary

Country	Japan
Organization	Fumon Shimadate
Domain	shimadate.com
Number of IPv4	256
Number of IPv6	4.8478× 1026
AS Type	ISP
Registry	RIPE NCC
Allocated	July 29, 2022 (about 3 years ago)
Updated	September 01, 2025 (about 10 days ago)

IP Ranges

AS203577 announces 1 IPv4 range and 4 IPv6 ranges.

That's a total of 256 IPv4 addresses and 4.8478× 10²⁶ IPv6 addresses.

Prefix	Organization	Size	Registry	Status
216.146.29.0/24	Fumon Shimadate	256	ARIN	REASSIGNMENT

Prefix	Organization	Size	Registry	Status
2a06:41:8100::/40	Fsnoc - Tokyo (jp)	3.0949× 1026	RIPE NCC	ASSIGNED
2a06:41:8100::/41	Fsnoc - Tokyo (jp)	1.5474× 1026	RIPE NCC	ASSIGNED
2a06:a005:1f50::/44	Fumon Shimadate	1.9343× 1025	RIPE NCC	ASSIGNED
2a06:a005:1f5e::/48	Fumon Shimadate	1.2089× 1024	RIPE NCC	ASSIGNED

Peers

AS203577 actively fosters the following peering relationships that enhance network performance through direct, settlement-free traffic exchange. Even with a modest number of peers, each connection serves as a strategic asset—optimizing routing, reducing latency, and minimizing transit costs.

Upstreams

AS203577 connects to the global Internet via at least 2 upstream providers. In this setup, AS203577 acts as a customer, subscribing to these transit services to obtain full BGP routing information and ensure reliable, redundant access to external networks.

Downstreams

AS203577 currently has no downstream networks, meaning it does not serve as a transit provider to customer networks.