AS51973

Summary

Country	Russian Federation
Organization	Koltushsky Internet LTD
Domain	kolt-internet.ru
Number of IPv4	8,192
Number of IPv6	1.2089× 1024
AS Type	ISP
Registry	RIPE NCC
Allocated	December 09, 2010 (about 15 years ago)
Updated	January 27, 2025 (about 8 months ago)

IP Ranges

AS51973 announces 2 IPv4 ranges and 1 IPv6 range.

That's a total of 8,192 IPv4 addresses and 1.2089× 10²⁴ IPv6 addresses.

Prefix	Organization	Size	Registry	Status
46.149.32.0/20	Koltushsky Internet LTD	4,096	RIPE NCC	ASSIGNED PI
81.163.240.0/20	Koltushsky Internet LTD	4,096	RIPE NCC	ASSIGNED PI

Prefix	Organization	Size	Registry	Status
2001:67c:2954::/48	Koltushsky Internet LTD	1.2089× 1024	RIPE NCC	ASSIGNED PI

Peers

AS51973 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

AS51973 connects to the global Internet via at least 4 upstream providers. In this setup, AS51973 acts as a customer, subscribing to these transit services to obtain full BGP routing information and ensure reliable, redundant access to external networks.

Downstreams

AS51973 serves as a transit provider the following ASes, delivering the BGP routes needed for global connectivity. This downstream relationship underscores AS51973's role in extending Internet access beyond its own infrastructure.