AS12519

Summary

Country	United Kingdom
Organization	Fastnet International LTD
Domain	fastnet.co.uk
Number of IPv4	29,696
Number of IPv6	7.9228× 1028
AS Type	ISP
Registry	RIPE NCC
Allocated	June 12, 2002 (about 23 years ago)
Updated	June 11, 2019 (about 6 years ago)

IP Ranges

AS12519 announces 5 IPv4 ranges and 1 IPv6 range.

That's a total of 29,696 IPv4 addresses and 7.9228× 10²⁸ IPv6 addresses.

Prefix	Organization	Size	Registry	Status
81.31.64.0/20	British Postal Musuem	4,096	RIPE NCC	ASSIGNED PA
82.148.32.0/19	Fastnet International LTD	8,192	RIPE NCC	ALLOCATED PA
87.252.32.0/19	ADSL WAN C1	8,192	RIPE NCC	ASSIGNED PA
185.10.100.0/22	Fastnet International LTD	1,024	RIPE NCC	ALLOCATED PA
212.42.160.0/19	Fastnet International LTD	8,192	RIPE NCC	ASSIGNED PA

Prefix	Organization	Size	Registry	Status
2a02:13a0::/32	Fastnet International LTD	7.9228× 1028	RIPE NCC	ALLOCATED-BY-RIR

Peers

AS12519 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

AS12519 connects to the global Internet via at least 2 upstream providers. In this setup, AS12519 acts as a customer, subscribing to these transit services to obtain full BGP routing information and ensure reliable, redundant access to external networks.

Downstreams

AS12519 serves as a transit provider the following ASes, delivering the BGP routes needed for global connectivity. This downstream relationship underscores AS12519's role in extending Internet access beyond its own infrastructure.