AS15917

Summary

Country	United Kingdom
Organization	Csc Computer Sciences LTD
Domain	dxc.com
Number of IPv4	6,144
Number of IPv6	0
AS Type	Business
Registry	RIPE NCC
Allocated	January 01, 1970 (about 56 years ago)
Updated	November 18, 2025 (about 28 days ago)

IP Ranges

AS15917 announces 3 IPv4 ranges and 0 IPv6 range.

That's a total of 6,144 IPv4 address and 0 IPv6 address.

Prefix	Organization	Size	Registry	Status
217.31.0.0/22	Csc UK Web Hosting Service	1,024	RIPE NCC	ASSIGNED PA
217.31.0.0/20	Csc UK Web Hosting Service	4,096	RIPE NCC	ASSIGNED PA
217.31.4.0/22	Csc Mwh Network	1,024	RIPE NCC	ASSIGNED PA

Peers

AS15917 does not have any direct peering agreements. Instead, its global connectivity is achieved through transit providers. While this setup ensures comprehensive reach, future peering could reduce latency and optimize route efficiency.

Upstreams

There are currently no upstream providers for AS15917. This means the network doesn’t subscribe to traditional upstream services for global connectivity. Instead, it likely relies on direct peering or its own infrastructure to reach external networks. While this can reduce transit costs, it requires a robust peering strategy to maintain broad reachability and ensure redundancy.

Downstreams

AS15917 currently has no downstream networks, meaning it does not serve as a transit provider to customer networks.