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AS15395Rackspace Ltd.

United KingdomRegistryRIPE NCCTypeContent

As of 24th October 2026, AS15395 (Rackspace Ltd.), a content network registered in the United Kingdom with RIPE NCC, originates 75 IPv4 prefixes covering 405k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 800th-largest of the 79,664 networks we see originating IPv4, and the 21st-largest of 2,078 in the United Kingdom. It is seen behind 1 upstream network, most often AS12200 (Rackspace Hosting). 3% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 45% of its routes reach at least 90% of full-feed peers, and 2 prefixes are also originated by another network.

At a glance

IPv4 prefixes

75

IPv6 prefixes

1

IPv4 addresses

405k

IPv6 /64s

4.3B

Upstream graph

The networks AS15395 is seen behind, one and two hops out, drawn from real AS paths.

AS15395Toward the internet core
Upstream graph for AS15395: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS15395Rackspace Ltd.This networkAS12200Rackspace HostingAS1299Arelion (fka. Tel…AS6461Zayo Bandwidth

Networks observed one and two hops upstream of AS15395 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

2

adjacent networks

Upstreams
150%
Peers
150%
Downstreams
00%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS15395
NetworkCountryRelationshipPathsVantage pts
AS12200Rackspace HostingUSPeer2,705137

Prefixes

All 76

The largest blocks AS15395 originates, widest first.

Largest prefixes originated by AS15395
PrefixAddressesVisibility
134.213.0.0/1665.5k75/76
146.177.0.0/1665.5k75/76
162.13.0.0/1665.5k75/76
94.236.0.0/1732.8k75/76
5.79.0.0/1816.4k75/76
31.222.128.0/1816.4k75/76
78.136.0.0/1816.4k75/76
83.138.128.0/1816.4k75/76
89.234.0.0/1816.4k75/76
92.52.64.0/1816.4k75/76

Routing health

How AS15395's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid2.6%2
  • Invalid0.0%0
  • No ROA97.4%74

Propagation

  • Globally propagated90% of full-feed peers or more44.7%34
  • Partially propagated40% to 90%2.6%2
  • Seen by few peersUnder 40%52.6%40

Prefix sizes

IPv4 — 75 prefixes

IPv6 — 1 prefixes

  • /324.3B × /64100.0%1

Recent changes

Announcements that started or stopped since 24th Sept 2026.

No announcement by AS15395 started or stopped in this period.

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.