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AS215551KeFF Networks Ltd

United KingdomRegistryRIPE NCC

As of 27th September 2026, AS215551 (KeFF Networks Ltd), a network registered in the United Kingdom with RIPE NCC, originates 1 IPv4 prefix covering 256 addresses. By IPv4 address space that makes it the 59,143rd-largest of the 79,536 networks we see originating IPv4, and the 1,593rd-largest of 2,074 in the United Kingdom. It is seen behind 7 upstream networks, most often AS3399 (Obenet AB) and AS13030 (Init7 (Switzerland) Ltd.), and in front of 9 downstream networks. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

1

IPv6 prefixes

0

IPv4 addresses

256

IPv6 /64s

0

Upstream graph

The networks AS215551 is seen behind, one and two hops out, drawn from real AS paths.

AS215551Toward the internet core
Upstream graph for AS215551: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS215551KeFF Networks LtdThis networkAS3399Obenet ABAS6939Hurricane Electri…AS13030Init7 (Switzerlan…AS24940Hetzner Online Gm…AS39122Blacknight Intern…AS3257GTT Communication…AS18106Viewqwest Pte LtdAS20130Depaul UniversityAS6453TATA Communicatio…AS56662Marcin GondekAS1299Arelion (fka. Tel…AS174Cogent Communicat…

Networks observed one and two hops upstream of AS215551 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

81

adjacent networks

Upstreams
79%
Peers
6580%
Downstreams
911%

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

Upstreams of AS215551
NetworkCountryRelationshipPathsVantage pts
AS3399Obenet ABSEPeer7474
AS13030Init7 (Switzerland) Ltd.CHPeer624
AS39122Blacknight Internet Solutions LimitedIEPeer572
AS6939Hurricane Electric LLCUSPeer275
AS24940Hetzner Online GmbHDEPeer212
AS44901Belcloud LTDBGPeer191
AS24482SG.GSSGPeer192

Prefixes

The largest blocks AS215551 originates, widest first.

Largest prefixes originated by AS215551
PrefixAddressesVisibility
193.189.101.0/2425682/82

Routing health

How AS215551'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

  • Valid100.0%1
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%1
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 1 prefixes

Recent changes

Announcements that started or stopped since 28th Aug 2026.

No announcement by AS215551 started or stopped in this period.

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