subnet.im

AS24851Netcetera Ltd.

Isle of ManRegistryRIPE NCC

As of 12th November 2026, AS24851 (Netcetera Ltd.), a network registered in Isle of Man with RIPE NCC, originates 3 IPv4 prefixes covering 768 addresses. By IPv4 address space that makes it the 45,683rd-largest of the 80,772 networks we see originating IPv4, and the 12th-largest of 16 in Isle of Man. It is seen behind 1 upstream network, most often AS16276 (OVH SAS). 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

3

IPv6 prefixes

0

IPv4 addresses

768

IPv6 /64s

0

Upstream graph

The networks AS24851 is seen behind, one and two hops out, drawn from real AS paths.

AS24851Toward the internet core
Upstream graph for AS24851: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS24851Netcetera Ltd.This networkAS16276OVH SASAS174Cogent Communicat…AS1299Arelion (fka. Tel…

Networks observed one and two hops upstream of AS24851 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 AS24851
NetworkCountryRelationshipPathsVantage pts
AS16276OVH SASFRPeer23478

Prefixes

The largest blocks AS24851 originates, widest first.

Largest prefixes originated by AS24851
PrefixAddressesVisibility
82.21.123.0/2425678/78
82.25.22.0/2425678/78
82.25.27.0/2425678/78

Routing health

How AS24851'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%3
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%3
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 3 prefixes

Recent changes

Announcements that started or stopped since 13th Oct 2026.

No announcement by AS24851 started or stopped in this period.

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