subnet.im

AS219271Mathias Jellesmark Fiskbaek trading as Beriffa Group

DenmarkRegistryRIPE NCC

As of 27th September 2026, AS219271 (Mathias Jellesmark Fiskbaek trading as…), a network registered in Denmark with RIPE NCC, originates 4 IPv6 prefixes. It is seen behind 4 upstream networks, most often AS34872 (Servperso Systems) and AS7768 (Nuh Ahmet Firat trading as TEKNET…). 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

0

IPv6 prefixes

4

IPv4 addresses

0

IPv6 /64s

271M

Upstream graph

The networks AS219271 is seen behind, one and two hops out, drawn from real AS paths.

AS219271Toward the internet core
Upstream graph for AS219271: 10 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS219271Mathias Jellesmar…This networkAS7768Nuh Ahmet Firat t…AS8298IPng Networks GmbHAS25091IP-Max SAAS34872Servperso SystemsAS9121Turk TelekomAS44901Belcloud LTDAS8283Netwerkvereniging…AS56662Marcin GondekAS6939Hurricane Electri…AS601443W Infra B.V.

Networks observed one and two hops upstream of AS219271 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

19

adjacent networks

Upstreams
421%
Peers
1579%
Downstreams
00%

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

Upstreams of AS219271
NetworkCountryRelationshipPathsVantage pts
AS34872Servperso SystemsBEPeer24461
AS7768Nuh Ahmet Firat trading as TEKNET YAZILIM VE BILGISAYAR TEKNOLOJILERITRPeer41
AS25091IP-Max SACHPeer41
AS8298IPng Networks GmbHCHPeer41

Prefixes

The largest blocks AS219271 originates, widest first.

Largest prefixes originated by AS219271
PrefixAddressesVisibility
2a0f:6280:b000::/36268M × /6464/64
2a06:9801:f20::/441M × /6464/64
2a0c:b641:910::/441M × /6464/64
2a06:9801:f12::/4865.5k × /6464/64

Routing health

How AS219271'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%4
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%4
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv6 — 4 prefixes

  • /36268M × /6425.0%1
  • /441M × /6450.0%2
  • /4865.5k × /6425.0%1

Recent changes

Announcements that started or stopped since 28th Aug 2026.

  • Announced2a0f:6280:b000::/3622nd Sept 2026
  • Withdrawn2a0c:b641:917::/4821st Sept 2026
  • Withdrawn2a0c:b641:918::/4821st Sept 2026
  • Withdrawn2a0c:b641:91a::/4821st Sept 2026
  • Withdrawn2a0c:b641:91b::/4821st Sept 2026
  • Withdrawn2a0c:b641:91c::/4821st Sept 2026

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