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AS207149Julien Sansonnens

SwitzerlandRegistryRIPE NCCTypeEyeball

As of 27th September 2026, AS207149 (Julien Sansonnens), an access network registered in Switzerland with RIPE NCC, originates 1 IPv4 prefix covering 256 addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 59,127th-largest of the 79,525 networks we see originating IPv4, and the 562nd-largest of 739 in Switzerland. It is seen behind 6 upstream networks, most often AS34927 (iFog GmbH) and AS212895 (Johannes Ernst). 50% of its announcements have 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

1

IPv4 addresses

256

IPv6 /64s

1M

Upstream graph

The networks AS207149 is seen behind, one and two hops out, drawn from real AS paths.

AS207149Toward the internet core
Upstream graph for AS207149: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS207149Julien SansonnensThis networkAS8298IPng Networks GmbHAS8772NetAssist LLCAS34927iFog GmbHAS212895Johannes ErnstAS393577Tritan DevelopmentAS8283Netwerkvereniging…AS25091IP-Max SAAS3491PCCW Global (HK) …AS9002RETN LimitedAS6939Hurricane Electri…AS52025ParadoxNetworks L…AS174Cogent Communicat…

Networks observed one and two hops upstream of AS207149 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

21

adjacent networks

Upstreams
629%
Peers
1571%
Downstreams
00%

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

Upstreams of AS207149
NetworkCountryRelationshipPathsVantage pts
AS34927iFog GmbHCHPeer128128
AS212895Johannes ErnstDEPeer99
AS393577Tritan DevelopmentUSPeer22
AS8772NetAssist LLCUAPeer22
AS8298IPng Networks GmbHCHPeer11
AS41051Freetransit Project (Openfactory GmbH)CHPeer11

Prefixes

The largest blocks AS207149 originates, widest first.

Largest prefixes originated by AS207149
PrefixAddressesVisibility
44.31.107.0/2425680/81
2a0c:b641:270::/441M × /6463/64

Routing health

How AS207149'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

  • Valid50.0%1
  • Invalid0.0%0
  • No ROA50.0%1

Propagation

  • Globally propagated90% of full-feed peers or more100.0%2
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 1 prefixes

IPv6 — 1 prefixes

  • /441M × /64100.0%1

Recent changes

Announcements that started or stopped since 28th Aug 2026.

No announcement by AS207149 started or stopped in this period.

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