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AS212450Juan Thielmann

SpainRegistryRIPE NCC

As of 11th November 2026, AS212450 (Juan Thielmann), a network registered in Spain with RIPE NCC, originates 1 IPv4 prefix covering 256 addresses and 2 IPv6 prefixes. By IPv4 address space that makes it the 59,976th-largest of the 80,743 networks we see originating IPv4, and the 790th-largest of 937 in Spain. It is seen behind 3 upstream networks, most often AS53667 (FranTech Solutions) and AS20473 (The Constant Company, LLC). Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 67% of its routes reach at least 90% of full-feed peers, and 1 prefix is also originated by another network.

At a glance

IPv4 prefixes

1

IPv6 prefixes

2

IPv4 addresses

256

IPv6 /64s

131k

Upstream graph

The networks AS212450 is seen behind, one and two hops out, drawn from real AS paths.

AS212450Toward the internet core
Upstream graph for AS212450: 7 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS212450Juan ThielmannThis networkAS20473The Constant Comp…AS53667FranTech SolutionsAS199524Gcore S.A.AS2914NTT America, Inc.AS174Cogent Communicat…AS1299Arelion (fka. Tel…AS6939Hurricane Electri…

Networks observed one and two hops upstream of AS212450 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

9

adjacent networks

Upstreams
333%
Peers
667%
Downstreams
00%

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

Upstreams of AS212450
NetworkCountryRelationshipPathsVantage pts
AS53667FranTech SolutionsUSPeer6363
AS20473The Constant Company, LLCUSPeer6262
AS199524Gcore S.A.LUAdjacent5454

Prefixes

The largest blocks AS212450 originates, widest first.

Largest prefixes originated by AS212450
PrefixAddressesVisibility
187.52.47.0/2425654/76
2a0b:b87:ffa5::/4865.5k × /6462/63
2a0f:9400:693c::/4865.5k × /6463/63

Routing health

How AS212450'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 more66.7%2
  • Partially propagated40% to 90%33.3%1
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 1 prefixes

IPv6 — 2 prefixes

  • /4865.5k × /64100.0%2

Recent changes

Announcements that started or stopped since 12th Oct 2026.

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