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AS57172Global Layer B.V.

NetherlandsRegistryRIPE NCC

As of 11th November 2026, AS57172 (Global Layer B.V.), a network registered in the Netherlands with RIPE NCC, originates 2 IPv4 prefixes covering 512 addresses. By IPv4 address space that makes it the 49,318th-largest of the 80,743 networks we see originating IPv4, and the 670th-largest of 1,042 in the Netherlands. It is seen behind 1 upstream network, most often AS49453 (Global Layer B.V.). 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

2

IPv6 prefixes

0

IPv4 addresses

512

IPv6 /64s

0

Upstream graph

The networks AS57172 is seen behind, one and two hops out, drawn from real AS paths.

AS57172Toward the internet core
Upstream graph for AS57172: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS57172Global Layer B.V.This networkAS49453Global Layer B.V.AS2914NTT America, Inc.AS5405Inter.link GmbH

Networks observed one and two hops upstream of AS57172 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 AS57172
NetworkCountryRelationshipPathsVantage pts
AS49453Global Layer B.V.NLPeer15276

Prefixes

The largest blocks AS57172 originates, widest first.

Largest prefixes originated by AS57172
PrefixAddressesVisibility
37.123.208.0/2425676/76
109.202.97.0/2425676/76

Routing health

How AS57172'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%2
  • Invalid0.0%0
  • No ROA0.0%0

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 — 2 prefixes

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS57172 started or stopped in this period.

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