subnet.im

AS57758CBWS Holding B.V.

NetherlandsRegistryRIPE NCCTypeContent

As of 27th September 2026, AS57758 (CBWS Holding B.V.), a content network registered in the Netherlands with RIPE NCC, originates 5 IPv4 prefixes covering 1.3k addresses and 11 IPv6 prefixes. By IPv4 address space that makes it the 33,373rd-largest of the 79,523 networks we see originating IPv4, and the 463rd-largest of 1,023 in the Netherlands. It is seen behind 16 upstream networks, most often AS6939 (Hurricane Electric LLC) and AS20562 (Open Peering (Broadband Hosting B.V.)), and in front of 3 downstream networks. 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

5

IPv6 prefixes

11

IPv4 addresses

1.3k

IPv6 /64s

1.5B

Upstream graph

The networks AS57758 is seen behind, one and two hops out, drawn from real AS paths.

AS57758Toward the internet core
Upstream graph for AS57758: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS57758CBWS Holding B.V.This networkAS174Cogent Communicat…AS6939Hurricane Electri…AS20562Open Peering (Bro…AS24785Joint Transit (Br…AS25091IP-Max SAAS151326DCConnect Communi…AS18106Viewqwest Pte LtdAS20130Depaul UniversityAS1299Arelion (fka. Tel…AS14537Continent 8 LLCAS32590Valve CorporationAS8298IPng Networks GmbH

Networks observed one and two hops upstream of AS57758 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

107

adjacent networks

Upstreams
1615%
Peers
8882%
Downstreams
33%

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

Upstreams of AS57758
NetworkCountryRelationshipPathsVantage pts
AS6939Hurricane Electric LLCUSPeer75157
AS20562Open Peering (Broadband Hosting B.V.)NLPeer52144
AS174Cogent Communications, LLCUSPeer26122
AS24785Joint Transit (Broadband Hosting B.V.)NLPeer10910
AS25091IP-Max SACHPeer413
AS7713PT Telkom Indonesia TbkIDPeer393
AS24940Hetzner Online GmbHDEPeer272
AS8298IPng Networks GmbHCHPeer272
AS39122Blacknight Internet Solutions LimitedIEPeer272
AS49544i3D.net B.VNLPeer272

Prefixes

The largest blocks AS57758 originates, widest first.

Largest prefixes originated by AS57758
PrefixAddressesVisibility
185.142.141.0/2425680/81
185.167.204.0/2425680/81
185.167.205.0/2425680/81
185.167.206.0/2425680/81
185.167.207.0/2425680/81
2a0b:b602:1000::/36268M × /6463/64
2a0b:b602:2000::/36268M × /6463/64
2a0b:b602:3000::/36268M × /6463/64
2a0b:b602:4000::/36268M × /6463/64
2a0b:b602:8000::/36268M × /6463/64

Routing health

How AS57758'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%16
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%16
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 5 prefixes

IPv6 — 11 prefixes

  • /36268M × /6445.5%5
  • /3867.1M × /6418.2%2
  • /441M × /649.1%1
  • /4865.5k × /6427.3%3

Recent changes

Announcements that started or stopped since 28th Aug 2026.

No announcement by AS57758 started or stopped in this period.

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