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AS numbers

AS43996 Booking.com

AS43996 is operated by Booking.com and registered with RIPE NCC (NL) since 2007-10-31.

It announces 14 IPv4 and 7 IPv6 prefixes, 100% of them RPKI valid.

RIPE RIS sees 37 upstream and peer networks and 0 downstream networks next to it.

PeeringDB lists it as a Content network at 7 internet exchanges and 3 facilities. Its peering policy is open.

NameBooking.com
Registry (RIR)RIPE NCC
CountryNetherlands (NL)
Delegated on2007-10-31
Network typeContent, Global
Peering policyOpen
IRR as-setAS-BOOKING
Prefixes (IPv4 / IPv6)14 / 7
RPKI valid100% (21 / 21)
Upstreams and peers37
Downstream networks0
Websitebooking.com

Routing health

  • AS43996 announces 14 IPv4 and 7 IPv6 prefixes.
  • All 21 announced prefixes are RPKI valid.
  • 37 upstreams and peers, 0 downstream networks seen.

For every check with the fix (IRR route objects, the RPKI state of each route, reverse DNS and the registration), run the full network report.

Announced prefixes 21

  • 5.57.16.0/22
  • 5.57.16.0/24
  • 5.57.17.0/24
  • 5.57.18.0/24
  • 5.57.19.0/24
  • 5.57.22.0/24
  • 37.10.0.0/24
  • 37.10.13.0/24
  • 37.10.37.0/24
  • 37.10.38.0/24
  • 37.10.56.0/23
  • 37.10.56.0/24
  • 37.10.57.0/24
  • 37.10.60.0/23
  • 2a01:5040:12::/48
  • 2a01:5040:20::/48
  • 2a01:5040:40::/48
  • 2a01:5040::/36
  • 2a01:5040::/48
  • 2a01:5041:2005::/48
  • 2a01:5041:2009::/48

Upstreams and peers 37

The networks RIPE RIS sees next to AS43996 in BGP paths, the most visible first.

Peering

Peering policy: Open. Suggested max-prefix limits: 100 IPv4, 100 IPv6. PeeringDB record

Internet exchanges 7
ExchangePortsSpeedRoute server
AMS-IX120GYes
DE-CIX Frankfurt: DE-CIX Frankfurt Peering LAN120GYes
DE-CIX Marseille: DE-CIX Marseille Peering LAN11GYes
LINX LON1: Main120GYes
LINX LON2110GYes
MegaIX Frankfurt110GYes
NL-ix: Main110GYes
Facilities 3
FacilityCityCountry
Digital Realty Frankfurt FRA1-27FrankfurtDE
Equinix LD5 - London, SloughSloughGB
Global Switch AmsterdamAmsterdamNL

More about AS43996

Sources: RIR delegation data and PeeringDB (updated daily); routing from RIPEstat (RIPE NCC RIS and RPKI), refreshed daily. Routing data from 2026-11-12 18:50 UTC. The country is where the AS number was registered, not necessarily where the network operates.