LAYER3 INTEL
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Data as of Nov 5, 2026

194.171.96.0/21

No anonymizer space · no proxy exits in 30 days

Stichting Nederlandse Wetenschappelijk Onderzoek Instituten · space held by Surf B.V.

Announcement
this exact prefix
RPKI valid
Announced by
AS1104
Type
Business
Risk
0 / 100 · Low

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
194.171.0.0/16
since May 2005
AS1103Business55Surf B.V.

Registrations in this block

The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
194.171.0.0/1665,536NL-SURF-950612Surf B.V. (ORG-SB3-RIPE) · NLALLOCATED PAJan 21, 2002cert@surfcert.nl
└ 194.171.96.0/212,048NIKHEF-NETNIKHEF Big GridSUB-ALLOCATED PAJun 6, 2019cert@surfcert.nl
via NL-SURF-950612
└ 194.171.96.32/2732NIKHEF-NET-BIGGRID-OEXP-NORDICunknownASSIGNED PAApr 18, 2022security@nikhef.nl
└ 194.171.96.128/25128NIKHEF-NDPF-OPNSTORAGEunknownASSIGNED PAJun 6, 2019security@nikhef.nl

A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
IPv4 market

Holder

Holder in the market →
Organization
Surf B.V.
Handle
ORG-SB3-RIPE
Range
194.171.0.0/16
Registration type
ALLOCATED PA
Record created
Jan 21, 2002
Reallocated to
NIKHEF Big Grid
Reallocated range
194.171.96.0/21
Reallocation type
SUB-ALLOCATED PA
Reallocated
Jun 6, 2019
Origin network

AS1104

NL
Name
Stichting Nederlandse Wetenschappelijk Onderzoek Instituten
Type
Education
Registered
Sep 1, 1993
Domain
nikhef.nl
Website
www.nikhef.nl/
Industry
Research and Development Organizations
Spamhaus ASN-DROP
not listed