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Data as of Nov 11, 2026

131.174.0.0/16

No anonymizer space · no proxy exits in 30 days

Surf B.V. · space held by Radboud Universiteit Nijmegen

Announcement
this exact prefix
RPKI valid
Announced by
AS1103
Type
Business
Risk
0 / 100 · Low

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
131.174.0.0/1665,536RU-NETRadboud Universiteit Nijmegen (ORG-RU11-RIPE) · NLLEGACY—cert@ru.nl
└ 131.174.144.0/204,096RadboudUMC-NETRadboud UMCLEGACYJun 14, 2018cert@radboudumc.nl
└ 131.174.160.0/212,048RadboudUMC-NETRadboud UMCLEGACYJun 14, 2018cert@radboudumc.nl
└ 131.174.172.0/221,024RadboudUMC-NETRadboud UMCLEGACYJun 14, 2018cert@radboudumc.nl
└ 131.174.180.0/221,024RadboudUMC-NETRadboud UMCLEGACYJun 14, 2018cert@radboudumc.nl
└ 131.174.196.0/221,024RadboudUMC-NETRadboud UMCLEGACYJun 14, 2018cert@radboudumc.nl
└ 131.174.220.0/221,024RadboudUMC-NETRadboud UMCLEGACYJun 14, 2018cert@radboudumc.nl
└ 131.174.228.0/221,024RadboudUMC-NETRadboud UMCLEGACYJun 14, 2018cert@radboudumc.nl
└ 131.174.244.0/221,024RadboudUMC-NETRadboud UMCLEGACYJun 14, 2018cert@radboudumc.nl

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Routing timeline

Who has announced this prefix

Summary

Routing history

Pattern
Stable
First seen
May 2005
Current origin since
May 2005 · 22 yr
Origin networks
1