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Autonomous System

AS211321

Stichting NLnet Labs

Announced IPs
1,536
CIDR prefixes
2
ASN
AS211321

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

65/100
Moderate
How this score is built

Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
192.228.88.0/22 1.0K
0.0%
Stichting NLnet Labs US
185.49.142.0/23 512
48.6%
Stichting NLnet Labs NL
185.49.142.0/24 256
0.0%
NL
185.49.143.0/24 256
0.0%
SG

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS211321 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
185.49.142.0/23 5,943 2026-07-18 10:52:47
185.49.142.0/24 2,037 2026-07-17 22:13:40

Frequently Asked Questions

What is AS211321?

AS211321 is an Autonomous System Number assigned to Stichting NLnet Labs. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).

How many IP addresses does AS211321 announce?

AS211321 announces 1.5K IPv4 addresses distributed across 2 routed CIDR prefixes. The network is registered in United States.

Who operates AS211321?

AS211321 is operated by Stichting NLnet Labs. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS211321 registered in?

AS211321 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-18 11:40:32 UTC
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