AS2121
Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
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.
- Baseline (neutral) 65
- Trust score 65 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
About RIPE Network Coordination Centre
RIPE NCC is the regional Internet registry (RIR) for Europe, the Middle East, and parts of Central Asia. Its headquarters are in Amsterdam, the Netherlands, with a branch office in Dubai, UAE.
Top CIDR ranges
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS2121 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.
| Prefix | Announcement samples | Last seen |
|---|---|---|
| 193.0.24.0/21 | 5,869 | 2026-07-27 22:58:23 |
Frequently Asked Questions
What is AS2121?
AS2121 is an Autonomous System Number assigned to Reseaux IP Europeens Network Coordination Centre (RIPE NCC). 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 AS2121 announce?
AS2121 announces 2.0K IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in Bulgaria.
Who operates AS2121?
AS2121 is operated by Reseaux IP Europeens Network Coordination Centre (RIPE NCC). The organization is based in Bulgaria. You can view all IP ranges and related ASNs on the organization page.
What country is AS2121 registered in?
AS2121 is registered in Bulgaria. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
