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
- Academic allocation +6
- Trust score 71 / 100
Experimental · trust-vectors model v1.2.1 — a transparent heuristic, not a definitive verdict. How it works →
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 137.43.0.0/16 | 65.5K |
48.1%
|
University College Dublin | IE | Leinster | Bray |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS2850 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 |
|---|---|---|
| 137.43.0.0/16 | 10,882 | 2026-10-19 05:47:54 |
Frequently Asked Questions
What is AS2850?
AS2850 is an Autonomous System Number assigned to University College Dublin. 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 AS2850 announce?
AS2850 announces 65.5K IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in Ireland.
Who operates AS2850?
AS2850 is operated by University College Dublin. The organization is based in Ireland. You can view all IP ranges and related ASNs on the organization page.
What country is AS2850 registered in?
AS2850 is registered in Ireland. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
