AS15633
Universitat Oberta de Catalunya
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 v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 213.73.32.0/19 | 8.2K |
0.0%
|
Universitat Oberta de Catalunya | ES | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS15633 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 |
|---|---|---|
| 213.73.32.0/20 | 11,606 | 2026-07-31 19:45:32 |
| 213.73.48.0/20 | 11,509 | 2026-07-31 19:45:32 |
| 213.73.32.0/19 | 4,793 | 2026-07-31 19:38:29 |
Frequently Asked Questions
What is AS15633?
AS15633 is an Autonomous System Number assigned to Universitat Oberta de Catalunya. 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 AS15633 announce?
AS15633 announces 8.2K IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in Spain.
Who operates AS15633?
AS15633 is operated by Universitat Oberta de Catalunya. The organization is based in Spain. You can view all IP ranges and related ASNs on the organization page.
What country is AS15633 registered in?
AS15633 is registered in Spain. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
