AS28839
United Nations Office at Vienna
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
- Government allocation +8
- Trust score 73 / 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 |
|---|---|---|---|---|---|---|
| 83.68.138.0/24 | 256 |
2.0%
|
United Nations Office at Vienna | AT | — | — |
| 193.138.94.0/24 | 256 |
24.2%
|
United Nations Office at Vienna | AT | State of Vienna | Vienna |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS28839 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 |
|---|---|---|
| 83.68.138.0/24 | 7,450 | 2026-07-24 13:17:40 |
| 193.138.94.0/24 | 5,870 | 2026-07-24 13:09:02 |
Frequently Asked Questions
What is AS28839?
AS28839 is an Autonomous System Number assigned to United Nations Office at Vienna. 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 AS28839 announce?
AS28839 announces 512 IPv4 addresses distributed across 2 routed CIDR prefixes. The network is registered in Austria.
Who operates AS28839?
AS28839 is operated by United Nations Office at Vienna. The organization is based in Austria. You can view all IP ranges and related ASNs on the organization page.
What country is AS28839 registered in?
AS28839 is registered in Austria. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
