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 →
Network profile
Source: PeeringDB →Present at 1 internet exchange: SOX Serbia
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 160.99.0.0/16 | 65.5K |
7.2%
|
University of Nis | RS | Nišava | Niš |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS13303 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 |
|---|---|---|
| 160.99.0.0/16 | 16,012 | 2026-07-24 16:12:49 |
| 160.99.0.0/17 | 12,258 | 2026-07-24 15:47:29 |
| 160.99.128.0/17 | 11,915 | 2026-07-24 15:47:29 |
Frequently Asked Questions
What is AS13303?
AS13303 is an Autonomous System Number assigned to University of Nis. 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 AS13303 announce?
AS13303 announces 65.5K IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in Serbia.
Who operates AS13303?
AS13303 is operated by University of Nis. The organization is based in Serbia. You can view all IP ranges and related ASNs on the organization page.
What country is AS13303 registered in?
AS13303 is registered in Serbia. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
