AS50398
Fast Communication, s.r.o.
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 →
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 91.245.0.0/21 | 2.0K |
63.1%
|
Fast Communication, s.r.o. | CZ | — | — |
| 91.219.44.0/22 | 1.0K |
72.5%
|
Fast Communication, s.r.o. | CZ | Prague | Prague |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS50398 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 |
|---|---|---|
| 91.245.7.0/24 | 9,938 | 2026-08-02 05:46:59 |
| 91.245.0.0/22 | 9,932 | 2026-08-02 05:46:59 |
| 91.219.44.0/22 | 9,901 | 2026-08-02 05:46:59 |
| 91.245.4.0/24 | 9,860 | 2026-08-02 05:46:59 |
| 91.245.5.0/24 | 9,805 | 2026-08-02 05:46:59 |
| 91.245.6.0/24 | 9,778 | 2026-08-02 05:46:59 |
| 91.245.0.0/21 | 9,022 | 2026-08-02 06:45:31 |
Frequently Asked Questions
What is AS50398?
AS50398 is an Autonomous System Number assigned to Fast Communication, s.r.o.. 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 AS50398 announce?
AS50398 announces 3.1K IPv4 addresses distributed across 2 routed CIDR prefixes. The network is registered in Czechia.
Who operates AS50398?
AS50398 is operated by Fast Communication, s.r.o.. The organization is based in Czechia. You can view all IP ranges and related ASNs on the organization page.
What country is AS50398 registered in?
AS50398 is registered in Czechia. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
