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
- Enterprise allocation +4
- Trust score 69 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
About Nej.cz
Company in the Czech Republic.
Network profile
Source: PeeringDB →Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 80.243.96.0/20 | 4.1K |
91.1%
|
O2 Czech Republic, a.s. | CZ | Prague | Prague |
| 109.239.64.0/20 | 4.1K |
0.0%
|
O2 Czech Republic, a.s. | CZ | Prague | Prague |
| 217.195.160.0/20 | 4.1K |
50.2%
|
O2 Czech Republic, a.s. | CZ | Prague | Prague |
| 94.143.168.0/21 | 2.0K |
89.8%
|
O2 Czech Republic, a.s. | CZ | Prague | Prague |
| 194.59.240.0/22 | 1.0K |
98.8%
|
O2 Czech Republic, a.s. | CZ | Prague | Prague |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS29321 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 |
|---|---|---|
| 80.243.96.0/20 | 5,074 | 2026-07-27 23:38:23 |
| 94.143.168.0/21 | 5,072 | 2026-07-27 23:38:23 |
| 194.59.240.0/22 | 5,034 | 2026-07-27 23:38:23 |
| 109.239.64.0/20 | 5,034 | 2026-07-27 23:38:23 |
| 217.195.160.0/20 | 4,989 | 2026-07-27 23:38:23 |
Frequently Asked Questions
What is AS29321?
AS29321 is an Autonomous System Number assigned to O2 Czech Republic, a.s.. 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 AS29321 announce?
AS29321 announces 15.4K IPv4 addresses distributed across 5 routed CIDR prefixes. The network is registered in Czechia.
Who operates AS29321?
AS29321 is operated by O2 Czech Republic, a.s.. The organization is based in Czechia. You can view all IP ranges and related ASNs on the organization page.
What country is AS29321 registered in?
AS29321 is registered in Czechia. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
