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 →AS16246 — global IP footprint
Cities where AS16246 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 188.175.0.0/16 | 65.5K |
89.9%
|
O2 Czech Republic, a.s. | CZ | Moravian-Silesian Region | Frýdek-Místek |
| 94.74.192.0/18 | 16.4K |
87.2%
|
O2 Czech Republic, a.s. | CZ | Prague | Prague |
| 82.150.160.0/19 | 8.2K |
32.2%
|
O2 Czech Republic, a.s. | CZ | Ústí nad Labem Region | Lovosice |
| 86.63.192.0/19 | 8.2K |
45.0%
|
O2 Czech Republic, a.s. | CZ | Olomouc Region | Olomouc |
| 92.240.160.0/19 | 8.2K |
92.6%
|
O2 Czech Republic, a.s. | CZ | Liberec Region | Česká Lípa |
| 213.180.32.0/19 | 8.2K |
43.6%
|
O2 Czech Republic, a.s. | CZ | Prague | Prague |
| 95.143.128.0/20 | 4.1K |
100.0%
|
O2 Czech Republic, a.s. | CZ | — | — |
| 176.98.96.0/20 | 4.1K |
90.7%
|
O2 Czech Republic, a.s. | CZ | Central Bohemia | Příbram |
| 178.17.96.0/20 | 4.1K |
99.1%
|
O2 Czech Republic, a.s. | CZ | Carlsbad Region | Chodov |
| 77.87.232.0/21 | 2.0K |
99.2%
|
O2 Czech Republic, a.s. | CZ | Prague | Prague |
| 78.108.152.0/21 | 2.0K |
99.2%
|
O2 Czech Republic, a.s. | CZ | — | — |
| 91.197.116.0/22 | 1.0K |
99.0%
|
O2 Czech Republic, a.s. | CZ | — | — |
| 185.15.252.0/22 | 1.0K |
39.5%
|
O2 Czech Republic, a.s. | CZ | South Bohemian Region | Mirotice |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS16246 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 |
|---|---|---|
| 185.15.252.0/22 | 28,310 | 2026-09-11 20:45:21 |
| 77.87.232.0/21 | 11,153 | 2026-09-11 20:45:21 |
| 91.197.116.0/22 | 11,110 | 2026-09-11 20:45:21 |
| 178.17.96.0/20 | 11,107 | 2026-09-11 20:45:21 |
| 92.240.160.0/19 | 9,683 | 2026-09-11 20:45:21 |
| 176.98.96.0/20 | 9,058 | 2026-09-11 20:45:21 |
| 78.108.152.0/21 | 8,934 | 2026-09-11 20:45:20 |
| 86.63.192.0/19 | 8,926 | 2026-09-11 20:45:20 |
| 188.175.0.0/16 | 8,914 | 2026-09-11 20:47:44 |
| 94.74.192.0/18 | 8,903 | 2026-09-11 20:45:20 |
| 95.143.128.0/20 | 8,892 | 2026-09-11 20:45:20 |
| 82.150.160.0/19 | 8,702 | 2026-09-11 20:45:20 |
| 213.180.32.0/19 | 8,541 | 2026-09-11 20:45:20 |
Frequently Asked Questions
What is AS16246?
AS16246 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 AS16246 announce?
AS16246 announces 133.1K IPv4 addresses distributed across 13 routed CIDR prefixes. The network is registered in Czechia.
Who operates AS16246?
AS16246 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 AS16246 registered in?
AS16246 is registered in Czechia. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
