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
- Multiple-origin (MOAS) routing anomaly −12
- Trust score 53 / 100
Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
About CZ.NIC
CZ.NIC is a Czech interest association of legal persons established by leading Internet service providers in 1998. The main activity of the association is administration of domain names .cz and 0.2.4.e164.arpa (ENUM), administration of .cz top-level domains and education in the area of domain names.
⚠ 4 MOAS prefixes — multiple origin ASNs detected
All MOAS anomalies →A previously stable prefix originated by AS25192 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.
| Prefix | Origin ASNs | Last detected (UTC) |
|---|---|---|
| 193.29.206.0/24 | AS25192, AS200070 | 2026-07-18 11:37:44 |
| 212.237.229.0/24 | AS25192, AS200070 | 2026-07-17 19:22:38 |
| 185.43.134.0/24 | AS25192, AS200070 | 2026-07-17 19:22:38 |
| 194.0.14.0/24 | AS25192, AS200070 | 2026-07-17 16:37:37 |
Network profile
Source: PeeringDB →Present at 13 internet exchanges: DE-CIX Frankfurt: DE-CIX Frankfurt Peering LAN, NIX.CZ: Public peering VLAN, NIX.SK, Netnod Stockholm GREEN -- MTU1500: STH-A -- MTU1500, Netnod Stockholm BLUE -- MTU1500: STH-B -- MTU1500, Netnod Stockholm BLUE -- MTU4470: STH-B -- MTU4470, Netnod Stockholm GREEN -- MTU4470: STH-A -- MTU4470, IX.br (PTT.br) São Paulo: ATM/MPLA, MIX-IT, SIX Seattle: MTU 1500, …
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 217.31.192.0/20 | 4.1K |
13.2%
|
CZ.NIC, z.s.p.o. | CZ | — | — |
| 185.43.132.0/23 | 512 |
0.0%
|
CZ.NIC, z.s.p.o. | CZ | — | — |
| 194.0.12.0/23 | 512 |
0.4%
|
CZ.NIC, z.s.p.o. | CZ | — | — |
| 185.43.134.0/24 | 256 |
4.7%
|
CZ.NIC, z.s.p.o. | CZ | — | — |
| 193.29.206.0/24 | 256 |
0.8%
|
CZ.NIC, z.s.p.o. | CZ | — | — |
| 212.237.229.0/24 | 256 |
0.0%
|
— | CZ | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS25192 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 |
|---|---|---|
| 217.31.192.0/20 | 235,089 | 2026-07-18 11:29:30 |
| 194.0.12.0/24 | 43,972 | 2026-07-18 11:27:01 |
| 194.0.13.0/24 | 39,660 | 2026-07-18 11:25:12 |
| 212.237.229.0/24 | 26,785 | 2026-07-18 11:27:01 |
| 185.43.134.0/24 | 21,596 | 2026-07-18 10:52:27 |
| 193.29.206.0/24 | 10,265 | 2026-07-18 10:52:56 |
| 185.43.132.0/22 | 4,560 | 2026-07-18 10:52:56 |
| 194.0.14.0/24 | 1,631 | 2026-07-18 07:38:18 |
Frequently Asked Questions
What is AS25192?
AS25192 is an Autonomous System Number assigned to CZ.NIC, z.s.p.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 AS25192 announce?
AS25192 announces 5.6K IPv4 addresses distributed across 5 routed CIDR prefixes. The network is registered in Czechia.
Who operates AS25192?
AS25192 is operated by CZ.NIC, z.s.p.o.. The organization is based in Czechia. You can view all IP ranges and related ASNs on the organization page.
What country is AS25192 registered in?
AS25192 is registered in Czechia. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
