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 →
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.
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 185.43.135.0/24 | 256 |
0.8%
|
CZ.NIC, z.s.p.o. | CZ | — | — |
| 193.17.47.0/24 | 256 |
0.4%
|
CZ.NIC, z.s.p.o. | CZ | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS20701 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 |
|---|---|---|
| 185.43.135.0/24 | 11,487 | 2026-07-30 23:48:02 |
| 193.17.47.0/24 | 11,225 | 2026-07-30 23:48:31 |
Frequently Asked Questions
What is AS20701?
AS20701 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 AS20701 announce?
AS20701 announces 512 IPv4 addresses distributed across 2 routed CIDR prefixes. The network is registered in Czechia.
Who operates AS20701?
AS20701 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 AS20701 registered in?
AS20701 is registered in Czechia. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
