asn.dev

Autonomous system

AS200070 CZNIC-AS2

Unclassified RIPE NSP

IPv4 addresses 512 2 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly CZ
Exchanges 4 recorded by PCH
Upstreams 25 0 downstream
Flagged prefixes 0 none

Interconnection

Peering at a glance

Full topology · Graph

Internet exchanges

Recorded at 4 exchanges in 4 countries, largest first.

ExchangeLocationTheir address
LINX LON1London, United Kingdom195.66.227.112
NIX.CZ - Neutral Internet eXchange for the Czech RepublicPrague, Czech Republic91.210.16.173
Vienna Internet ExchangeVienna, Austria193.203.0.46
LINX NoVaReston, United States206.55.197.250

Transit providers

25 upstream, 0 downstream and 36 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS1299Arelion Sweden AB35
AS7521INTERNET MULTIFEED CO.26
AS1853ACONET13
AS5459London Internet Exchange Ltd.11
AS24482SG.GS10
AS48185team.blue NV6
AS50300CustodianDC Limited6
AS50304Blix Solutions AS6

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 2 prefixes · 512 addresses IPv6 1 prefixes

CountryNamePrefixes
CZCzechia3

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS200070
Registry name
CZNIC-AS2
Registrant
CZ-NIC-MNT
Abuse contact
abuse@nic.cz
Registered
2013-10-16
Last changed
2017-11-15
Allocation
allocated

Declared

PeeringDB profile

self-reported
Name
CZ.NIC, z.s.p.o.
Network type
NSP
Scope
Global
Traffic ratio
Balanced
Peering policy
Open
IRR as-set
AS-CZNIC-TRANSIT
Present at
7 exchanges
Website
https://www.nic.cz/

PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 10 valid, 0 with no ROA
ROAs
10 authorising AS200070
ASPA
17 declared providers
IRR
80% registered · 8 of 10 announcements 2 other origin
Route objects
9 naming AS200070

Reputation

Classification and threat

Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.

Spamhaus DROP

Not on ASN-DROP The network as a whole is not listed.

No DROP prefixes None of its announced space is on the DROP prefix list.

Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 432 networks and 1,768 prefixes, as published 2026-10-12. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.

FBI IC3

No IC3 indicators Nothing from the FBI IC3 feed.

IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.

Elsewhere

Cross-check