ResearchRouting table, RPKI, IRR & looking glass

AS204943 NTV cable s.r.o.

AS204943 (NTVcable) is registered to NTV cable s.r.o. in CZ. It originates 2 prefixes in the global routing table.

1
IPv4 prefixes
1
IPv6 prefixes
1,024
IPv4 addresses
100%
RPKI valid

Who holds AS204943

Names from RIPE NCC’s daily list of every allocated AS number. The ASN lookup fetches the full WHOIS record live.

AS number
AS204943
Handle
NTVcable
Organization
NTV cable s.r.o.
Country
CZ
ASPA
1 provider

What AS204943 announces

Prefixes originated by AS204943 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
1
IPv6 prefixes
1
IPv4 addresses
1,024 (4 /24s)
RPKI valid
2 100%
RPKI invalid
0
RPKI not found
0
ROAs naming AS204943
2
With an IRR route object
2 100%

Announced prefixes

Each opens its own page: who announces it, the paths our collectors see, its ROAs and route objects.

IPv4 (1)
IPv6 (1)

RPKI valid   RPKI invalid   no ROA covers it

Who AS204943 is reached through

The AS just before AS204943 in the paths our looking glass collectors hold, for 2 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.

Provider authorization

AS204943 publishes an ASPA naming this provider. Check a path.

Routing registry objects

From the mirrored IRR databases (RADB, the five RIRs and more). Look it up live.

Sourceas-nameMaintained by
RIPENTVcableRIPE-NCC-END-MNT, CZ-NTVCABLE-1-MNT

Route objects with origin AS204943: RIPE 2

as-sets that list AS204943 (3)