ResearchRouting table, RPKI, IRR & looking glass

AS20701 CZ.NIC, z.s.p.o.

AS20701 (CZNIC-AS3) is registered to CZ.NIC, z.s.p.o. in CZ. It originates 4 prefixes in the global routing table.

2
IPv4 prefixes
2
IPv6 prefixes
512
IPv4 addresses
100%
RPKI valid

Who holds AS20701

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

AS number
AS20701
Handle
CZNIC-AS3
Organization
CZ.NIC, z.s.p.o.
Country
CZ
ASPA
1 provider

What AS20701 announces

Prefixes originated by AS20701 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
2
IPv6 prefixes
2
IPv4 addresses
512 (2 /24s)
RPKI valid
4 100%
RPKI invalid
0
RPKI not found
0
ROAs naming AS20701
4
With an IRR route object
4 100%

Announced prefixes

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

IPv4 (2)
IPv6 (2)

RPKI valid   RPKI invalid   no ROA covers it

Who AS20701 is reached through

The AS just before AS20701 in the paths our looking glass collectors hold, for 4 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.

Provider authorization

AS20701 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
RIPECZNIC-AS3RIPE-NCC-END-MNT, CZ-NIC-MNT

Route objects with origin AS20701: RIPE 4

as-sets that list AS20701 (9)