ResearchRouting table, RPKI, IRR & looking glass

AS6740 CEZNET s.r.o.

AS6740 (INEXT-CZ-ADA) is registered to CEZNET s.r.o. in CZ. It originates 4 prefixes in the global routing table.

4
IPv4 prefixes
0
IPv6 prefixes
41,984
IPv4 addresses
100%
RPKI valid

Who holds AS6740

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

AS number
AS6740
Handle
INEXT-CZ-ADA
Organization
CEZNET s.r.o.
Country
CZ
ASPA
None published

What AS6740 announces

Prefixes originated by AS6740 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
4
IPv6 prefixes
0
IPv4 addresses
41,984 (164 /24s)
RPKI valid
4 100%
RPKI invalid
0
RPKI not found
0
ROAs naming AS6740
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 (4)

RPKI valid   RPKI invalid   no ROA covers it

Who AS6740 is reached through

The AS just before AS6740 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.

Routing registry objects

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

Sourceas-nameMaintained by
RIPEINEXT-CZ-ADARIPE-NCC-END-MNT, INEXT-CZ-MNT, CEZNET-MNT

Route objects with origin AS6740: RIPE 4

as-sets that list AS6740 (3)