ResearchRouting table, RPKI, IRR & looking glass

AS39521 TNGNET B.V.

AS39521 (TNGNET) is registered to TNGNET B.V. in NL. It originates 46 prefixes in the global routing table.

42
IPv4 prefixes
4
IPv6 prefixes
20,736
IPv4 addresses
100%
RPKI valid

Who holds AS39521

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

AS number
AS39521
Handle
TNGNET
Organization
TNGNET B.V.
Country
NL
ASPA
None published

What AS39521 announces

Prefixes originated by AS39521 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
42
IPv6 prefixes
4
IPv4 addresses
20,736 (81 /24s)
RPKI valid
46 100%
RPKI invalid
0
RPKI not found
0
ROAs naming AS39521
47
With an IRR route object
46 100%

Who AS39521 is reached through

The AS just before AS39521 in the paths our looking glass collectors hold, for 46 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.