ResearchRouting table, RPKI, IRR & looking glass

AS57948 Cobalt Group BV

AS57948 (COBALT) is registered to Cobalt Group BV in BE. It originates 11 prefixes in the global routing table.

10
IPv4 prefixes
1
IPv6 prefixes
2,560
IPv4 addresses
63%
RPKI valid

Who holds AS57948

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

AS number
AS57948
Handle
COBALT
Organization
Cobalt Group BV
Country
BE
ASPA
None published

What AS57948 announces

Prefixes originated by AS57948 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
10
IPv6 prefixes
1
IPv4 addresses
2,560 (10 /24s)
RPKI valid
7 63%
RPKI invalid
0
RPKI not found
4
ROAs naming AS57948
23
With an IRR route object
11 100%

Announced prefixes

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

Who AS57948 is reached through

The AS just before AS57948 in the paths our looking glass collectors hold, for 11 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
RIPECOBALTRIPE-NCC-END-MNT, MNT-DK

Route objects with origin AS57948: RIPE 30

as-sets that list AS57948 (2)