ResearchRouting table, RPKI, IRR & looking glass

AS206551 Thomas Butter

AS206551 (BUTTER) is registered to Thomas Butter in DE. It originates 3 prefixes in the global routing table.

1
IPv4 prefixes
2
IPv6 prefixes
1,024
IPv4 addresses
66%
RPKI valid

Who holds AS206551

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

AS number
AS206551
Handle
BUTTER
Organization
Thomas Butter
Country
DE
ASPA
None published

What AS206551 announces

Prefixes originated by AS206551 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
2
IPv4 addresses
1,024 (4 /24s)
RPKI valid
2 66%
RPKI invalid
0
RPKI not found
1
ROAs naming AS206551
2
With an IRR route object
3 100%

Announced prefixes

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

IPv4 (1)
IPv6 (2)

RPKI valid   RPKI invalid   no ROA covers it

Who AS206551 is reached through

The AS just before AS206551 in the paths our looking glass collectors hold, for 3 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
RIPEBUTTERRIPE-NCC-END-MNT, TBUTTER

Route objects with origin AS206551: RIPE 3

as-sets that list AS206551 (4)