ResearchRouting table, RPKI, IRR & looking glass

AS42541 Fiberby ApS

AS42541 (FIBERBY) is registered to Fiberby ApS in DK. It originates 6 prefixes in the global routing table.

5
IPv4 prefixes
1
IPv6 prefixes
11,008
IPv4 addresses
100%
RPKI valid

Who holds AS42541

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

AS number
AS42541
Handle
FIBERBY
Organization
Fiberby ApS
Country
DK
ASPA
3 providers

What AS42541 announces

Prefixes originated by AS42541 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
5
IPv6 prefixes
1
IPv4 addresses
11,008 (43 /24s)
RPKI valid
6 100%
RPKI invalid
0
RPKI not found
0
ROAs naming AS42541
7
With an IRR route object
6 100%

Announced prefixes

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

IPv4 (5)
IPv6 (1)

RPKI valid   RPKI invalid   no ROA covers it

Who AS42541 is reached through

The AS just before AS42541 in the paths our looking glass collectors hold, for 6 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.

Provider authorization

AS42541 publishes an ASPA naming these providers. 4 ASes name it as a provider in theirs. Check a path.

The 4 ASes that name AS42541 as a provider