AS40043 Brown University Health
AS40043 (LIFESPAN) is registered to Brown University Health in US. It originates 3 prefixes in the global routing table.
Who holds AS40043
Names from RIPE NCC’s daily list of every allocated AS number. The ASN lookup fetches the full WHOIS record live.
What AS40043 announces
Prefixes originated by AS40043 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).
Announced prefixes
Each opens its own page: who announces it, the paths our collectors see, its ROAs and route objects.
Who AS40043 is reached through
The AS just before AS40043 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.
Route objects with origin AS40043: LEVEL3 3 · RADB 3