AS91 Rensselaer Polytechnic Institute
AS91 (RPI-AS) is registered to Rensselaer Polytechnic Institute in US. It originates 14 prefixes in the global routing table.
Who holds AS91
Names from RIPE NCC’s daily list of every allocated AS number. The ASN lookup fetches the full WHOIS record live.
What AS91 announces
Prefixes originated by AS91 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.
RPKI valid RPKI invalid no ROA covers it
Who AS91 is reached through
The AS just before AS91 in the paths our looking glass collectors hold, for 14 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 AS91: RADB 10 · ARIN 7 · LEVEL3 1