AS12187 Metropolitan Transportation Authority
AS12187 (MTAHQ1) is registered to Metropolitan Transportation Authority in US. It originates 14 prefixes in the global routing table.
Who holds AS12187
Names from RIPE NCC’s daily list of every allocated AS number. The ASN lookup fetches the full WHOIS record live.
What AS12187 announces
Prefixes originated by AS12187 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 AS12187 is reached through
The AS just before AS12187 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 AS12187: RADB 2