AS4889 United States Postal Service Office of Inspector General
AS4889 (USPSOIG-AS2) is registered to United States Postal Service Office of Inspector General in US. It originates 1 prefix in the global routing table.
Who holds AS4889
Names from RIPE NCC’s daily list of every allocated AS number. The ASN lookup fetches the full WHOIS record live.
What AS4889 announces
Prefixes originated by AS4889 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 AS4889 is reached through
The AS just before AS4889 in the paths our looking glass collectors hold, for 1 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.