AS81 MCNC
AS81 (NCREN) is registered to MCNC in US. It originates 138 prefixes in the global routing table.
Who holds AS81
Names from RIPE NCC’s daily list of every allocated AS number. The ASN lookup fetches the full WHOIS record live.
What AS81 announces
Prefixes originated by AS81 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.
Show 14 more
RPKI valid RPKI invalid no ROA covers it
Who AS81 is reached through
The AS just before AS81 in the paths our looking glass collectors hold, for 60 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.
| Source | as-name | Maintained by |
|---|---|---|
| ARIN | NCREN | MNT-MCNC-Z |
| RADB | NCREN | MAINT-AS81 |
Route objects with origin AS81: ARIN 189 · RADB 45 · LEVEL3 32