ResearchRouting table, RPKI, IRR & looking glass

AS27274 Central Michigan University

AS27274 (CMICH) is registered to Central Michigan University in US. It originates 4 prefixes in the global routing table.

3
IPv4 prefixes
1
IPv6 prefixes
139,264
IPv4 addresses
50%
RPKI valid

Who holds AS27274

Names from RIPE NCC’s daily list of every allocated AS number. The ASN lookup fetches the full WHOIS record live.

AS number
AS27274
Handle
CMICH
Organization
Central Michigan University
Country
US
ASPA
None published

What AS27274 announces

Prefixes originated by AS27274 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
3
IPv6 prefixes
1
IPv4 addresses
139,264 (544 /24s)
RPKI valid
2 50%
RPKI invalid
0
RPKI not found
2
ROAs naming AS27274
2
With an IRR route object
4 100%

Announced prefixes

Each opens its own page: who announces it, the paths our collectors see, its ROAs and route objects.

IPv4 (3)
IPv6 (1)

RPKI valid   RPKI invalid   no ROA covers it

Who AS27274 is reached through

The AS just before AS27274 in the paths our looking glass collectors hold, for 4 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.

Sourceas-nameMaintained by
RADBCMUMAINT-AS27274

Route objects with origin AS27274: RADB 4 · ARIN 2

as-sets that list AS27274 (3)