ResearchRouting table, RPKI, IRR & looking glass

AS4043 Montana Internet Corporation

AS4043 (MIC-ASN) is registered to Montana Internet Corporation in US. It originates 5 prefixes in the global routing table.

4
IPv4 prefixes
1
IPv6 prefixes
25,344
IPv4 addresses
0%
RPKI valid

Who holds AS4043

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

AS number
AS4043
Handle
MIC-ASN
Organization
Montana Internet Corporation
Country
US
ASPA
None published

What AS4043 announces

Prefixes originated by AS4043 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
4
IPv6 prefixes
1
IPv4 addresses
25,344 (99 /24s)
RPKI valid
0 0%
RPKI invalid
0
RPKI not found
5
ROAs naming AS4043
0
With an IRR route object
3 60%

Announced prefixes

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

IPv4 (4)
IPv6 (1)

RPKI valid   RPKI invalid   no ROA covers it

Who AS4043 is reached through

The AS just before AS4043 in the paths our looking glass collectors hold, for 5 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
ALTDBMIC-ASNMAINT-AS4043
ARINMIC-ASNMNT-MIC-Z

Route objects with origin AS4043: ALTDB 5 · ARIN 2

as-sets that list AS4043 (4)