ResearchRouting table, RPKI, IRR & looking glass

AS33538 Mimecast North America Inc

AS33538 (MIMECAST-CA) is registered to Mimecast North America Inc in US. It originates 4 prefixes in the global routing table.

2
IPv4 prefixes
2
IPv6 prefixes
1,024
IPv4 addresses
100%
RPKI valid

Who holds AS33538

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

AS number
AS33538
Handle
MIMECAST-CA
Organization
Mimecast North America Inc
Country
US
ASPA
None published

What AS33538 announces

Prefixes originated by AS33538 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
2
IPv6 prefixes
2
IPv4 addresses
1,024 (4 /24s)
RPKI valid
4 100%
RPKI invalid
0
RPKI not found
0
ROAs naming AS33538
9
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 (2)
IPv6 (2)

RPKI valid   RPKI invalid   no ROA covers it

Who AS33538 is reached through

The AS just before AS33538 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
RADBMimecast-NAMAINT-AS42427

Route objects with origin AS33538: RADB 9 · ARIN 4 · LEVEL3 1

as-sets that list AS33538 (7)