ResearchRouting table, RPKI, IRR & looking glass

AS109 CISCO SYSTEMS, INC.

AS109 (CISCOSYSTEMS) is registered to CISCO SYSTEMS, INC. in US. It originates 142 prefixes in the global routing table.

96
IPv4 prefixes
46
IPv6 prefixes
1,149,696
IPv4 addresses
97%
RPKI valid

Who holds AS109

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

AS number
AS109
Handle
CISCOSYSTEMS
Organization
CISCO SYSTEMS, INC.
Country
US
ASPA
None published

What AS109 announces

Prefixes originated by AS109 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
96
IPv6 prefixes
46
IPv4 addresses
1,149,696 (4,491 /24s)
RPKI valid
138 97%
RPKI invalid
0
RPKI not found
4
ROAs naming AS109
22
With an IRR route object
132 92%

Announced prefixes

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

IPv4 (96)
IPv6 (46)

RPKI valid   RPKI invalid   no ROA covers it

Who AS109 is reached through

The AS just before AS109 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.