ResearchRouting table, RPKI, IRR & looking glass

AS7539 National Center for High-performance Computing

AS7539 (TWAREN-TW) is registered to National Center for High-performance Computing in TW. It originates 15 prefixes in the global routing table.

14
IPv4 prefixes
1
IPv6 prefixes
86,528
IPv4 addresses
93%
RPKI valid

Who holds AS7539

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

AS number
AS7539
Handle
TWAREN-TW
Organization
National Center for High-performance Computing
Country
TW
ASPA
None published

What AS7539 announces

Prefixes originated by AS7539 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
14
IPv6 prefixes
1
IPv4 addresses
86,528 (338 /24s)
RPKI valid
14 93%
RPKI invalid
1
RPKI not found
0
ROAs naming AS7539
11
With an IRR route object
10 66%

Announced prefixes

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

Who AS7539 is reached through

The AS just before AS7539 in the paths our looking glass collectors hold, for 15 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.