ResearchRouting table, RPKI, IRR & looking glass

AS21897 Virtua Health

AS21897 (VIRTUA-HEALTH) is registered to Virtua Health in US. It originates 1 prefix in the global routing table.

1
IPv4 prefixes
0
IPv6 prefixes
65,536
IPv4 addresses
0%
RPKI valid

Who holds AS21897

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

AS number
AS21897
Handle
VIRTUA-HEALTH
Organization
Virtua Health
Country
US
ASPA
None published

What AS21897 announces

Prefixes originated by AS21897 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
1
IPv6 prefixes
0
IPv4 addresses
65,536 (256 /24s)
RPKI valid
0 0%
RPKI invalid
0
RPKI not found
1
ROAs naming AS21897
0
With an IRR route object
1 100%

Announced prefixes

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

IPv4 (1)

RPKI valid   RPKI invalid   no ROA covers it

Who AS21897 is reached through

The AS just before AS21897 in the paths our looking glass collectors hold, for 1 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
RADBVIRTUA-HEALTHMAINT-AS17378

Route objects with origin AS21897: RADB 1

as-sets that list AS21897 (5)