AS39122 ASPA Check - BLACKNIGHT Internet Solutions Limited

BLACKNIGHT-AS Blacknight Internet Solutions Limited🇮🇪 - ASPA check for AS39122: the upstream transit providers AS39122 has authorized in its RPKI Autonomous System Provider Authorization (ASPA) object, and the networks that list AS39122 as their provider. Routers that validate ASPA use these records to detect route leaks in BGP paths.

AS39122 has not published its own ASPA object, but 3 ASNs list it as an authorized upstream provider.

Listed as Upstream By
3 ASNs
Upstream Providers
-
Downstream Customers
3

Peering Topology

AS39122 peering topology: 0 upstream providers and 3 downstream customersNo upstreams. Downstreams: AS41073, AS201000, AS210045.AS39122 - BLACKNIGHT-AS Blacknight Internet Solutions LimitedAS39122BLACKNIGHT-AS Blackni…AS41073RTE Raidio Teilifis E…AS41073 - RTE Raidio Teilifis EireannAS201000WHIZZY-FTTX Js Whizzy…AS201000 - WHIZZY-FTTX Js Whizzy Internet LimitedAS210045BC-AS Blackrock Clini…AS210045 - BC-AS Blackrock Clinic Unlimited CompanyUPSTREAMSDOWNSTREAMS

Downstream Customers(3)

These ASNs list AS39122 as an authorized upstream provider.

ASNName
AS41073🇮🇪RTE Raidio Teilifis Eireann
AS201000🇮🇪WHIZZY-FTTX Js Whizzy Internet Limited
AS210045🇮🇪BC-AS Blackrock Clinic Unlimited Company
About ASPA - what it is and why AS39122 should publish one

ASPA (Autonomous System Provider Authorization) is a cryptographically signed RPKI object specified in the IETF draft-ietf-sidrops-aspa-profile that lets an AS declare which upstream networks are its authorized transit providers. Together with route origin validation (ROV), ASPA enables BGP route leak detection: routers can reject AS-paths in which a network appears as a provider without being authorized. Route leaks are a frequent cause of large routing incidents, and ROV alone cannot detect them because the origin of a leaked route is correct.

AS39122 (BLACKNIGHT-AS Blacknight Internet Solutions Limited) has not published an ASPA object. Hops through it are therefore "unknown" to ASPA validation - not invalid, but not protected either. An ASPA object lists every transit provider of the network (or AS0 if it has none) and is created in the RIR's hosted RPKI where ASPA is supported, or in a delegated RPKI setup. For most networks the record is a short list of their upstream ASNs.

Create an ASPA object: RIPE Portal · ARIN RPKI · APNIC MyAPNIC · ipctl.io RPKI & ROA tools

Related Tools and Guides

← Back to AS39122