AS3356 ASPA Check - Level 3 Parent

LEVEL3 - Level 3 Parent, LLC🇺🇸 - ASPA check for AS3356: the upstream transit providers AS3356 has authorized in its RPKI Autonomous System Provider Authorization (ASPA) object, and the networks that list AS3356 as their provider. Routers that validate ASPA use these records to detect route leaks in BGP paths.

AS3356 has not published its own ASPA object, but 216 ASNs list it as an authorized upstream provider.

Listed as Upstream By
216 ASNs
Upstream Providers
-
Downstream Customers
216

Peering Topology

AS3356 peering topology: 0 upstream providers and 216 downstream customersNo upstreams. Downstreams: AS80, AS293, AS559, AS680, AS897, AS934, AS955, AS978 and more.AS3356 - LEVEL3 - Level 3 Parent, LLCAS3356LEVEL3 - Level 3 Pare…AS80GE-CRD - General Elec…AS80 - GE-CRD - General Electric CompanyAS293ESNET - ESnetAS293 - ESNET - ESnetAS559Switch SWITCHAS559 - Switch SWITCHAS680DFN Verein zur Foerde…AS680 - DFN Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.AS897TURTLE-ROCK-STUDIOS -…AS897 - TURTLE-ROCK-STUDIOS - Turtle Rock Studios, Inc.AS934BSTI - Big Sky Tech …AS934 - BSTI - Big Sky Tech Internet, Inc.AS955LSHIY - LSHIY LLCAS955 - LSHIY - LSHIY LLCAS978SHAMROCK-TRADING-CORP…AS978 - SHAMROCK-TRADING-CORPORATION - Shamrock Trading CorporationView all 216 downstreams →UPSTREAMSDOWNSTREAMS

Downstream Customers(216)

These ASNs list AS3356 as an authorized upstream provider.

ASNName
AS80🇺🇸GE-CRD - General Electric Company
AS293🇺🇸ESNET - ESnet
AS559🇨🇭Switch SWITCH
AS680🇩🇪DFN Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.
AS897🇺🇸TURTLE-ROCK-STUDIOS - Turtle Rock Studios, Inc.
AS934🇺🇸BSTI - Big Sky Tech & Internet, Inc.
AS955🇺🇸LSHIY - LSHIY LLC
AS978🇺🇸SHAMROCK-TRADING-CORPORATION - Shamrock Trading Corporation
AS1436🇺🇸HACKENSACK-MERIDIAN-HEALTH - Meridian Health System
AS3170🇬🇧VELOXSERV VeloxServ Communications Ltd
216 total
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About ASPA - what it is and why AS3356 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.

AS3356 (LEVEL3 - Level 3 Parent, LLC) 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

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