AS28917 ASPA Check - Fiord Networks, UAB

Published

Fiord-AS Fiord Networks, UAB🇱🇹 - ASPA check for AS28917: the upstream transit providers AS28917 has authorized in its RPKI Autonomous System Provider Authorization (ASPA) object, and the networks that list AS28917 as their provider. Routers that validate ASPA use these records to detect route leaks in BGP paths.

ASPA Status

Published

Upstream Providers

Downstream Customers

How to read this ASPA check

The 2 providers below are the only networks allowed to appear directly above AS28917 in an AS-path. If AS28917 uses a transit provider that is missing from this list, routers that enforce ASPA treat its routes through that provider as invalid, so the list should include every current and backup transit provider. Peers do not belong in it.

Step-by-step ASPA check guide - including how to validate an AS-path hop by hop.

Peering Topology

Upstream Providers(2)

AS28917 authorizes these ASNs as upstream transit providers.

ASN	Name
AS3257	🇺🇸GTT-BACKBONE GTT Communications Inc.
AS6762	🇮🇹SEABONE-NET TELECOM ITALIA SPARKLE S.p.A.

Downstream Customers(6)

These ASNs list AS28917 as an authorized upstream provider.

ASN	Name
AS31368	🇨🇿PROMOCOM-NET ASTELNET s.r.o.
AS40964	🇨🇿ASTELNET ASTELNET s.r.o.
AS50045	🇷🇺MONNET-AS PJSC Montazh
AS51369	🇷🇺FIORD-RU-AS LLC "TRC FIORD"
AS198310	🇷🇺ooo-molniya OOO Molniya
AS216248	🇷🇺INFERIT-AS LLC INFERIT

ASPA object expires: 2026-10-27

Related Tools and Guides

How to run an ASPA check - read and verify an ASPA record step by step
ASPA explained - how provider authorization stops route leaks
ASPA Check tool - check the ASPA record of any other ASN
RPKI & ROA Lookup - validate prefixes and check ASPA records for any ASN
Global ASPA Adoption Statistics - transit-free ASNs, top upstream providers, adoption trends
AS28917 Overview - prefixes, BGP routes, peers, and RPKI status

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