AS3303 ASPA Check - SWISSCOM (Schweiz)

Published

SWISSCOM Swisscom (Schweiz) AG🇨🇭 - ASPA check for AS3303: the upstream transit providers AS3303 has authorized in its RPKI Autonomous System Provider Authorization (ASPA) object, and the networks that list AS3303 as their provider. Routers that validate ASPA use these records to detect route leaks in BGP paths.

ASPA Status
Published
Upstream Providers
7
Downstream Customers
12

How to read this ASPA check

The 7 providers below are the only networks allowed to appear directly above AS3303 in an AS-path. If AS3303 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

AS3303 peering topology: 7 upstream providers and 12 downstream customersUpstreams: AS174, AS2914, AS3320, AS6939, AS7473, AS12956, AS33891. Downstreams: AS6837, AS8300, AS12637, AS21273, AS29222, AS34019, AS48885, AS49935 and more.AS3303 - SWISSCOM Swisscom (Schweiz) AGAS3303SWISSCOM Swisscom (Sc…AS174COGENT-174 - Cogent C…AS174 - COGENT-174 - Cogent Communications, LLCAS2914NTT-DATA-2914 - NTT A…AS2914 - NTT-DATA-2914 - NTT America, Inc.AS3320DTAG Deutsche Telekom…AS3320 - DTAG Deutsche Telekom AGAS6939HURRICANE - Hurricane…AS6939 - HURRICANE - Hurricane Electric LLCAS7473SINGTEL-AS-AP - Singa…AS7473 - SINGTEL-AS-AP - Singapore Telecommunications LtdAS12956TELXIUS TELEFONICA GL…AS12956 - TELXIUS TELEFONICA GLOBAL SOLUTIONS SLAS33891CORE-BACKBONE Core-Ba…AS33891 - CORE-BACKBONE Core-Backbone GmbHAS6837SWISSCOM-BBCS-AS Swis…AS6837 - SWISSCOM-BBCS-AS Swisscom (Schweiz) AGAS8300Test-AS-Main Swisscom…AS8300 - Test-AS-Main Swisscom (Schweiz) AGAS12637SEEWEB SEEWEB s.r.l.AS12637 - SEEWEB SEEWEB s.r.l.AS21273TEST-AS-Cust Swisscom…AS21273 - TEST-AS-Cust Swisscom (Schweiz) AGAS29222Infomaniak-AS Infoman…AS29222 - Infomaniak-AS Infomaniak Network SAAS34019HIVANE Hivane Associa…AS34019 - HIVANE Hivane AssociationAS48885NEOCARRIER Neocarrier…AS48885 - NEOCARRIER Neocarrier Communications SarlAS49935SmartEye SmartEye B.VAS49935 - SmartEye SmartEye B.VView all 12 downstreams →UPSTREAMSDOWNSTREAMS

Upstream Providers(7)

AS3303 authorizes these ASNs as upstream transit providers.

ASNName
AS174🇺🇸COGENT-174 - Cogent Communications, LLC
AS2914🇺🇸NTT-DATA-2914 - NTT America, Inc.
AS3320🇩🇪DTAG Deutsche Telekom AG
AS6939🇺🇸HURRICANE - Hurricane Electric LLC
AS7473🇸🇬SINGTEL-AS-AP - Singapore Telecommunications Ltd
AS12956🇪🇸TELXIUS TELEFONICA GLOBAL SOLUTIONS SL
AS33891🇩🇪CORE-BACKBONE Core-Backbone GmbH

Downstream Customers(12)

These ASNs list AS3303 as an authorized upstream provider.

ASNName
AS6837🇨🇭SWISSCOM-BBCS-AS Swisscom (Schweiz) AG
AS8300🇨🇭Test-AS-Main Swisscom (Schweiz) AG
AS12637🇮🇹SEEWEB SEEWEB s.r.l.
AS21273🇨🇭TEST-AS-Cust Swisscom (Schweiz) AG
AS29222🇨🇭Infomaniak-AS Infomaniak Network SA
AS34019🇫🇷HIVANE Hivane Association
AS48885🇨🇭NEOCARRIER Neocarrier Communications Sarl
AS49935🇧🇪SmartEye SmartEye B.V
AS49983🇨🇭MIRONET-AS MiroNet AG
AS204697🇨🇭Amalthea-Metis Sunrise GmbH
12 total
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ASPA object expires: 2026-10-27

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