AS8300 — Test-AS-Main Swisscom (Schweiz) AG

AS8300 announces 6 IPv4 prefixes covering 1,536 addresses and 4 IPv6 prefixes.

About this network

Test-AS-Main is an auxiliary Autonomous System of Swisscom, the Swiss incumbent telecom operator. It is not a product or a customer-facing network: as the name says, it is a test AS, registered to Swisscom and maintained under the old CH-UNISOURCE-MNT object inherited from the Unisource era.

What it's used for

• Announcing a small set of Swisscom backbone infrastructure prefixes. Every address sampled inside them resolves into bb.ip-plus.net, Swisscom's IP-Plus backbone: router interface names of the form SITE-NNN-INTERFACE.bb.ip-plus.net covering link and loopback addressing rather than anything a customer uses.
• It sits behind Swisscom's main AS3303 and a second European upstream, and has no downstream customers of its own.

Notable

• Infrastructure only. There is no subscriber, hosting or business-access space on this AS. Swisscom's consumer and enterprise networks are numbered elsewhere, and inheriting the incumbent's kind onto this AS number would be wrong: it belongs in no ordinary category.
• Because the addresses are router interfaces, they carry backbone traffic but do not originate end-user activity. Geolocating or attributing behaviour to them as if they were subscriber addresses is a mistake.
• The 193.5.x and 194.209.x ranges it announces are old Swiss classful-era blocks, consistent with a low AS number in a national incumbent's estate.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 62.202.201.0/24
• 62.202.203.0/24
• 193.5.21.0/24
• 193.5.30.0/24
• 194.209.74.0/24
• 194.209.218.0/24
• 2001:918:1ab::/48
• 2001:918:f00::/40
• 2001:918:ffb7::/48
• 2a02:1211:e400::/38

Upstream networks

• AS3303 Swisscom (Schweiz) AG
• AS3320 Deutsche Telekom AG

Adjacent networks

• AS3303 Swisscom (Schweiz) AG
• AS3320 Deutsche Telekom AG

Routing security

• RPKI: 14 valid, 0 invalid and 0 not-found announcements; 18 ROAs.
• ASPA: 2 authorised providers.
• IRR: 71% of announcements registered; 15 route objects.
• Listed in as-sets: AS-ESTEL, AS-SWCMLAB, AS3303:AS-SWCMLOCAL, AS8300:AS-SWCMLAB.