AS15517 — NETSTREAM-

Network type: residential

AS15517 announces 12 IPv4 prefixes covering 21,504 addresses and 1 IPv6 prefixes.

About this network

The reverse names contain the letters for the record type, inside the record itself.

What it's used for

• A fibre and business connectivity provider. Twelve IPv4 prefixes and one IPv6 /32 announced from Switzerland, twenty-one thousand addresses, across forty-six observed BGP neighbours.

Notable

• Four answering addresses take the form of a gateway abbreviation, then the three letters naming the reverse record type, then the address in dashes, then a word for customer, then a country code, then the domain.
• The fifth answers under a different company's domain with a label for a subscriber line technology.
• Netnames disagree with each other: some carry the holding company and an allocation date, some name a fibre-to-the-home product, one names another brand, and one ends in a mixed-case customer number.
• The AS handle ends in a bare hyphen where a longer string was cut off.
• Eighteen addresses were queried for reverse DNS and five returned a name.

Interesting

• Putting the record type into the name is redundant in the way that filing a document in a folder called folder is redundant. It survives because a template generated it and nothing objected.
• Six levels of label in one name is a lot, but each one carries information: role, address, customer status, country. The zone is organised by what the operator needs to look up.
• Forty-six neighbours for twenty-one thousand addresses is heavy interconnection for a provider this size, which is what selling business connectivity requires.

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

Announced prefixes

• 62.65.128.0/21
• 62.65.136.0/24
• 62.65.138.0/23
• 62.65.140.0/24
• 62.65.152.0/24
• 62.65.159.0/24
• 94.78.0.0/23
• 94.78.4.0/22
• 94.78.8.0/21
• 94.78.16.0/20
• 94.78.32.0/19
• 213.133.240.0/21
• 2a01:330::/32

Upstream networks

• AS6939 Hurricane Electric LLC
• AS3303 Swisscom (Schweiz) AG
• AS24482 SG.GS
• AS48362 Stadtwerke Feldkirch
• AS1836 green.ch AG
• AS6830 Liberty Global Europe Holding B.V.
• AS33891 Core-Backbone GmbH
• AS9002 RETN Limited
• AS13030 Init7 (Switzerland) Ltd.

Adjacent networks

• AS6939 Hurricane Electric LLC
• AS3303 Swisscom (Schweiz) AG
• AS1836 green.ch AG
• AS48362 Stadtwerke Feldkirch
• AS24482 SG.GS
• AS6830 Liberty Global Europe Holding B.V.
• AS33891 Core-Backbone GmbH
• AS9002 RETN Limited
• AS13030 Init7 (Switzerland) Ltd.

Internet exchanges

• SwissIX — Zurich, Switzerland