AS13250 — BACKBONE-

AS13250 announces 8 IPv4 prefixes covering 7,168 addresses and 1 IPv6 prefixes.

About this network

Eleven prefixes, every one of them beginning 212.117., announced as eleven separate routes.

What it's used for

• The network of a Swiss service provider. 7,168 addresses across eleven IPv4 prefixes, one IPv6 prefix 2a03:380::/32, and fifty-five observed BGP neighbours.

Notable

• Nine of the eleven blocks carry the single netname CH-BACKBONE1-990525.
• The other two are netname BACKBONE-CH, registered to Backbone CH alone rather than to the AG.
• Prefix sizes range from a /21 down to six separate /24s, all within 212.117..
• First observed in the routing archive in October 2000.

Interesting

• One netname across nine blocks of four different sizes means the label describes the customer of the allocation, not the allocation itself. The registry has been recording the same fact nine times, and the six-digit date inside it fixes that fact to 1999.
• Announcing eleven routes for what is one contiguous region of address space is a choice with a cost, since each one occupies a slot in every router carrying a full table. Networks do this when pieces of the range need different paths, or when nobody re-aggregated after the range grew.
• Two blocks are registered to a shortened form of the company name with no legal suffix, and those are exactly the two with the other netname. The pair travelled together through whatever event produced them.

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

Announced prefixes

• 212.117.192.0/24
• 212.117.195.0/24
• 212.117.196.0/22
• 212.117.200.0/21
• 212.117.209.0/24
• 212.117.210.0/24
• 212.117.212.0/22
• 212.117.216.0/21
• 2a03:380::/32

Upstream networks

• AS34309 Link11 GmbH
• AS1299 Arelion Sweden AB
• AS6939 Hurricane Electric LLC
• AS174 Cogent Communications, LLC
• AS3257 GTT Communications Inc.
• AS3491 PCCW Global (HK) Ltd.
• AS6730 Sunrise GmbH
• AS9002 RETN Limited
• AS24482 SG.GS
• AS34019 Hivane Association
• AS48362 Stadtwerke Feldkirch
• AS3303 Swisscom (Schweiz) AG
• AS25091 IP-Max SA

Adjacent networks

• AS34309 Link11 GmbH
• AS1299 Arelion Sweden AB
• AS6939 Hurricane Electric LLC
• AS174 Cogent Communications, LLC
• AS3257 GTT Communications Inc.
• AS3491 PCCW Global (HK) Ltd.
• AS6730 Sunrise GmbH
• AS9002 RETN Limited
• AS34019 Hivane Association
• AS24482 SG.GS
• AS48362 Stadtwerke Feldkirch
• AS25091 IP-Max SA
• AS3303 Swisscom (Schweiz) AG

Routing security

• RPKI: 3 valid, 0 invalid and 0 not-found announcements; 3 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 7 route objects.
• Listed in as-sets: AS-BACKBONE, AS-CABLECOM, AS-FINECOM-PEERS-SWISSIX, AS-GBLXEU, AS-GREEN-PEERS, AS-GTTCUST, AS-GTTCUST6, AS-LIECOMTEL-PEERS, AS-TELECOM-PEERS, AS-TIXZH, AS1299:AS-TWELVE99-EU-V4, AS1299:AS-TWELVE99-EU-V6, AS15576:AS-PEERING, AS15576:AS-PEERING:AS13250, AS20932:AS-PEERING, AS29097:AS-HOSTPOINT-SWISSIX-IPV6-PEERS, AS29097:AS-HOSTPOINT-SWISSIX-PEERS, AS3303:AS-SWCMPEERS, AS3491:AS-CUSTOMERS-EU, AS42476:AS-SWISSIX-CONNECTED, AS8508:AS-SASK-UPC-IN, AS9177:AS-TSMCHPEERS.

Internet exchanges

• SwissIX — Zurich, Switzerland