AS15669 — BIX-BG Bulgarian Internet eXchange BIX.BG ltd.

AS15669 announces 1 IPv4 prefixes covering 512 addresses and 1 IPv6 prefixes.

About this network

An internet exchange's own number, carrying five hundred and twelve addresses and nine neighbours.

What it's used for

• An internet exchange operator's network. One IPv4 /23 and one IPv6 prefix announced from Bulgaria, five hundred and twelve addresses, across nine observed BGP neighbours.

Notable

• The AS handle spells out the exchange's full name and puts a capital letter in the middle of the word "exchange", then finishes with the legal form in lower case.
• The holder name contains a dot, which is part of the brand rather than a separator.
• The single announced IPv4 block is 91.237.102.0/23, registered under a netname that is the abbreviated brand and nothing more.
• The block lists the operator and an abuse role.
• Three addresses were queried for reverse DNS and none returned a name.
• The routing archive's earliest observation is the first day it holds data, so this number predates the record.

Interesting

• An exchange moves far more traffic than this number ever sees. The switching fabric that members connect to needs no autonomous system at all; what the number carries is the route servers, measurement hosts and management addresses that sit beside it.
• Nine neighbours on five hundred and twelve addresses is the shape that gives it away. Members peer with the route servers, so the neighbour count tracks the exchange's business while the address count stays fixed.
• This is the second exchange in this stretch of numbers. Both were registered when a country's first exchange was still a single organisation with a single small block.

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

Announced prefixes

• 91.237.102.0/23
• 2a03:4ba0::/48

Upstream networks

• AS47697 BIX.BG Ltd.
• AS6939 Hurricane Electric LLC
• AS8218 Zayo Infrastructure France SA
• AS8280 SYNAPSECOM S.A. Provider of Telecommunications and Internet Services

Adjacent networks

• AS47697 BIX.BG Ltd.
• AS6939 Hurricane Electric LLC
• AS8280 SYNAPSECOM S.A. Provider of Telecommunications and Internet Services
• AS8218 Zayo Infrastructure France SA

Internet exchanges

• Bulgarian Internet eXchange — Sofia, Bulgaria