AS12509 — LB-AS

AS12509 announces 2 IPv4 prefixes covering 512 addresses and 1 IPv6 prefixes.

About this network

Latvia's central bank on two /24s numbered one and two, with an IPv6 /48 and nothing else.

What it's used for

• Central bank connectivity. 512 addresses in two IPv4 /24s, one IPv6 /48, and three observed BGP neighbours.

Notable

• The two blocks are netnamed LATVIJAS-BANKA-NET1 and LATVIJAS-BANKA-NET2, both registered to LATVIJAS BANKA with the Bank of Latvia IT Department as contact.
• They are not adjacent: 194.153.79.0/24 and 91.194.176.0/24 come from entirely different parts of the address space.
• The IPv6 announcement is a single /48, 2001:67c:368::/48.
• Three neighbours for 512 addresses.

Interesting

• NET1 and NET2 is the shortest naming scheme a network can have and still tell two things apart. It works because the bank knew there would never be a NET7 — an institution with one building and one job does not need a taxonomy.
• Two /24s from unrelated blocks, years apart in the numbering, is what growth looks like for an organisation that grows very slowly. The first block came from the space available when it asked; the second from the space available the next time, with nothing adjacent left to extend into.
• Three neighbours rather than one is the interesting number here. A central bank is a piece of national infrastructure, and the way that shows up in routing is redundancy at the edge rather than size.

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

Announced prefixes

• 91.194.176.0/24
• 194.153.79.0/24
• 2001:67c:368::/48

Upstream networks

• AS12578 SIA Tet
• AS8194 VAS "Latvijas Valsts radio un televizijas centrs"
• AS1257 Tele2 Sverige AB

Adjacent networks

• AS12578 SIA Tet
• AS8194 VAS "Latvijas Valsts radio un televizijas centrs"
• AS1257 Tele2 Sverige AB