AS12439 — IMPROMEX

AS12439 announces 3 IPv4 prefixes covering 768 addresses and 0 IPv6 prefixes.

About this network

A Constanța provider announcing a shipyard's block alongside its own.

What it's used for

• Business connectivity. Three /24s with two observed BGP neighbours and no IPv6 announced.

Notable

• Two blocks, 193.41.245.0/24 and 193.41.247.0/24, share netname IMPROMEX-Constanta and are registered to the company.
• The third, 81.181.145.0/24, is netname DAMEN-SHIPYARDS-MANGALIA, registered through a local internet registry's abuse role rather than to Impromex.
• The two company blocks are not adjacent: 193.41.246.0/24 sits between them and is not announced here.
• Sampled reverse names read 127-245-41-193.impromex.ro — the address with its octets in reverse order.
• First seen in routing data in February 2001.

Interesting

• Constanța is Romania's port on the Black Sea and Mangalia is the shipbuilding town down the coast from it, so a provider in one is carrying the network of a yard in the other. The geography of this AS is about forty kilometres of coastline.
• Damen is a Dutch shipbuilding group that took over the Mangalia yard, which is how a Netherlands-owned name ends up in a Romanian netname on a Romanian provider's announcement.
• The reversed octets come from the reverse DNS zone's own ordering being used as the host name without flipping it back, a small automation shortcut that is common enough to be a genre.

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

Announced prefixes

• 81.181.145.0/24
• 193.41.245.0/24
• 193.41.247.0/24

Upstream networks

• AS47427 DREAMTEAM NETWORK SRL
• AS8953 Orange Romania S.A.

Adjacent networks

• AS47427 DREAMTEAM NETWORK SRL
• AS8953 Orange Romania S.A.