Autonomous system
AS12439 IMPROMEX
Unclassified RIPE
Summary
Impromex
isp business
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,
193.41.245.0/24and193.41.247.0/24, share netnameIMPROMEX-Constantaand are registered to the company. - The third,
81.181.145.0/24, is netnameDAMEN-SHIPYARDS-MANGALIA, registered through a local internet registry's abuse role rather than to Impromex. - The two company blocks are not adjacent:
193.41.246.0/24sits 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. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-17, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 3 prefixes · 768 addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| RO | Romania | 3 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS12439- Registry name
- IMPROMEX
- Registrant
- AS12439-MNT
- Abuse contact
- ionel.stancu@impromex.ro
- Registered
- 1970-01-01
- Last changed
- 2025-01-02
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 67% valid · 2 valid, 1 with no ROA
- ROAs
- 2 authorising AS12439
- ASPA
- no ASPA record
- IRR
- 100% registered · 3 of 3 announcements
- Route objects
- 3 naming AS12439
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,783 prefixes, as published 2026-10-17. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere