asn.dev

Autonomous system

AS43512 MERCOR-AS

Unclassified RIPE

IPv4 addresses 256 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly PL
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Mercor S.A.

Poland · AI-generated

business construction fire-protection corporate

The AS handle MERCOR-AS is held by Mercor S.A., a Polish construction and fire protection systems company.

What it's used for

  • The address space carries corporate infrastructure, evidenced by the netname MERCOR and registrant Mercor S.A. in the RDAP data.
  • The inventory consists of a single IPv4 prefix, 193.46.237.0/24 (256 addresses), with 0 IPv6 prefixes and 1 observed neighbour, indicating a small, self-contained internal network rather than a transit or access provider.
  • Traffic from this AS represents office workers and corporate endpoints for a company specializing in fire protection system design, production, and installation, with operations across Poland, the UK, Romania, Slovakia, Czech Republic, and Hungary.

Notable

  • The registrant Mercor S.A. matches the AS holder, confirming consistent ownership of the address space.
  • The address inventory is minimal, comprising a single /24 block, which aligns with the needs of a mid-sized corporate entity rather than a large-scale network operator.

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

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS8308PANSTWOWY INSTYTUT BADAWCZY59

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-21, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 1 prefixes · 256 addresses IPv6 0 prefixes

CountryNamePrefixes
PLPoland1

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS43512
Registry name
MERCOR-AS
Registrant
NASK-MNT
Abuse contact
abuse@nask.pl
Registered
2007-08-14
Last changed
2018-09-04
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 1 with no ROA
ROAs
0 authorising AS43512
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
1 naming AS43512

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 1,779 prefixes, as published 2026-10-22. 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

Cross-check