asn.dev

Autonomous system

AS43953 MERCATOR-H

Unclassified ARIN

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

Summary

mStart plus d.o.o.

Croatia · AI-generated

business it croatia

MERCATOR-H is operated by mStart plus d.o.o.

What it's used for

  • The address space carries business IT infrastructure, with the netname MERCATOR-HR and registrant mStart plus d.o.o.
  • One IPv4 prefix (91.198.216.0/24) and one observed neighbour indicate a small, self-contained corporate network rather than a transit or access provider
  • Traffic consists of internal business systems and IT services for the company's operations in Zagreb

Notable

  • The registrant mStart plus d.o.o. matches the AS holder Mercator-H mStart plus d.o.o., confirming consistent ownership
  • The address inventory is minimal, consisting of a single /24 block, which aligns with a private corporate estate rather than a public-facing ISP

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
AS34540mStart plus d.o.o.60

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, 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
HRCroatia1

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS43953
Registry name
Mercator-H
Registrant
ISKON
Abuse contact
mreza@mstart.hr
Registered
2007-10-25
Last changed
2021-11-26
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 1 with no ROA
ROAs
0 authorising AS43953
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
1 naming AS43953

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 1,773 prefixes, as published 2026-10-13. 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