asn.dev

Autonomous system

AS51816 ASTEC-AS

Unclassified ARIN

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

Summary

ACTUAL I.T. d.d.

Slovenia · AI-generated

business slovenia enterprise

ASTEC-AS is operated by ACTUAL I.T. d.d.

What it's used for

  • The address space is identified by the netname SI-ASTEC-NET and registrant Astec RIPE team; ACTUAL I.T. d.d., indicating a corporate IT infrastructure estate.
  • The AS announces a single IPv4 prefix, 91.220.107.0/24, comprising 256 addresses, with 0 IPv6 prefixes.
  • With only 1 observed neighbour, the network functions as an isolated or stubbed corporate site rather than a transit or access provider.

Notable

  • The registrant ACTUAL I.T. d.d. matches the AS holder, confirming consistent ownership of the address space.
  • The inventory consists of a single /24 block, representing a small, self-contained corporate network footprint.

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
AS43061Stelkom 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
SISlovenia1

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS51816
Registry name
ASTEC-AS
Registrant
AS5603-MNT
Abuse contact
abuse@actual-it.si
Registered
2010-11-10
Last changed
2026-01-26
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 1 valid, 0 with no ROA
ROAs
1 authorising AS51816
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
2 naming AS51816

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 1,771 prefixes, as published 2026-10-15. 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