asn.dev

Autonomous system

AS44363 ASESN01

Unclassified RIPE

IPv4 addresses 2.05K 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly AT
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Energie Steiermark Breitband

Austria · AI-generated

broadband residential austria energy

ASESN01 is operated by Energie Steiermark Breitband GmbH.

What it's used for

  • The address space carries residential broadband traffic, evidenced by reverse DNS entries such as lan-242.net.esn.at, brc-243.net.esn.at, and 193-186-245-254.greenstream.at.
  • The AS announces 2048 IPv4 addresses within a single /21 prefix (193.186.240.0/21) and has one observed neighbour, indicating a local access network rather than a transit provider.
  • As a subsidiary of the regional energy utility Energie Steiermark AG, the network serves subscriber eyeballs for internet access in the Styria region of Austria.

Notable

  • The RDAP registrant for the announced prefix is listed as unknown with the netname RIPE-NCC-MANAGED-ADDRESS-BLOCK, which does not explicitly match the AS holder name in the registry data.
  • The address inventory consists of a single contiguous /21 block, typical for a regional broadband deployment.

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
AS60587XINON GmbH130

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-22, 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 · 2.05K addresses IPv6 0 prefixes

CountryNamePrefixes
ATAustria1

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS44363
Registry name
asesn01
Registrant
ESN-MNT
Abuse contact
hostmaster@esn.at
Registered
2020-08-28
Last changed
2025-11-18
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 2 with no ROA
ROAs
0 authorising AS44363
ASPA
no ASPA record
IRR
100% registered · 2 of 2 announcements
Route objects
2 naming AS44363

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 2026-10-23. 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