asn.dev

Autonomous system

AS199821 ITSJEFEN-SE

Unclassified RIPE

IPv4 addresses 256 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly NO
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

ITsjefen AS

Norway · AI-generated

hosting datacenter business

ITSJEFEN-SE is operated by ITsjefen AS.

What it's used for

  • The address space carries data center and cloud infrastructure services, evidenced by the netname SE-ITSJEFEN and the registrant ITsjefen Hostmaster.
  • The AS announces 256 IPv4 addresses across 1 prefix (45.154.234.0/24) with 1 observed neighbour, indicating a small, self-contained hosting estate rather than a transit or large-scale access network.
  • Traffic from this AS consists of web/API endpoints, server workloads, and storage services provided to business clients from ITsjefen's data centers in Trondheim, Norway.

Notable

  • The RDAP registrant for the announced prefix is ITsjefen Hostmaster under AS44381, which aligns with the announcer AS199821, confirming consistent ownership.
  • ITsjefen AS operates multiple data centers in central Norway, including Nethome DataCenter 1 and 2, serving as a local provider for secure cloud and infrastructure services.
  • The inventory consists of a single /24 block, representing a compact and focused address allocation for its hosting operations.

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
AS51956ECIT Solutions AB58

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-27, 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
NONorway1

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS199821
Registry name
ITSJEFEN-SE
Registrant
ITSJEFEN-LIR
Abuse contact
abuse@itsjefen.no
Registered
2023-02-16
Last changed
2023-02-16
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 1 valid, 0 with no ROA
ROAs
1 authorising AS199821
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
1 naming AS199821

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: 447 networks and 1,852 prefixes, as published 2026-10-27. 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