asn.dev

Autonomous system

AS203428 IT4U-AS

Unclassified RIPE

IPv4 addresses 1.54K 2 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly SE
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

IT4U Sweden AB

Sweden · AI-generated

hosting business sweden

The AS handle IT4U-AS is held by IT4U Sweden AB.

What it's used for

  • The address space carries business and hosting traffic, evidenced by reverse DNS entries such as 81-8-151-126.com.it4u.net and 81-8-154-254.pp.it4u.net.
  • The network announces 1536 IPv4 addresses across 2 prefixes with only 1 observed neighbour, indicating a small-scale access or hosting network rather than a transit provider.
  • Traffic from this AS consists of web and API endpoints for IT4U's hosting services, as indicated by the .com and .pp subdomains in the reverse DNS records.

Notable

  • The registrants for both announced prefixes are listed as AC-Net Network; AC-Net AB, which differs from the AS holder IT4U Sweden AB, suggesting the address space was originally allocated to AC-Net before being announced by IT4U.
  • The inventory consists of two contiguous IPv4 prefixes (81.8.152.0/22 and 81.8.150.0/23) with no IPv6 prefixes announced.

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
AS5763084 Grams AB366

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-28, 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 2 prefixes · 1.54K addresses IPv6 0 prefixes

CountryNamePrefixes
SESweden2

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS203428
Registry name
IT4U-AS
Registrant
mnt-se-84grams-1
Abuse contact
support@it4u.se
Registered
2023-05-24
Last changed
2023-05-24
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 6 valid, 0 with no ROA
ROAs
6 authorising AS203428
ASPA
no ASPA record
IRR
100% registered · 6 of 6 announcements
Route objects
6 naming AS203428

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: 448 networks and 1,851 prefixes, as published 2026-10-29. 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