AS203428 — IT4U-AS IT4U Sweden AB

AS203428 announces 2 IPv4 prefixes covering 1,536 addresses and 0 IPv6 prefixes.

About this network

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.

Announced prefixes

• 81.8.150.0/23
• 81.8.152.0/22

Upstream networks

• AS57630 84 Grams AB

Adjacent networks

• AS57630 84 Grams AB

Routing security

• RPKI: 6 valid, 0 invalid and 0 not-found announcements; 6 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 6 route objects.
• Listed in as-sets: AS-84GRAMS, AS-TELIANETSE.