AS44381 — ITSJEFEN-AS ITsjefen AS

AS44381 announces 8 IPv4 prefixes covering 14,848 addresses and 1 IPv6 prefixes.

About this network

ITSJEFEN-AS is operated by ITsjefen AS.

What it's used for

• The address space carries data center and hosting infrastructure, evidenced by reverse DNS entries such as vdc-ndc.trd.no.as44381.net and er4.ndc4.trd.as44381.net, which reference virtual data centers and edge routers in Trondheim.
• The AS announces 14,848 IPv4 addresses across 8 prefixes and 1 IPv6 prefix, while maintaining 12 observed routing neighbours; this ratio indicates a regional network service provider (NSP) rather than a pure transit carrier.
• Traffic from this AS consists of dedicated server solutions, colocation services, and cloud infrastructure hosted in ITsjefen's data centers in Trondheim, serving clients such as Sticos and F24 Nordics.

Notable

• Registrants for the majority of prefixes align with the announcer, listing ITsjefen AS and ITsjefen Hostmaster, though some blocks are registered to 99X INCREO AS and Sticos AS.
• ITsjefen AS became part of ECIT AS in June 2023.
• The inventory includes a /24 block registered to Amateur Radio Digital Communications with the netname AMPRNET, which is distinct from the primary corporate holdings.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 5.145.154.0/23
• 5.145.156.0/22
• 44.31.78.0/24
• 45.154.232.0/23
• 92.62.32.0/20
• 95.141.64.0/20
• 193.160.138.0/24
• 217.144.64.0/20
• 2a02:2c8::/32

Upstream networks

• AS2119 Telenor Norge AS
• AS2116 GLOBALCONNECT AS
• AS25400 Telia Norge AS

Downstream networks

• AS207851 Fara AS
• AS199999 AKVA group ASA
• AS59438 99X INCREO AS
• AS50213 Underworld
• AS214761 Foreach AS
• AS58005 F24 NORDICS AS
• AS5485 SMARTHELP AS
• AS3573 Accenture LLP

Adjacent networks

• AS2119 Telenor Norge AS
• AS2116 GLOBALCONNECT AS
• AS207851 Fara AS
• AS199999 AKVA group ASA
• AS59438 99X INCREO AS
• AS50213 Underworld
• AS5485 SMARTHELP AS
• AS214761 Foreach AS
• AS58005 F24 NORDICS AS
• AS3573 Accenture LLP
• AS25400 Telia Norge AS

Routing security

• RPKI: 8 valid, 0 invalid and 1 not-found announcements; 10 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 12 route objects.
• Listed in as-sets: AS-ITSJEFEN, AS-TELIANORWAY-CUST.

Internet exchanges

• Trondheim Internet Exchange — Trondheim, Norway