AS39560 — KT-NET

AS39560 announces 12 IPv4 prefixes covering 21,504 addresses and 1 IPv6 prefixes.

About this network

The AS handle KT-NET is held by KT-NET Communications GmbH.

What it's used for

• The address space carries subscriber and hosting traffic, evidenced by reverse DNS entries such as 85-233-119-254.kt-net.net and netnames like AT-KTNET-20050421.
• The AS announces 21,504 IPv4 addresses across 12 prefixes and 1 IPv6 prefix, while maintaining 93 observed neighbours, a ratio consistent with a regional access and hosting provider.
• Traffic from this AS consists of residential broadband subscribers and business clients utilizing regional data center infrastructure for server hosting and secure connectivity.

Notable

• All registrants for the announced prefixes are listed as KT-NET Communications GmbH, agreeing with the AS holder.
• The address inventory is composed of a mix of legacy blocks (e.g., 85.233.96.0/19) and numerous smaller /22 and /23 allocations acquired between 2015 and 2019.

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

Announced prefixes

• 2.56.208.0/22
• 45.10.144.0/22
• 45.95.124.0/22
• 45.144.84.0/22
• 45.149.32.0/22
• 46.20.16.0/20
• 85.209.20.0/22
• 85.233.96.0/19
• 185.90.92.0/22
• 185.190.220.0/22
• 193.254.204.0/23
• 193.254.218.0/23
• 2a00:dc0::/32

Upstream networks

• AS9002 RETN Limited
• AS1299 Arelion Sweden AB
• AS6204 TMRC GROUP SRL
• AS2914 NTT America, Inc.
• AS6939 Hurricane Electric LLC
• AS34549 meerfarbig GmbH & Co. KG
• AS24482 SG.GS
• AS48362 Stadtwerke Feldkirch
• AS212024 Marc Schmitt
• AS20485 Joint Stock Company TransTeleCom
• AS37100 SEACOM Limited
• AS3303 Swisscom (Schweiz) AG
• AS37721 Virtual Technologies & Solutions
• AS34019 Hivane Association
• AS29632 Netassist International EOOD
• AS213241 TECHIT.BE SRL

Adjacent networks

• AS9002 RETN Limited
• AS1299 Arelion Sweden AB
• AS6204 TMRC GROUP SRL
• AS2914 NTT America, Inc.
• AS6939 Hurricane Electric LLC
• AS34549 meerfarbig GmbH & Co. KG
• AS212024 Marc Schmitt
• AS24482 SG.GS
• AS48362 Stadtwerke Feldkirch
• AS37721 Virtual Technologies & Solutions
• AS3303 Swisscom (Schweiz) AG
• AS37100 SEACOM Limited
• AS20485 Joint Stock Company TransTeleCom
• AS34019 Hivane Association
• AS29632 Netassist International EOOD
• AS213241 TECHIT.BE SRL

Routing security

• RPKI: 0 valid, 0 invalid and 13 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 13 route objects.
• Listed in as-sets: AS-39912-V4, AS-39912-V6, AS-HURRICANEV6, AS-KT-NET, AS-LINZNET-GER, AS-MANDA-DECIX-PEERS-V4, AS-MANDA-DECIX-PEERS-V6, AS-RETN-ACTUAL-V4, AS-RETN-ACTUAL-V6, AS-TRANSROUTE-SPEC, AS-VIX-MEMBERS, AS-ZETNET, AS203462:AS-NVC-DECIX_FRA_RS, AS2914:AS-EUROPE, AS2914:AS-EUROPE-V6, AS6695:AS-DECIX-FRA-CONNECTED, AS6695:AS-DECIX-FRA-RS, AS6695:AS-DECIX-FRA-RS-V6.

Internet exchanges

• DE-CIX Frankfurt — Frankfurt, Germany
• Vienna Internet Exchange — Vienna, Austria