AS210728 — CYSO-AS-DE Cyso Group B.V.

AS210728 announces 3 IPv4 prefixes covering 768 addresses and 1 IPv6 prefixes.

About this network

CYSO-AS-DE is operated by Cyso Group B.V.

What it's used for

• The address space carries hosting and cloud infrastructure, evidenced by netnames NL-CYSOGROUP4-20210811, NL-CYSOGROUP-20210713, and NL-CYSOGROUP2-20210726 registered to Cyso Hosting B.V.
• The AS announces 768 IPv4 addresses across 3 prefixes and 1 IPv6 prefix, while maintaining 114 observed neighbours; this ratio of limited address inventory against a high number of peering partners indicates a transit or upstream role for its hosting clients.
• Traffic from this AS consists of web and API endpoints for cloud and hosting services, as Cyso Group specializes in these IT services.

Notable

• Registrants for all announced prefixes are consistent with the AS holder, listing Cyso Hosting B.V. and Cyso Group B.V.
• The address inventory is composed of three distinct /24 IPv4 blocks and a single /32 IPv6 prefix, all located in the Netherlands.

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

Announced prefixes

• 77.246.243.0/24
• 194.26.103.0/24
• 213.173.39.0/24
• 2a11:2440::/32

Upstream networks

• AS3356 Level 3 Parent, LLC
• AS6939 Hurricane Electric LLC
• AS25151 Cyso Group B.V.
• AS34549 meerfarbig GmbH & Co. KG
• AS212024 Marc Schmitt
• AS34019 Hivane Association
• AS24482 SG.GS
• AS213241 TECHIT.BE SRL
• AS37721 Virtual Technologies & Solutions
• AS1836 green.ch AG
• AS12779 IT.Gate S.p.A.
• AS20485 Joint Stock Company TransTeleCom
• AS37100 SEACOM Limited
• AS8551 Bezeq International Ltd.
• AS6797 GlobalConnect AB
• AS33891 Core-Backbone GmbH
• AS12859 BIT BV
• AS56662 Marcin Gondek
• AS17639 Converge ICT Solutions Inc.
• AS58057 Securebit AG
• AS48362 Stadtwerke Feldkirch
• AS29632 Netassist International EOOD

Downstream networks

• AS44694 Cyso Group B.V.

Adjacent networks

• AS3356 Level 3 Parent, LLC
• AS44694 Cyso Group B.V.
• AS6939 Hurricane Electric LLC
• AS25151 Cyso Group B.V.
• AS34549 meerfarbig GmbH & Co. KG
• AS37721 Virtual Technologies & Solutions
• AS212024 Marc Schmitt
• AS213241 TECHIT.BE SRL
• AS24482 SG.GS
• AS1836 green.ch AG
• AS34019 Hivane Association
• AS33891 Core-Backbone GmbH
• AS8551 Bezeq International Ltd.
• AS37100 SEACOM Limited
• AS6797 GlobalConnect AB
• AS20485 Joint Stock Company TransTeleCom
• AS12779 IT.Gate S.p.A.
• AS12859 BIT BV
• AS48362 Stadtwerke Feldkirch
• AS17639 Converge ICT Solutions Inc.
• AS58057 Securebit AG
• AS56662 Marcin Gondek
• AS29632 Netassist International EOOD

Routing security

• RPKI: 4 valid, 0 invalid and 0 not-found announcements; 4 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 4 route objects.
• Listed in as-sets: AS-CYSO, AS-CYSO-DE, AS43252:AS-DECIX-HAM-CONNECTED, AS43252:AS-DECIX-HAM-RS, AS43252:AS-DECIX-HAM-RS-V6, AS47228:AS-DECIX-MUC-CONNECTED, AS47228:AS-DECIX-MUC-RS, AS47228:AS-DECIX-MUC-RS-V6, AS56890:AS-DECIX-DUS-CONNECTED, AS56890:AS-DECIX-DUS-RS, AS56890:AS-DECIX-DUS-RS-V6, AS6695:AS-DECIX-FRA-CONNECTED, AS6695:AS-DECIX-FRA-RS, AS6695:AS-DECIX-FRA-RS-V6.

Internet exchanges

• DE-CIX Frankfurt — Frankfurt, Germany
• DE-CIX Dusseldorf — Düsseldorf, Germany
• DE-CIX Munich — Munich, Germany
• DE-CIX Hamburg — Hamburg, Germany