AS50837 — CLOUDSIGMA-AS CLOUDSIGMA AG

Network type: hosting

AS50837 announces 21 IPv4 prefixes covering 14,336 addresses and 4 IPv6 prefixes.

About this network

CLOUDSIGMA-AS is operated by CloudSigma AG.

What it's used for

• The address space carries cloud infrastructure, evidenced by reverse DNS entries such as host-0-250-171-31.cloudsigma.net and netnames like CH-CLOUDSIGMA-20110404 and CLOUDSIGMA.
• The AS announces 14,336 IPv4 addresses across 22 prefixes and 4 IPv6 prefixes, while maintaining 110 observed neighbours; this high neighbour count relative to the address inventory indicates a transit or peering-heavy role typical of a cloud provider connecting to multiple upstreams and peers.
• Traffic from this AS consists of cloud workloads, API endpoints, and virtual machine instances hosted for service providers, telcos, and datacenter operators who use CloudSigma’s platform to deliver branded IaaS and AI services.

Notable

• Registrants for the majority of prefixes align with the announcer, listing CloudSigma RIPE DB maintainer and CLOUDSIGMA AG, though some prefixes show historical registrants like Al-Kam Telecommunication and ServeCentric Ltd..
• The address inventory is fragmented across multiple /22 and /23 blocks, including ranges originally allocated to other entities, suggesting a history of acquisitions or leased space integration.

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

Announced prefixes

• 31.171.240.0/23
• 31.171.242.0/24
• 31.171.244.0/22
• 31.171.248.0/21
• 87.120.132.0/24
• 91.92.71.0/24
• 91.92.176.0/23
• 94.156.66.0/24
• 94.156.200.0/22
• 94.156.227.0/24
• 104.36.16.0/22
• 104.244.32.0/24
• 109.224.243.0/24
• 162.213.36.0/22
• 178.22.64.0/21
• 185.12.4.0/23
• 185.12.6.0/24
• 185.113.222.0/24
• 185.230.208.0/22
• 212.87.206.0/24
• 212.147.208.0/22
• 2a01:9980:2::/48
• 2a01:9980:a::/47
• 2a01:9980:c::/47
• 2a01:9980:10::/47

Upstream networks

• AS6461 Zayo Bandwidth
• AS174 Cogent Communications, LLC
• AS25091 IP-Max SA
• AS29684 Nour Internet Company for Communications and Information Technology Ltd.
• AS50629 LWLcom GmbH
• AS30815 Detecon Al Saudia Co. Ltd.
• AS15612 ServeCentric Ltd.
• AS34224 Neterra Ltd.
• AS8220 COLT Technology Services Group Limited
• AS6939 Hurricane Electric LLC
• AS13237 euNetworks GmbH
• AS204281 NG LTD
• AS24482 SG.GS
• AS48362 Stadtwerke Feldkirch
• AS1836 green.ch AG
• AS9002 RETN Limited

Downstream networks

• AS64462 Stephan Roland Wolf

Adjacent networks

• AS6461 Zayo Bandwidth
• AS25091 IP-Max SA
• AS174 Cogent Communications, LLC
• AS29684 Nour Internet Company for Communications and Information Technology Ltd.
• AS50629 LWLcom GmbH
• AS30815 Detecon Al Saudia Co. Ltd.
• AS15612 ServeCentric Ltd.
• AS34224 Neterra Ltd.
• AS64462 Stephan Roland Wolf
• AS6939 Hurricane Electric LLC
• AS8220 COLT Technology Services Group Limited
• AS13237 euNetworks GmbH
• AS204281 NG LTD
• AS24482 SG.GS
• AS1836 green.ch AG
• AS48362 Stadtwerke Feldkirch
• AS34019 Hivane Association
• AS9002 RETN Limited

Routing security

• RPKI: 46 valid, 0 invalid and 4 not-found announcements; 25 ROAs.
• ASPA: none published.
• IRR: 86% of announcements registered; 65 route objects.
• Listed in as-sets: AS-40300-CUSTOMERS, AS-AS22911, AS-AS23005, AS-ATHEEB-PEERS, AS-CLOUDSIGMA, AS-CSOUT, AS-EUNCH, AS-EXPONENTIAL-E, AS-GEANT-EUPEER, AS-GEANTNRN, AS-HURRICANEV6, AS-IP-MAX-V6, AS-ITC, AS-LIQUID-DECIXPEERS, AS-MANDA-DECIX-PEERS-V4, AS-MANDA-DECIX-PEERS-V6, AS-MOBILY, AS-NET1OUT, AS-NETERRA-INT, AS-NETIX-DTAG, AS-NETXOUT, AS-NEXTCONNEX, AS-RETN-ACTUAL-V4, AS-RETN-ACTUAL-V6, AS-SERVECENTRIC.

Internet exchanges

• DE-CIX Frankfurt — Frankfurt, Germany
• SwissIX — Zurich, Switzerland