asn.dev

Autonomous system

AS50837 CLOUDSIGMA-AS

Hosting RIPE

IPv4 addresses 14.34K 22 prefixes
IPv6 prefixes 4 counted as prefixes, not addresses
Countries 1 mostly CH
Exchanges 2 recorded by PCH
Upstreams 23 1 downstream
Flagged prefixes 0 none

Summary

CloudSigma

Switzerland · AI-generated

cloud hosting business swiss

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. Source, and how to suggest an edit.

Interconnection

Peering at a glance

Full topology · Graph

Internet exchanges

Recorded at 2 exchanges in 2 countries, largest first.

ExchangeLocationTheir address
DE-CIX FrankfurtFrankfurt, Germany80.81.194.151
SwissIXZurich, Switzerland91.206.52.118

Transit providers

23 upstream, 1 downstream and 37 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS6461Zayo Bandwidth467
AS174Cogent Communications, LLC423
AS25091IP-Max SA393
AS29684Nour Internet Company for Communications and Information Technology Ltd.356
AS30815Detecon Al Saudia Co. Ltd.240
AS50629LWLcom GmbH210
AS15612ServeCentric Ltd.180
AS34224Neterra Ltd.157

All 23 upstreams →

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-13, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 22 prefixes · 14.34K addresses IPv6 4 prefixes

CountryNamePrefixes
CHSwitzerland26

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS50837
Registry name
CLOUDSIGMA-AS
Registrant
MNT-CLOUDSIGMA
Abuse contact
abuse@cloudsigma.com
Registered
2010-04-07
Last changed
2025-02-14
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
92% valid · 46 valid, 4 with no ROA
ROAs
25 authorising AS50837
ASPA
no ASPA record
IRR
94% registered · 47 of 50 announcements
Route objects
65 naming AS50837

Reputation

Classification and threat

Hosting Datacenter or cloud provider. Addresses are servers, not people.

Spamhaus DROP

Not on ASN-DROP The network as a whole is not listed.

No DROP prefixes None of its announced space is on the DROP prefix list.

Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 436 networks and 1,771 prefixes, as published 2026-10-13. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.

FBI IC3

No IC3 indicators Nothing from the FBI IC3 feed.

IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.

Elsewhere

Cross-check