asn.dev

Autonomous system

AS197439 SYLON

Hosting RIPE Content

IPv4 addresses 512 1 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly CH
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Sylon Hosting

Switzerland · AI-generated

hosting swiss colocation

The AS handle SYLON is held by Sylon Hosting GmbH.

What it's used for

  • The space carries hosting and colocation services, evidenced by the netname SYLON-NET and the registrant Sylon Hosting GmbH.
  • The inventory consists of 512 IPv4 addresses within a single prefix (194.88.212.0/23) and one IPv6 prefix, with only 1 observed neighbour.
  • Traffic from this AS consists of web hosting endpoints and colocation tenants, as Sylon operates its own infrastructure in Basel for web hosting and housing services.

Notable

  • The RDAP registrant Sylon Hosting GmbH matches the AS holder and the netname SYLON-NET.
  • Sylon Hosting has been providing web hosting and housing services since 2000, operating on its own infrastructure in Switzerland.
  • The address inventory is a single contiguous /23 block, typical for a dedicated hosting provider.

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

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

1 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS6772ImproWare AG96

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-31, 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 1 prefixes · 512 addresses IPv6 1 prefixes

CountryNamePrefixes
CHSwitzerland2

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS197439
Registry name
SYLON
Registrant
MNT-SYLON
Abuse contact
abuse@init7.net
Registered
2010-12-01
Last changed
2018-09-04
Allocation
allocated

Declared

PeeringDB profile

self-reported
Name
Sylon Hosting GmbH
Also known as
Sylon
Network type
Content
Scope
Europe
Traffic ratio
Mostly Outbound
Peering policy
Open
Facilities
1 facilities
Website
http://www.sylon.net

PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.

Routing security

RPKI and IRR

Full detail
RPKI
50% valid · 1 valid, 1 with no ROA
ROAs
1 authorising AS197439
ASPA
no ASPA record
IRR
50% registered · 1 of 2 announcements
Route objects
1 naming AS197439

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: 447 networks and 1,843 prefixes, as published 2026-11-01. 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