Autonomous system
AS8312 ZYLON-AS
Hosting RIPE
Summary
Zylon
hosting isp legacy
ZYLON-AS is Zylon, a Dutch network and hosting operator (registered in RIPE as Bas Smit trading as Zylon). It runs a small multihomed network out of the Netherlands carrying hosted servers, virtual machines and business connectivity.
What it's used for
- Hosting. Reverse DNS across the announced prefixes is dominated by provider-assigned names on
zylon.netandas8312.net, includingunused.zylon.netplaceholders on free addresses and dedicated-server records. - Whole ranges are handed to hosting brands and resellers that sit on top of the AS, so hostnames from several unrelated Dutch hosting companies appear inside the space.
- Static business assignments show up as
customer-NNN.SUBNET.zylon.net, alongside a handful of end-customer domains including Dutch municipal and SaaS systems.
Notable
- The customer domains are not the operator. A Dutch municipality or a payments platform resolving inside these prefixes is a Zylon hosting customer, not evidence of who runs the network.
- The footprint is genuinely small (a few thousand addresses over about nine prefixes), and it looks like a real provider network with its own PTR conventions and NS records, not an assembled portfolio of unrelated blocks.
- No subscriber pools: no PPPoE, DSL or dynamic naming anywhere in the space.
Interesting
- The
unused.zylon.netconvention is a nice operational tell. The provider labels every unallocated address in its blocks, which makes it easy to see how much of the range is actually in service.
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
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.
| AS | Network | Paths seen |
|---|---|---|
| AS31477 | Duocast B.V. | 555 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-16, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 8 prefixes · 5.12K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| NL | Netherlands | 9 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS8312- Registry name
- ZYLON-AS
- Registrant
- Bas Smit trading as Zylon
- Abuse contact
- zylon@zylon.net
- Registered
- 2004-11-11
- Last changed
- 2019-12-04
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 90% valid · 9 valid, 1 with no ROA
- ROAs
- 13 authorising AS8312
- ASPA
- no ASPA record
- IRR
- 100% registered · 10 of 10 announcements
- Route objects
- 11 naming AS8312
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: 442 networks and 1,783 prefixes, as published 2026-10-17. 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