Autonomous system
AS5529 DIAG-AS
Unclassified ARIN
Summary
Diag Dienstleistungen AG
hosting enterprise legacy
DIAG-AS is diag Dienstleistungen AG, a Swiss ICT services company founded in 1981 and based in Lachen, canton Schwyz. It runs its own datacentre capacity and sells hosting and managed IT to Swiss businesses.
What it's used for
- Hosting and private cloud, Microsoft 365 and managed ICT for regional business customers, served from the company's own facilities.
- A small footprint of 512 addresses across two
/24s, sized for an integrator's hosting arm rather than a volume host.
Notable
- This is a hosting and managed-services network. Only a small number of addresses front public websites; most of the space supports customer workloads and internal infrastructure.
- Diag is ISO 27001 certified and leans on Swiss data-residency as a selling point, which is the standard positioning for a small Swiss host competing against the hyperscalers.
Interesting
- The company predates the commercial internet by more than a decade, having started as an IT services firm in 1981 and grown into hosting from there. Plenty of small European hosts have that shape: an integrator that eventually bought racks.
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 1 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS41913 | Computerline GmbH | 118 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-18, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 2 prefixes · 512 addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| CH | Switzerland | 2 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS5529- Registry name
- DIAG-AS
- Registrant
- MNT-COMPUTERLINE
- Abuse contact
- diag@diag.ch
- Registered
- 2009-01-21
- Last changed
- 2022-05-20
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 2 with no ROA
- ROAs
- 0 authorising AS5529
- ASPA
- no ASPA record
- IRR
- 100% registered · 2 of 2 announcements
- Route objects
- 2 naming AS5529
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
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 1,784 prefixes, as published 2026-10-19. 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