Autonomous system
AS8489 PORTAL-TO-WEB EDV Beratung Mersberger
Unclassified RIPE
Summary
EDV Beratung Mersberger (Portal-to-Web)
hosting legacy
PORTAL-TO-WEB belongs to EDV Beratung Mersberger, a small German IT consultancy in Türkheim, Bavaria, trading under the portal-to-web.de name. It is essentially a one-office operation that happens to run its own BGP network.
What it's used for
- Hosting and connectivity for the consultancy's own services and for a small number of German customers.
- Routing provider-independent address space on behalf of those customers, so they keep their addresses independently of any single upstream.
Notable
- About 1,500 IPv4 addresses across five prefixes plus two IPv6
/48s, behind a single upstream. Only a couple of dozen domains resolve into the space. - Some prefixes are RIPE PI blocks registered to other German parties (netnames such as
WEILHAMMER-NETandECKEL-NET-1) rather than to Mersberger. This is the normal shape of a small provider announcing customer PI space, not an address-broker: every block is German, RIPE-registered, held by a settled registrant, and assigned in 2003–2007. Even so, do not attribute those prefixes' owners to the AS holder.
Interesting
- The AS is a good example of how low numbers survive in odd corners: a four-digit AS carrying less address space than a single home ISP allocation, run by a consultancy rather than a carrier.
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
Recorded at 2 exchanges in 2 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| 4b42 Internet Exchange Point | Zurich, Switzerland | 185.1.125.37 |
| Local Internet Exchange Düsseldorf | Düsseldorf, Germany | 185.1.155.191 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 5 prefixes · 1.54K addresses IPv6 2 prefixes
| Country | Name | Prefixes |
|---|---|---|
| DE | Germany | 7 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS8489- Registry name
- PORTAL-TO-WEB
- Registrant
- Martin Mersberger EDV Beratung
- Abuse contact
- abuse@portal-to-web.de
- Registered
- 2011-08-03
- Last changed
- 2025-09-22
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 7 with no ROA
- ROAs
- 0 authorising AS8489
- ASPA
- no ASPA record
- IRR
- 100% registered · 7 of 7 announcements
- Route objects
- 8 naming AS8489
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: 432 networks and 1,768 prefixes, as published 2026-10-12. 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