Autonomous system
AS44973 RZHAS-AS ********** Arelion **********
Unclassified RIPE NSP
Summary
Rechenzentrum Hassfurt
hosting datacenter transit
RZHAS-AS is operated by Rechenzentrum Hassfurt GmbH.
What it's used for
- The address space carries data center infrastructure, with netnames
DE-RZHAS-20080327andDE-RZHAS-20151204registered to Rechenzentrum Hassfurt GmbH. - The AS announces 2048 IPv4 addresses across 2 prefixes and 1 IPv6 prefix, while maintaining 101 observed neighbours; this ratio of limited address space against a high neighbour count indicates a transit or peering-heavy role.
- Traffic from this AS consists of hosted server workloads, rack-space tenants, and data center backhaul, as the operator provides hosting, housing, and redundant backbone services.
Notable
- Registrants for both announced prefixes match the AS holder, Rechenzentrum Hassfurt GmbH.
- The address inventory is compact, consisting of two /22 IPv4 blocks and a single /29 IPv6 block.
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 1 exchange in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| DE-CIX Frankfurt | Frankfurt, Germany | 80.81.194.164 |
Transit providers
17 upstream, 2 downstream and 29 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-28, 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 · 2.05K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| DE | Germany | 3 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS44973- Registry name
- RZHAS-AS
- Registrant
- Rechenzentrum Hassfurt GmbH
- Abuse contact
- abuse@rzhas.de
- Registered
- 2008-04-11
- Last changed
- 2026-02-08
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- Rechenzentrum Hassfurt
- Network type
- NSP
- Scope
- Europe
- Traffic ratio
- Balanced
- Peering policy
- Open
- IRR as-set
AS-RZHAS- Present at
- 1 exchanges
- Website
- https://www.rzhas.de/
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
- RPKI
- 100% valid · 3 valid, 0 with no ROA
- ROAs
- 5 authorising AS44973
- ASPA
- no ASPA record
- IRR
- 100% registered · 3 of 3 announcements
- Route objects
- 4 naming AS44973
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: 448 networks and 1,849 prefixes, as published 2026-10-29. 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