Autonomous system
AS215960 HOLLANDER-JACOBSEN Hollander & Jacobsen UG (haftungsbeschraenkt)
Unclassified RIPE
Summary
Hollander & Jacobsen UG
business it-services germany
The AS handle HEARTBEAT-IT is held by Hollander & Jacobsen UG (haftungsbeschraenkt).
What it's used for
- The address space carries IT service infrastructure, evidenced by the netnames
DE-HOLLANDER-JACOBSEN-19970609andDE-HOLLANDER-JACOBSEN-20160520and reverse DNS entries such aseea823ed67d6622bcaa4b5d0cfd35bd4.hostedonsporestack.comandwebsites. - The network announces 1280 IPv4 addresses across 2 prefixes and 1 IPv6 prefix, with only 1 observed neighbour, indicating a small-scale internal or service-oriented estate rather than a transit or access network.
- Traffic from this AS consists of web hosting and IT service endpoints for the operator's business, given its role as a German IT services provider.
Notable
- Registrants for both announced prefixes are
Network Operations Center; Hollander & Jacobsen UG (haftungsbeschraenkt); Abuse-C Role, which aligns with the AS holder. - The address inventory is compact, consisting of one /22 and one /24 block, with no indication of large-scale subdivision or external leasing.
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 |
|---|---|---|
| AS206075 | Hollander & Jacobsen UG (haftungsbeschraenkt) | 350 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-08, 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 · 1.28K addresses IPv6 2 prefixes
| Country | Name | Prefixes |
|---|---|---|
| DE | Germany | 4 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS215960- Registry name
- HOLLANDER-JACOBSEN
- Registrant
- lir-de-hollander-jacobsen-1-MNT
- Abuse contact
- abuse@hollander-jacobsen.de
- Registered
- 2023-11-21
- Last changed
- 2025-10-16
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- heartbeat IT
- Scope
- Not Disclosed
- Traffic ratio
- Not Disclosed
- Peering policy
- No
- Website
- https://heartbeat-it.com
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 · 7 valid, 0 with no ROA
- ROAs
- 7 authorising AS215960
- ASPA
- 1 declared providers
- IRR
- 100% registered · 7 of 7 announcements
- Route objects
- 7 naming AS215960
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: 455 networks and 1,854 prefixes, as published 2026-11-09. 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