Autonomous system
AS25375 LEU-AS
Residential ARIN
Summary
LeuPuls AG
residential isp cable switzerland
The AS handle LEU-AS is held by LeuPuls AG.
What it's used for
- The address space carries residential customer traffic, evidenced by reverse DNS entries such as
cust.dynamic.leunet.chand netnames likeCH-LEUNET. - With 14,848 IPv4 addresses announced across 6 prefixes and 43 observed neighbours, the ratio suggests a regional access provider rather than a transit hub.
Notable
- Registrants are consistent with the announcer, with most prefixes registered to LeuPuls AG, though one prefix (
185.196.84.0/22) is registered to Leucom Stafag AG. - The address inventory is subdivided into multiple blocks, including a large /19 and several /21 and /22 prefixes, reflecting a consolidated corporate estate.
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 |
|---|---|---|
| SwissIX | Zurich, Switzerland | 91.206.52.176 |
Transit providers
8 upstream, 0 downstream and 12 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 2026-10-14, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 6 prefixes · 14.85K addresses IPv6 2 prefixes
| Country | Name | Prefixes |
|---|---|---|
| CH | Switzerland | 8 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS25375- Registry name
- LEU-AS
- Registrant
- LEUNET-SECURITY-MNT
- Abuse contact
- abuse@stafag.ch
- Registered
- 2002-11-04
- Last changed
- 2021-10-25
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 8 valid, 0 with no ROA
- ROAs
- 8 authorising AS25375
- ASPA
- no ASPA record
- IRR
- 100% registered · 8 of 8 announcements
- Route objects
- 9 naming AS25375
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
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 1,772 prefixes, as published 2026-10-15. 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