Autonomous system
AS6772 IMPNET-AS
Residential RIPE
Summary
ImproWare AG (breitband.ch)
isp residential legacy
IMPNET-AS is ImproWare AG, a Swiss internet service provider based in Pratteln, near Basel, which sells broadband under the breitband.ch brand.
What it's used for
- Residential and business broadband. The largest announced block is registered with the netname
BREITBAND-NETand its registry remarks state plainly that it holds "DOCSIS or FTTH DHCP pools", so this is cable and fibre subscriber addressing. - Reverse DNS matches: subscriber addresses resolve in a
cable-static-<address>.breitband.chform.
Notable
- The network carries a legacy
157.161.0.0/16, a full Class B. That is an unusually large holding for a regional provider and makes up most of its roughly 115,000 announced IPv4 addresses. - ImproWare does not own the cable plant. It sells internet over the networks of local cable operators across dozens of municipalities in northwest Switzerland, starting from a partnership with the Pratteln cable co-operative, while running its own ASN, IPv6 (
2001:4060::/32) and network services rather than reselling another carrier's access wholesale.
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 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| SwissIX | Zurich, Switzerland | 91.206.52.20 |
| Equinix Internet Exchange Zurich | Zurich, Switzerland | 194.42.48.39 |
Transit providers
8 upstream, 10 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 2026-10-13, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 9 prefixes · 115K addresses IPv6 16 prefixes
| Country | Name | Prefixes |
|---|---|---|
| CH | Switzerland | 25 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS6772- Registry name
- IMPNET-AS
- Registrant
- IMPNET-MNT
- Abuse contact
- abuse@imp.ch
- Registered
- 2002-09-20
- Last changed
- 2023-10-31
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 6 valid, 0 with no ROA
- ROAs
- 7 authorising AS6772
- ASPA
- no ASPA record
- IRR
- 100% registered · 6 of 6 announcements
- Route objects
- 7 naming AS6772
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: 436 networks and 1,771 prefixes, as published 2026-10-13. 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