Autonomous system
AS12307 RAVANA Sandro Bolliger
Hosting RIPE
Summary
Bolliger Network Solutions
transit hosting
512 addresses and 236 BGP neighbours, registered to one person.
What it's used for
- Interconnection. 512 addresses in two
/24s, two IPv6/32s, and 236 observed BGP neighbours.
Notable
- The registrant is
Sandro Bolliger trading as Bolliger Network Solutions— a sole trader, named in full in the registry. - Both
/24s share netnameCH-SBOLLIGER-20150930, one allocation split into two announcements. - Two separate IPv6
/32s are announced,2a06:8a00::/32and2a06:8a07::/32. - The AS handle is
RAVANA.
Interesting
- The ratio here is the most extreme kind this data produces. Two
/24s is the smallest footprint an operator can hold and still be independently routed; 236 neighbours puts it in the company of national carriers. Whatever this network is for, it is not addresses. - That is what an internet exchange makes possible. Join one, set your route server sessions to accept everyone, and your neighbour count becomes the size of the exchange rather than the size of your business. It costs one port and a membership fee, and a one-person operation ends up peering with more networks than most companies will ever route a packet to.
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 | 91.206.52.68 |
| CH Swiss Internet Exchange | Zurich, Switzerland | 185.1.59.155 |
Transit providers
7 upstream, 4 downstream and 21 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 2026-10-15, 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 · 512 addresses IPv6 2 prefixes
| Country | Name | Prefixes |
|---|---|---|
| CH | Switzerland | 4 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS12307- Registry name
- RAVANA
- Registrant
- mnt-ch-sbolliger-1
- Abuse contact
- abuse@ravana.me
- Registered
- 2015-09-30
- Last changed
- 2024-04-25
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 4 valid, 0 with no ROA
- ROAs
- 5 authorising AS12307
- ASPA
- 5 declared providers
- IRR
- 100% registered · 4 of 4 announcements
- Route objects
- 5 naming AS12307
Reputation
Classification and threat
Hosting Datacenter or cloud provider. Addresses are servers, not people.
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 1,781 prefixes, as published 2026-10-16. 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