Autonomous system
AS15664 SI-BUSINESS
Unclassified RIPE
Summary
Business Solutions
business enterprise isp
The AS handle and the netname are the same string: a country code and one word.
What it's used for
- A company network. One IPv4
/24announced from Slovenia, no IPv6, two hundred and fifty-six addresses, through two observed BGP neighbours.
Notable
- The handle that identifies the autonomous system and the netname that identifies its only block are character for character identical.
- That string is the country code joined to a single generic word, which describes neither the company nor the network.
- The block lists the company and an abuse role, with nothing else in the record.
- The routing archive's earliest observation of this number is the first day it holds data at all, so the network was already announcing before the record begins.
- Three addresses were queried for reverse DNS and none returned a name.
Interesting
- Reusing one string for both fields is the shortest path through a registration form, and it works until the holder needs a second block. Then the netname has to change and the handle cannot.
- A generic word in the identifier makes the record hard to search for. There is no way to tell this network from any other with a similar name except by the number itself.
- Two upstreams for a single small block is more redundancy than the size suggests. The address count is the minimum that can be routed; the neighbour count is what a network buys when reachability matters more than capacity.
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.
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 1 prefixes · 256 addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| SI | Slovenia | 1 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS15664- Registry name
- SI-Business
- Registrant
- AS5603-MNT
- Abuse contact
- abuse@t-2.com
- Registered
- 2009-07-30
- Last changed
- 2023-06-14
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 1 valid, 0 with no ROA
- ROAs
- 1 authorising AS15664
- ASPA
- no ASPA record
- IRR
- 100% registered · 1 of 1 announcements
- Route objects
- 1 naming AS15664
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: 442 networks and 1,773 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