Autonomous system
AS15725 IKS
Unclassified RIPE
Summary
IKS Service
isp hosting business
Nineteen IPv6 routes for four IPv4 ones, announced as a staircase that doubles at every step.
What it's used for
- A regional provider. Four IPv4 prefixes and nineteen IPv6 prefixes announced from Germany, four thousand six hundred and eight addresses, across five observed BGP neighbours.
Notable
- The IPv6 announcements run through
/48,/47,/46,/45,/44,/43,/42,/41,/40and/39, each step twice the size of the one before it. - That sequence is what covering a range with edges that do not fall on one block boundary produces: the largest piece that fits is taken at each point until the range is tiled.
- Nearly five times as many IPv6 routes as IPv4 ones is the reverse of the usual ratio.
- The netnames carry a country code, the brand and a city, with three of the four blocks sharing a single allocation date and the fourth filed fifteen years later.
- The one answering address puts the four octets hyphenated in front of a label for the network, then the company domain with the city hyphenated into it.
- Twelve addresses were queried and one returned a name.
Interesting
- The same doubling staircase appears on an energy utility elsewhere in this range. It is not a habit of one operator but a property of the arithmetic, and any network announcing part of an allocation produces one.
- A city inside both the netname and the domain is a provider that has never needed to be anywhere else.
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 4 prefixes · 4.61K addresses IPv6 19 prefixes
| Country | Name | Prefixes |
|---|---|---|
| DE | Germany | 23 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS15725- Registry name
- IKS
- Registrant
- IKS-MNT
- Abuse contact
- abuse@iks-jena.de
- Registered
- 2002-07-19
- Last changed
- 2026-01-23
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 3 valid, 0 with no ROA
- ROAs
- 3 authorising AS15725
- ASPA
- no ASPA record
- IRR
- 100% registered · 3 of 3 announcements
- Route objects
- 3 naming AS15725
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 1,771 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