Autonomous system
AS12826 CYLLENE-ITS
Residential RIPE
Summary
Cyllene ITS
hosting business enterprise
A French IT provider whose reverse names are built from its own AS number, and whose blocks carry four other companies' names.
What it's used for
- Managed hosting and IT services for business customers. 6,400 addresses across six IPv4 prefixes, one IPv6 prefix, and 46 observed BGP neighbours.
Notable
- The inventory runs
91.151.64.0/20,185.55.164.0/22,185.23.132.0/23,81.80.237.0/24,185.100.193.0/24and195.101.158.0/24, plus2a00:ef60::/32. - Netnames name four different organisations:
FR-CETSI-20061207andFR-CETSI-20140425for Cyllene,FR-ACCELYA-20130410registered to Ventya SAS,Bakker-Logistiek, and two blocks underFR-CONSEILS-ET-SYSTEMES-INFORMATIQUESheld by a national carrier's registry. - Six of eighteen sampled addresses returned names, including
undef-71-255.as12826.cloud,connect.cbsof.netanddw185100193127.amsterdam-tc.bakker-logistiek.nl.
Interesting
- Somebody registered the domain
as12826.cloudand points unassigned addresses atundef-<octets>names under it. Naming your fallback zone after your AS number is a small piece of engineering taste: the number is permanent, unlike any brand, so the zone survives every rename the company will ever go through. - One block is named for a Dutch logistics firm and its addresses answer with hostnames in an Amsterdam site. A customer's network sits inside a French provider's announcements, keeping its own registry record and its own reverse zone.
- Two blocks are still registered under the name of a business absorbed years earlier, and held by a carrier's registry rather than by Cyllene. Acquisitions move the routing before they move the paperwork, and sometimes the paperwork never follows.
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 |
|---|---|---|
| France-IX Paris | Paris, France | 37.49.236.88 |
| Equinix Internet Exchange Paris | Paris, France | 195.42.145.100 |
Transit providers
11 upstream, 1 downstream and 17 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 2026-10-10, 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 · 6.40K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| FR | France | 7 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS12826- Registry name
- CYLLENE-ITS
- Registrant
- CETSI-MNT
- Abuse contact
- abuse@groupe-cyllene.com
- Registered
- 2002-02-27
- Last changed
- 2024-03-11
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 18 valid, 0 with no ROA
- ROAs
- 22 authorising AS12826
- ASPA
- no ASPA record
- IRR
- 100% registered · 18 of 18 announcements
- Route objects
- 24 naming AS12826
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: 431 networks and 1,775 prefixes, as published 2026-10-11. 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