AS8309 — SIPARTECH

AS8309 announces 8 IPv4 prefixes covering 68,864 addresses and 5 IPv6 prefixes.

About this network

SIPARTECH is Sipartech SAS, a Paris-based independent fibre operator. It builds and lights its own optical network across France and western Europe, selling dark fibre, wavelengths, Ethernet and IP transit to carriers, datacentres and enterprises.

What it's used for

• IP transit and carrier backbone. The AS peers widely (roughly 190 observed BGP neighbours) and carries downstream networks, which is the shape of a transit provider rather than an end-user network.
• The IPv4 footprint is small in address count but structurally significant: a handful of large aggregates such as 62.129.0.0/19, 217.180.128.0/18 and 37.19.128.0/18, most of which get carved into customer assignments.
• Sipartech's core business is the physical layer. The company's own description emphasises dark fibre and optical transmission linking major datacentres and business districts, with IP transit sold on top of that infrastructure.

Notable

• This is infrastructure, not eyeballs. There are no subscriber pools anywhere in the space. What reverse DNS exists is either Sipartech's own operational naming (ns-2.sipartech.com, hosts under transmission-fibre.fr) or a customer's own domain sitting inside a Sipartech block. An IP here should be read as "a network buying transit or fibre from Sipartech", not as a Sipartech end user.
• Some prefixes announced by the AS are registered to other organisations entirely, which is normal for a transit carrier announcing customer space.

Interesting

• Sipartech is one of the few French operators that owns the fibre it sells rather than reselling someone else's, which is why its addressing is modest while its peering and customer cone are not. Address count is a poor proxy for the importance of a network like this.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 37.19.128.0/18
• 62.129.0.0/19
• 144.56.148.0/22
• 144.56.152.0/21
• 144.56.160.0/19
• 144.56.192.0/18
• 185.46.164.0/24
• 217.180.128.0/18
• 2a06:19c0::/29
• 2a13:7505:2::/48
• 2a13:7505:8002::/47
• 2a13:7506:1002::/48
• 2a13:7506:9002::/47

Upstream networks

• AS174 Cogent Communications, LLC
• AS6939 Hurricane Electric LLC
• AS6762 TELECOM ITALIA SPARKLE S.p.A.
• AS1299 Arelion Sweden AB
• AS34549 meerfarbig GmbH & Co. KG
• AS9002 RETN Limited
• AS22652 Videotron Ltee
• AS3356 Level 3 Parent, LLC
• AS50304 Blix Solutions AS
• AS50300 CustodianDC Limited
• AS17639 Converge ICT Solutions Inc.
• AS24482 SG.GS
• AS48185 team.blue NV
• AS48362 Stadtwerke Feldkirch
• AS50628 Leonix Telecom SAS
• AS6696 VERIXI SA
• AS50673 Serverius Holding B.V.
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS37721 Virtual Technologies & Solutions
• AS212024 Marc Schmitt
• AS29632 Netassist International EOOD
• AS3303 Swisscom (Schweiz) AG
• AS3741 Dimension Data
• AS57463 NetIX Communications JSC
• AS5511 Orange S.A.

Downstream networks

• AS56339 Ionis Schools of Technology and Management SAS
• AS15846 Compagnie Francaise d'Assurance pour le Commerce Exterieur S.A.
• AS60532 SEROR TECHNOLOGIES SASU
• AS41653 Aqua Ray SAS
• AS206856 Ecommerce Informatique Services SARL
• AS50954 Eyona SAS
• AS987 WIBX SAS
• AS204596 PATHE CINEMAS SERVICES SNC
• AS210879 Sparteo SAS
• AS203908 PIXAGILITY SAS
• AS3196 7Space SASU
• AS58004 Stime SAS
• AS57951 Yacast France SAS
• AS213184 Telyo SAS
• AS209323 Geneanet SAS
• AS207410 Marignan SAS
• AS211308 NATEIS EURL
• AS39583 Pertineo SAS

Adjacent networks

• AS56339 Ionis Schools of Technology and Management SAS
• AS174 Cogent Communications, LLC
• AS6939 Hurricane Electric LLC
• AS6762 TELECOM ITALIA SPARKLE S.p.A.
• AS210879 Sparteo SAS
• AS15846 Compagnie Francaise d'Assurance pour le Commerce Exterieur S.A.
• AS34549 meerfarbig GmbH & Co. KG
• AS60532 SEROR TECHNOLOGIES SASU
• AS3356 Level 3 Parent, LLC
• AS22652 Videotron Ltee
• AS41653 Aqua Ray SAS
• AS206856 Ecommerce Informatique Services SARL
• AS50304 Blix Solutions AS
• AS50954 Eyona SAS
• AS1299 Arelion Sweden AB
• AS987 WIBX SAS
• AS204596 PATHE CINEMAS SERVICES SNC
• AS50300 CustodianDC Limited
• AS24482 SG.GS
• AS48362 Stadtwerke Feldkirch
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS50673 Serverius Holding B.V.
• AS48185 team.blue NV
• AS3303 Swisscom (Schweiz) AG
• AS37721 Virtual Technologies & Solutions

Internet exchanges

• DE-CIX Frankfurt — Frankfurt, Germany
• LINX LON1 — London, United Kingdom
• AMS-IX Amsterdam — Amsterdam, Netherlands
• Neutral Internet Exchange — Amsterdam, Netherlands
• France-IX Paris — Paris, France
• Equinix Internet Exchange Ashburn — Ashburn, United States
• Seattle Internet Exchange — Seattle, United States
• Coresite - Any2 West — Los Angeles, United States
• Any2 California — Los Angeles, United States
• DE-CIX New York — New York, United States
• Equinix Internet Exchange Paris — Paris, France
• Equinix Internet Exchange Miami — Miami, United States
• France-IX Marseille — Marseille, France
• Megaport Frankfurt IX — Frankfurt, Germany
• DE-CIX Marseille — Marseille, France
• Digital Realty New York Internet Exchange — New York, United States
• Equinix-LA(former Paix) — Los Angeles, United States