AS12727 — VIALIS Colmar, France

Network type: residential

AS12727 announces 4 IPv4 prefixes covering 14,336 addresses and 2 IPv6 prefixes.

About this network

A municipal utility in Colmar that also sells Internet access, holding two IPv6 /31s.

What it's used for

• Local access networking in Alsace. 15,360 addresses in five IPv4 prefixes, two IPv6 prefixes, and 43 observed BGP neighbours.

Notable

• Every block carries the same holder and the same contact, VIALIS ADMINISTRATION RESEAUX.
• The dated netnames run FR-VIALIS-20000426, 20090728, 20110301, 20111025 and 20131031.
• The IPv6 announcements are 2a03:d600::/31 and 2a03:d604::/31.
• SEM in the holder name marks a société d'économie mixte, a company jointly held by a local authority and private shareholders.
• Fifteen sampled addresses were queried and none returned a name.

Interesting

• A /31 is twice the standard IPv6 allocation, and holding two of them is an unusual amount of address space for a network serving one part of one French département. It also sits on an odd bit boundary, which means the reverse zones for it cannot be delegated as a single unit.
• Municipal utilities make natural Internet providers, and the reason is trenches. An organisation that already runs gas, electricity or district heating under the streets owns the one asset a new entrant cannot buy, and adding fibre to an existing duct costs a fraction of digging for it.
• Five allocations spread across thirteen years, each one a step up in size, is the growth curve of a network that kept its customers. The public shareholding is why it could keep asking: the returns went back into the ground rather than out to a parent company.

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

Announced prefixes

• 31.24.240.0/21
• 130.185.184.0/21
• 188.64.240.0/21
• 213.166.192.0/19
• 2a03:d600::/31
• 2a03:d604::/31

Upstream networks

• AS174 Cogent Communications, LLC
• AS6939 Hurricane Electric LLC
• AS15557 SFR SA
• AS6762 TELECOM ITALIA SPARKLE S.p.A.
• AS50628 Leonix Telecom SAS
• AS24482 SG.GS
• AS37721 Virtual Technologies & Solutions
• AS9002 RETN Limited
• AS25091 IP-Max SA
• AS20766 Association "Gitoyen"

Downstream networks

• AS208719 Vialis SEM
• AS208574 Communaute de Communes du Pays de Bitche

Adjacent networks

• AS6939 Hurricane Electric LLC
• AS174 Cogent Communications, LLC
• AS208719 Vialis SEM
• AS208574 Communaute de Communes du Pays de Bitche
• AS6762 TELECOM ITALIA SPARKLE S.p.A.
• AS15557 SFR SA
• AS24482 SG.GS
• AS50628 Leonix Telecom SAS
• AS37721 Virtual Technologies & Solutions
• AS9002 RETN Limited
• AS25091 IP-Max SA
• AS20766 Association "Gitoyen"
• AS35661 VIRTUA SYSTEMS SAS
• AS34019 Hivane Association

Internet exchanges

• France-IX Paris — Paris, France