AS20900 — AS-IMSNETORKS IMSNETWORKS

AS20900 announces 14 IPv4 prefixes covering 78,592 addresses and 1 IPv6 prefixes.

About this network

AS-IMSNETORKS is operated by IMS Networks SAS.

What it's used for

• The address space is predominantly allocated to Meteo-France EPA, with netnames such as FR-METEO-FRANCE covering the majority of the inventory, including large blocks like 137.129.64.0/18 and 137.129.128.0/18.
• A smaller portion of the space is registered to IMS Networks SAS itself, with netnames like FR-IMSNETWORKS-20000320, indicating the operator's own infrastructure or leased capacity.
• With 78,592 IPv4 addresses announced across 40 prefixes and 62 observed neighbours, the ratio suggests a role that combines internal corporate connectivity for a major national agency with some transit or peering functions.

Notable

• Registrants are split between Meteo-France EPA and IMS Networks SAS, reflecting a relationship where the ISP likely provides connectivity or manages the network estate for the national meteorological service.
• The address inventory is heavily concentrated in the 137.129.0.0/16 range, with a few smaller blocks in 213.190.0.0/16 and 31.217.0.0/16.
• The single IPv6 prefix 2001:1b08::/32 is also associated with the operator.

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

Announced prefixes

• 31.217.232.0/21
• 91.214.114.0/23
• 91.231.175.0/24
• 137.129.0.0/16
• 176.111.246.0/24
• 185.182.252.0/22
• 194.4.7.0/24
• 194.4.10.0/24
• 194.4.12.0/23
• 213.190.64.0/22
• 213.190.68.0/23
• 213.190.71.0/24
• 213.190.72.0/21
• 213.190.80.0/20
• 2001:1b08::/32

Upstream networks

• AS3356 Level 3 Parent, LLC
• AS174 Cogent Communications, LLC
• AS6939 Hurricane Electric LLC
• AS6762 TELECOM ITALIA SPARKLE S.p.A.
• AS6696 VERIXI SA
• AS34927 iFog GmbH
• AS12779 IT.Gate S.p.A.
• AS24482 SG.GS
• AS50628 Leonix Telecom SAS
• AS57463 NetIX Communications JSC
• AS37721 Virtual Technologies & Solutions
• AS20766 Association "Gitoyen"

Downstream networks

• AS50758 Airbus Defence and Space SAS
• AS198340 Societe Air France S.A.
• AS204516 CAPLASER SA
• AS204212 La Lyre du G3
• AS204835 Caisse Nationale des Allocations Familiales (CNAF)
• AS47233 OYA ENERGIES SCIC
• AS209483 BPCE S.A.

Adjacent networks

• AS3356 Level 3 Parent, LLC
• AS174 Cogent Communications, LLC
• AS50758 Airbus Defence and Space SAS
• AS6939 Hurricane Electric LLC
• AS198340 Societe Air France S.A.
• AS6762 TELECOM ITALIA SPARKLE S.p.A.
• AS204516 CAPLASER SA
• AS204212 La Lyre du G3
• AS204835 Caisse Nationale des Allocations Familiales (CNAF)
• AS47233 OYA ENERGIES SCIC
• AS209483 BPCE S.A.
• AS24482 SG.GS
• AS6696 VERIXI SA
• AS57463 NetIX Communications JSC
• AS20766 Association "Gitoyen"
• AS37721 Virtual Technologies & Solutions
• AS12779 IT.Gate S.p.A.
• AS50628 Leonix Telecom SAS
• AS34927 iFog GmbH

Internet exchanges

• France-IX Paris — Paris, France
• Equinix Internet Exchange Paris — Paris, France