Autonomous system
AS20900 AS-IMSNETORKS IMSNETWORKS
Unclassified RIPE Cable/DSL/ISP
Summary
IMS Networks
government business transit france
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-FRANCEcovering the majority of the inventory, including large blocks like137.129.64.0/18and137.129.128.0/18. - 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
137.129.0.0/16range, with a few smaller blocks in213.190.0.0/16and31.217.0.0/16. - The single IPv6 prefix
2001:1b08::/32is also associated with the operator.
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 | 37.49.236.23 |
| Equinix Internet Exchange Paris | Paris, France | 195.42.145.128 |
Transit providers
7 upstream, 8 downstream and 19 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 2026-10-24, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 40 prefixes · 78.59K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| FR | France | 41 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS20900- Registry name
- AS-IMSNETORKS
- Registrant
- mnt-fr-imsnetworks-1
- Abuse contact
- abuse@imsnetworks.com
- Registered
- 1970-01-01
- Last changed
- 2024-02-02
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- InterMeDiaSud
- Also known as
- MAN-CASTRES
- Network type
- Cable/DSL/ISP
- Scope
- Europe
- Traffic ratio
- Balanced
- Peering policy
- Open
- Present at
- 2 exchanges
- Facilities
- 3 facilities
- Website
- http://www.imsnetworks.com
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- RPKI
- 69% valid · 18 valid, 8 with no ROA
- ROAs
- 23 authorising AS20900
- ASPA
- no ASPA record
- IRR
- 96% registered · 25 of 26 announcements
- Route objects
- 31 naming AS20900
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: 443 networks and 1,779 prefixes, as published 2026-10-24. 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