Home ASN LookupAS20900

AS20900 AS-IMSNETORKS IMS Networks SAS

🇫🇷

Org handle: ORG-INS26-RIPE

IMSNETWORKS

RIPE NCCallocated

Announced Prefixes (BGP)

26total

25 IPv41 IPv6

IPv4 Addresses

Allocated (RIR)79,104

Announced (BGP)83,200

IPv6 Addresses

Allocated (RIR)7.9×10²⁸

Announced (BGP)7.9×10²⁸

Prefix Limit (IPv4)

100

Prefix Limit (IPv6)

Country

🇫🇷 FR

RIR

RIPE NCC

Status

allocated

Allocated

2001-07-03

Announced Prefixes

(BGP)26

Prefix	RPKI	IRR	Last Seen
31.217.232.0/21	Valid	RIPE	2026-10-10
31.217.233.0/24	Valid	RIPE	2026-10-10
91.214.114.0/23	Valid	-	2026-10-10
91.231.175.0/24	Valid	RIPE	2026-10-10
137.129.0.0/16	No ROA	RIPE	2026-10-10
137.129.9.0/24	No ROA	-	2026-10-10
137.129.15.0/24	No ROA	-	2026-10-10
137.129.43.0/24	No ROA	-	2026-10-10
137.129.63.0/24	No ROA	-	2026-10-10
137.129.232.0/23	No ROA	-	2026-10-10

1-10 of 26

1 / 3

Allocated Prefixes

(RIR)13

Prefix	Country	RIR	Status
31.217.232.0/21	🇫🇷 FR	RIPENCC	allocated
31.217.233.0/24	🇫🇷 FR	RIPE	assigned
91.214.114.0/23	🇫🇷 FR	RIPENCC	assigned
91.231.175.0/24	🇫🇷 FR	RIPENCC	assigned
137.129.0.0/16	🇫🇷 FR	RIPENCC	assigned
176.111.246.0/24	🇫🇷 FR	RIPENCC	assigned
185.182.252.0/22	🇫🇷 FR	RIPENCC	allocated
194.4.7.0/24	🇫🇷 FR	RIPENCC	assigned
213.190.64.0/19	🇫🇷 FR	RIPENCC	allocated
213.190.64.0/24	🇫🇷 FR	RIPE	assigned

1-10 of 13

1 / 2

All 26 announced prefixes of AS20900 →

BGP Neighbours

(seen in AS paths)

Upstreams (5)

Networks AS20900 hands its own prefixes to: transit providers, or peers at an exchange.

AS174Cogent Communications11
AS3356Level 3 Parent5
AS6762SEABONE NET TELECOM ITALIA SPARKLE S.P.A5
AS22356Durand Do Brasil Ltda3
AS33891CORE BACKBONE Core Backbone2

Downstreams (7)

Networks whose own prefixes AS20900 passes on: usually its customers.

AS50758Airbus Defence And Space Airbus Defence And Space SAS8
AS198340AIRFRANCE Societe Air France S.A5
AS204212LyreG3 La Lyre Du G32
AS204516CAPLASER2
AS204835IMS3 Caisse Nationale Des Allocations Familiales (CNAF)2
AS47233SERC OYA ENERGIES SCIC1
AS209483ALBIANT IT BPCE S.A1

Transfer History

Registry transfers of AS20900 between organisations.

AS20900Transfer · 2022-06-02
SODIATECH SADCS
RIPE NCC
→
IMS Networks SAS
RIPE NCC

Date	Resource	From	To	Type
2022-06-02	AS20900	SODIATECH SADCS RIPE NCC	IMS Networks SAS RIPE NCC	Transfer

ASPA

No ASPA

Abuse Contact

External Links

RIPE Whois RIPEstat

Learn more

What is an ASN?Autonomous systems, ASN ranges and how they are assigned
RPKI and route origin validationWhat the RPKI badges on the prefix list mean
ASPA explainedWhy AS20900 should publish an ASPA object
IPv4 transfers in the RIPE NCC regionMonthly volume and the latest registry transfers
ASN data in AI agents and SIEMMCP server and API integrations

API

Open

GEThttps://api.ipctl.io/v1/asn/20900

Returns ASN details, announced prefixes, and BGP routing data.

curl -s "https://api.ipctl.io/v1/asn/20900" | jq