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AS21000

Atos France

France (FR)

ASN Information

AS NumberAS21000
AS NameATOS-AS
OrganizationATOS-AS Atos France SAS
Also known asNot available
CountryFrance (FR)
RegistryRIPE NCC
ASN TypeNot available
Last Seen
Announcement Count23
IPv4 Prefix Count23
IPv6 Prefix Count0
RPKI StatusValid ×4NotFound ×19
IRR RecordsView IRR route objects
Websitehttps://atos.net/ ↗

AS Path to AS21000

  1. 37271Workonline Communications(Pty) Ltd - Workonline Communications(Pty) Ltd
  2. 6461ZAYO-6461 - Zayo Bandwidth
  3. 21000Origin

Most common path, seen 16× in route collector data, latest at a collector in Amsterdam (2026-10-21 00:03:51 UTC). Prepends collapsed.

Route Collectors (Visibility)

Sydney: 11 peer session(s)São Paulo: 16 peer session(s)Johannesburg: 19 peer session(s)Singapore: 21 peer session(s)Amsterdam: 24 peer session(s)London: 29 peer session(s)Eugene, OR: 56 peer session(s)
High (10+ peers)Medium (3–9)Low (1–2)

Approximate route collector locations, coloured by peer sessions carrying this AS's routes.

Announced Prefixes (23)

View All →
PrefixFamilyRPKILast Seen
80.78.0.0/24IPv4NotFoundNot looked up yet
80.78.1.0/24IPv4NotFoundNot looked up yet
80.78.2.0/24IPv4NotFoundNot looked up yet
80.78.3.0/24IPv4NotFoundNot looked up yet
80.78.4.0/24IPv4NotFoundNot looked up yet
80.78.5.0/24IPv4NotFoundNot looked up yet
80.78.6.0/24IPv4NotFoundNot looked up yet
80.78.7.0/24IPv4NotFoundNot looked up yet

Peers (4)

View All →
ASNameRelationshipPathsLast Seen
AS6461ZAYO-6461 - Zayo BandwidthUpstream (inferred)704
AS5400BT British Telecommunications LimitedUpstream (inferred)172
AS13335CLOUDFLARENET - Cloudflare, Inc.Upstream (inferred)Inferred—
AS198949Radware Radware LtdUpstream (inferred)Inferred—

Neighbours seen next to AS21000 in public AS paths. These are not confirmed BGP sessions; peer IP addresses and locations are not published by these sources.

Public Peering Exchange Points (1)

IX Updates →
ExchangeLocationIPv4IPv6SpeedRS peerUpdated
France-IX ParisParis, FR37.49.236.1372001:7f8:54::1371GNo

IX ports registered by AS21000 (self-reported by the network).

Interconnection Facilities (1)

FacilityCityCountry
DATA4 Paris Marcoussis - PAR1MarcoussisFrance

Data centres where AS21000 says it can interconnect (self-reported).

IRR AS-SET and Peering Policy

IRR AS-SETNot available
Member of AS-SETsSee IRR page
Peering policyOpen
Multiple locationsNot Required
Ratio requirementNo
ContractNot Required
TrafficNot available
Traffic ratioNot Disclosed
Geographic scopeNot Disclosed
Max prefixes (IPv4 / IPv6)20 / 10
Unicast / IPv6 / MulticastYes / Yes / No
Looking glassNot available
Route serverNot available

Contact Information (1)

RoleNameEmailPhone
TechnicalNOC Atos Francenoc-fr-nwc@atos.net—

Only contacts the network has chosen to publish are shown.

Upstreams (4)

ASNameRelationshipPathsLast Seen
AS6461ZAYO-6461 - Zayo BandwidthUpstream (inferred)704
AS5400BT British Telecommunications LimitedUpstream (inferred)172
AS13335CLOUDFLARENET - Cloudflare, Inc.Upstream (inferred)Inferred—
AS198949Radware Radware LtdUpstream (inferred)Inferred—

Downstreams (0)

No downstream ASNs found for AS21000 in current data sources.

Registry and network details

Registered holderATOS-AS Atos France SAS
RegisteredYes
Peering policyOpen
IRR AS-setNot available
Registry record last modified
MaintainersRIPE-NCC-END-MNT, SVA-INFOGERANCE, MNT-AOI-NSS
Internet exchanges1
Facilities1
Network profile updated

Data updated . See limitations.