AS205394 CSL (DualCom) Limited 🇬🇧 GB

Announcing 22 prefixes, seen at the RIS collectors.

IPv4 prefixes

8,960 (35 × /24)

IPv6 prefixes

12 × /32

Upstreams

transit providers observed

Peers

settlement-free adjacencies

Downstreams

transit customers observed

Customer cone

ASes reachable through it

Registry and operator data

AS number: AS205394
Name: CSL (DualCom) Limited
Organisation: CSL (DualCom)
Country: 🇬🇧 GB
RIR: RIPENCC
Allocated: 2017-09-06
Network type: Enterprise
Scope: Not Disclosed
Peering policy: Open
IRR as-set: RIPE::AS-CSLDUAL
Website: https://www.csl-group.com
PeeringDB: net/17173

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

22 valid (100.0%) 0 invalid (0.0%) 0 no ROA (0.0%)

Whois

Fetched from whois.ripe.net

as-block:       AS203940 - AS205662
descr:          RIPE NCC ASN block
remarks:        These AS Numbers are assigned to network operators in the RIPE NCC service region.
mnt-by:         RIPE-NCC-HM-MNT
created:        2026-03-05T15:29:31Z
last-modified:  2026-03-05T15:29:31Z
source:         RIPE

aut-num:        AS205394
as-name:        CSLDUAL-AS
org:            ORG-CL404-RIPE
import:         from AS44356 accept ANY
export:         to AS44356 announce AS-CSLDUAL
import:         from AS25180 accept ANY
export:         to AS25180 announce AS-CSLDUAL
import:         from AS6939 accept ANY
export:         to AS6939 announce AS-CSLDUAL
import:         from AS8928 accept ANY
export:         to AS8928 announce AS-CSLDUAL
import:         from AS6461 accept ANY
export:         to AS6461 announce AS-CSLDUAL
import:         from AS174 accept ANY
export:         to AS174 announce AS-CSLDUAL
import:         from AS41495 accept ANY
export:         to AS41495 announce AS-CSLDUAL
admin-c:        CDN110-RIPE
admin-c:        PP16243-RIPE
tech-c:         PP16243-RIPE
tech-c:         HFLX-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         uk-csldualcom-1-mnt
created:        2017-09-06T14:29:59Z
last-modified:  2024-06-04T10:27:03Z
source:         RIPE

organisation:   ORG-CL404-RIPE
org-name:       CSL (DualCom) Limited
country:        GB
reg-nr:         03155883
org-type:       LIR
address:        Building 4, Croxley Park, Hatters Lane,
address:        WD18 8YF
address:        Harefield
address:        UNITED KINGDOM
phone:          +44 1895 474474
admin-c:        PP16243-RIPE
admin-c:        SC19281-RIPE
tech-c:         PP16243-RIPE
tech-c:         SC19281-RIPE
abuse-c:        AR40119-RIPE
mnt-ref:        uk-csldualcom-1-mnt
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         uk-csldualcom-1-mnt
created:        2017-05-01T09:01:30Z
last-modified:  2026-05-13T07:38:10Z
source:         RIPE # Filtered

role:           CSL DualCom NOC
address:        Salamander Quay West, Park Lane, Harefield, Middlesex, UB9 6NZ, United Kingdom
nic-hdl:        CDN110-RIPE
mnt-by:         uk-csldualcom-1-mnt
created:        2018-01-29T13:49:05Z
last-modified:  2018-04-05T10:04:50Z
source:         RIPE # Filtered

role:           Faelix Limited Hostmasters
address:        Faelix Limited, M21 9WR, UK
admin-c:        MFLX-RIPE
tech-c:         MFLX-RIPE
nic-hdl:        HFLX-RIPE
mnt-by:         MNT-FAELIX
created:        2007-03-07T18:28:03Z
last-modified:  2008-01-04T11:04:20Z
source:         RIPE # Filtered

person:         Pritesh Patel
address:        Salamander Quay West, Park Lane
address:        UB9 6NZ
address:        Harefield
address:        UNITED KINGDOM
phone:          +44 1895 474474
nic-hdl:        PP16243-RIPE
mnt-by:         uk-csldualcom-1-mnt
created:        2017-05-01T09:01:29Z
last-modified:  2017-05-01T09:01:30Z
source:         RIPE