AS21301 Natwest Markets PLC 🇬🇧 GB

Announcing 15 prefixes, seen at the RIS collectors.

IPv4 prefixes

135,424 (529 × /24)

IPv6 prefixes

Upstreams

transit providers observed

Peers

settlement-free adjacencies

Downstreams

transit customers observed

Customer cone

ASes reachable through it

Registry and operator data

AS number: AS21301
Name: Natwest Markets PLC
Organisation: Natwest Markets PLC
Country: 🇬🇧 GB
RIR: RIPENCC
Allocated: 2001-10-24

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

0 valid (0.0%) 0 invalid (0.0%) 15 no ROA (100.0%)

Whois

Fetched from whois.ripe.net

as-block:       AS21281 - AS21390
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:        2018-11-22T15:27:28Z
last-modified:  2018-11-22T15:27:28Z
source:         RIPE

aut-num:        AS21301
as-name:        UK-NATWEST-AS21301
descr:          EDINBURGH
org:            ORG-TRBo1-RIPE
import:         from AS1273 action pref=100; accept ANY
import:         from AS32787 action pref=100; accept ANY
import:         from AS2856 action pref=100; accept ANY
export:         to AS1273 announce AS21301
export:         to AS32787 announce AS21301
export:         to AS2856 announce AS21301
tech-c:         RTST1-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
admin-c:        CL5041-RIPE
mnt-by:         RBSG-MNT
created:        2001-10-24T12:23:55Z
last-modified:  2026-04-10T15:50:30Z
source:         RIPE
sponsoring-org: ORG-UA24-RIPE

organisation:   ORG-TRBO1-RIPE
org-name:       Natwest Markets PLC
country:        GB
reg-nr:         Not Applicable
org-type:       OTHER
address:        135 Bishopsgate London EC2M 3UR UK
abuse-c:        AR30109-RIPE
phone:          +44 20 3361 7879
mnt-ref:        AS1849-MNT
mnt-by:         AS1849-MNT
created:        2009-12-18T13:54:36Z
last-modified:  2026-05-13T06:45:20Z
source:         RIPE # Filtered

role:           Technical Role
address:        250 Bishopsgate
address:        London
address:        EC2M 3UR
abuse-mailbox:  ripe-abuse@rbs.com
nic-hdl:        RTST1-RIPE
mnt-by:         RBSG-MNT
created:        2018-03-23T12:27:34Z
last-modified:  2026-04-10T15:08:40Z
source:         RIPE # Filtered

person:         Sean Jarvis
address:        250 Bishopsgate
address:        London
address:        EC2M 3UR
phone:          +44 7972 792793
nic-hdl:        CL5041-RIPE
mnt-by:         RBSG-MNT
created:        2012-08-13T13:30:01Z
last-modified:  2026-04-10T14:49:33Z
source:         RIPE # Filtered