This AS is not currently used to announce prefixes in the global routing table, nor is it used as a visible transit AS.
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS15917 3 More Specifics 4 Total Advertisements CSC-UK-MWH, GB
20.155.48.0/20 20.154.0.0/15
217.31.0.0/22 217.31.0.0/20
217.31.4.0/22 217.31.0.0/20
whois: 402590
IANA has recorded AS15917 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS15917\n % This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See https://docs.db.ripe.net/terms-conditions.html
% Note: this output has been filtered.
% Information related to 'AS15835 - AS15963'
as-block: AS15835 - AS15963
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: 2018-11-22T15:27:25Z
last-modified: 2018-11-22T15:27:25Z
source: RIPE
% Information related to 'AS15917'
% Abuse contact for 'AS15917' is 'abuse@dxc.com'
aut-num: AS15917
as-name: CSC-UK-MWH
org: ORG-CSC1-RIPE
import: from AS702 action pref=20; accept ANY
import: from AS7990 action pref=50; accept ANY
export: to AS702 announce AS15917
export: to AS7990 announce AS15917
admin-c: DTIT1-RIPE
tech-c: DTIT1-RIPE
status: ASSIGNED
mnt-by: RIPE-NCC-END-MNT
mnt-by: CSCUK-MNT
created: 1970-01-01T00:00:00Z
last-modified: 2025-11-18T19:07:57Z
source: RIPE
organisation: ORG-CSC1-RIPE
org-name: CSC Computer Sciences Ltd
country: GB
reg-nr: 00963578
org-type: LIR
address: 110 Pinehurst Road, Farnborough Business Park
address: GU14 7BF
address: Farnborough, Hampshire
address: UNITED KINGDOM
phone: +49 61114223653
phone: +44 1257 236315
abuse-c: DTAT1-RIPE
mnt-ref: RIPE-NCC-HM-MNT
mnt-ref: CSCUK-MNT2
mnt-by: RIPE-NCC-HM-MNT
mnt-by: CSCUK-MNT2
admin-c: MR10069-RIPE
admin-c: DTIT1-RIPE
created: 2004-04-17T12:12:53Z
last-modified: 2026-05-13T07:24:13Z
source: RIPE # Filtered
%ERROR:201: access denied for 2401:2000:6660:0:0:0:0:13
%
% Queries from your IP address have passed the daily limit of controlled objects.
% Access from your host has been temporarily denied.
% For more information, see
% https://docs.db.ripe.net/FAQ#why-did-i-receive-an-error-201-access-denied
% This query was served by the RIPE Database Query Service version 1.122.1 (SHETLAND)