21254 CTM-ASN - CITCO TECHNOLOGY MANAGEMENT (SWITZERLAND) SA, CH
Adjacency: 1 Upstream: 1 Downstream: 0
Upstream Adjacent AS list
AS8220 COLT - COLT Technology Services Group Limited, GB
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 30134 AS21254 ORIGIN Originate: 1536 /21.42 Transit: 0 /0.00 CTM-ASN - CITCO TECHNOLOGY MANAGEMENT (SWITZERLAND) SA, CH
Aggregation Suggestions
Filter: Aggregates, Specifics
This report does not take into account conditions local to each origin AS in terms of policy or traffic engineering requirements, so this is an approximate guideline as to aggregation possibilities.
Rank AS AS Name Current Wthdw Aggte Annce Redctn % 12393 AS21254 CTM-ASN - CITCO TECHNOLOGY MANAGEMENT (SWITZE 6 4 1 3 3 50.00% Prefix AS Path Aggregation Suggestion 77.246.128.0/22 4777 2516 8220 21254 + Announce - aggregate of 77.246.128.0/23 (4777 2516 8220 21254) and 77.246.130.0/23 (4777 2516 8220 21254) 77.246.128.0/24 4777 2516 8220 21254 - Withdrawn - aggregated with 77.246.129.0/24 (4777 2516 8220 21254) 77.246.129.0/24 4777 2516 8220 21254 - Withdrawn - aggregated with 77.246.128.0/24 (4777 2516 8220 21254) 77.246.130.0/24 4777 2516 8220 21254 - Withdrawn - aggregated with 77.246.131.0/24 (4777 2516 8220 21254) 77.246.131.0/24 4777 2516 8220 21254 - Withdrawn - aggregated with 77.246.130.0/24 (4777 2516 8220 21254) 77.246.133.0/24 4777 2516 8220 21254 77.246.134.0/24 4777 2516 8220 21254
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS21254 6 More Specifics 6 Total Advertisements CTM-ASN - CITCO TECHNOLOGY MANAGEMENT (SWITZERLAND) SA, CH
77.246.128.0/24 77.246.128.0/20
77.246.129.0/24 77.246.128.0/20
77.246.130.0/24 77.246.128.0/20
77.246.131.0/24 77.246.128.0/20
77.246.133.0/24 77.246.128.0/20
77.246.134.0/24 77.246.128.0/20
whois: 402603
IANA has recorded AS21254 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS21254\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 'AS21243 - AS21270'
as-block: AS21243 - AS21270
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: 2018-11-22T15:27:27Z
last-modified: 2018-11-22T15:27:27Z
source: RIPE
% Information related to 'AS21254'
% Abuse contact for 'AS21254' is 'seniorwanadmin@citco.com'
aut-num: AS21254
as-name: CTM-ASN
org: ORG-CTMI1-RIPE
import: from AS702 accept ANY
import: from AS3257 accept ANY
import: from AS8928 accept ANY
import: from AS8220 accept ANY
import: from AS5466 accept ANY
export: to AS702 announce AS21254
export: to AS3257 announce AS21254
export: to AS8928 announce AS21254
export: to AS8220 announce AS21254
export: to AS5466 announce AS21254
admin-c: CR4655-RIPE
admin-c: CR4655-RIPE
tech-c: CR4655-RIPE
tech-c: CR4655-RIPE
status: ASSIGNED
mnt-by: RIPE-NCC-END-MNT
mnt-by: CTM-MNT
created: 2007-05-25T14:46:55Z
last-modified: 2025-12-16T15:14:05Z
source: RIPE
organisation: ORG-CTMI1-RIPE
org-name: CITCO TECHNOLOGY MANAGEMENT (SWITZERLAND) SA
country: CH
reg-nr: CHE-115.720.138
org-type: LIR
address: ROUTE DE ST-CERGUE 9
address: 1260
address: NYON
address: SWITZERLAND
phone: +1-980-233-6502
fax-no: +1-980-233-6503
abuse-c: AR14286-RIPE
admin-c: CR4655-RIPE
admin-c: MP12606-RIPE
mnt-ref: RIPE-NCC-HM-MNT
mnt-by: CTM-MNT
mnt-ref: CTM-MNT
mnt-by: RIPE-NCC-HM-MNT
tech-c: CR4655-RIPE
created: 2007-02-20T11:11:03Z
last-modified: 2026-05-13T07:16:28Z
source: RIPE # Filtered
%ERROR:201: access denied for 2401:2000:6660:0:0:0:0:13
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