61373 CTW, GB
Adjacency: 2 Upstream: 2 Downstream: 0
Upstream Adjacent AS list
AS7575 AARNET-AS-AP Australian Academic and Research Network AARNet, AU
AS174 COGENT-174 - Cogent Communications, LLC, US
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 10886 AS61373 ORIGIN Originate: 9216 /18.83 Transit: 0 /0.00 CTW, GB
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 % 3056 AS61373 CTW, GB 21 18 0 3 18 85.71% Prefix AS Path Aggregation Suggestion 185.9.32.0/22 4608 7575 61373 185.9.32.0/23 4608 7575 61373 - Withdrawn - matching aggregate 185.9.32.0/22 4608 7575 61373 185.9.32.0/24 4608 7575 61373 - Withdrawn - matching aggregate 185.9.32.0/22 4608 7575 61373 185.9.33.0/24 4608 7575 61373 - Withdrawn - matching aggregate 185.9.32.0/22 4608 7575 61373 185.9.34.0/23 4608 7575 61373 - Withdrawn - matching aggregate 185.9.32.0/22 4608 7575 61373 185.9.34.0/24 4608 7575 61373 - Withdrawn - matching aggregate 185.9.32.0/22 4608 7575 61373 185.9.35.0/24 4608 7575 61373 - Withdrawn - matching aggregate 185.9.32.0/22 4608 7575 61373 185.50.20.0/22 4608 7575 61373 185.50.20.0/23 4608 7575 61373 - Withdrawn - matching aggregate 185.50.20.0/22 4608 7575 61373 185.50.20.0/24 4608 7575 61373 - Withdrawn - matching aggregate 185.50.20.0/22 4608 7575 61373 185.50.21.0/24 4608 7575 61373 - Withdrawn - matching aggregate 185.50.20.0/22 4608 7575 61373 185.50.22.0/23 4608 7575 61373 - Withdrawn - matching aggregate 185.50.20.0/22 4608 7575 61373 185.50.22.0/24 4608 7575 61373 - Withdrawn - matching aggregate 185.50.20.0/22 4608 7575 61373 185.50.23.0/24 4608 7575 61373 - Withdrawn - matching aggregate 185.50.20.0/22 4608 7575 61373 185.119.60.0/22 4608 7575 61373 185.119.60.0/23 4608 7575 61373 - Withdrawn - matching aggregate 185.119.60.0/22 4608 7575 61373 185.119.60.0/24 4608 7575 61373 - Withdrawn - matching aggregate 185.119.60.0/22 4608 7575 61373 185.119.61.0/24 4608 7575 61373 - Withdrawn - matching aggregate 185.119.60.0/22 4608 7575 61373 185.119.62.0/23 4608 7575 61373 - Withdrawn - matching aggregate 185.119.60.0/22 4608 7575 61373 185.119.62.0/24 4608 7575 61373 - Withdrawn - matching aggregate 185.119.60.0/22 4608 7575 61373 185.119.63.0/24 4608 7575 61373 - Withdrawn - matching aggregate 185.119.60.0/22 4608 7575 61373
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS61373 18 More Specifics 21 Total Advertisements CTW, GB
185.9.32.0/23 185.9.32.0/22
185.9.32.0/24 185.9.32.0/22
185.9.33.0/24 185.9.32.0/22
185.9.34.0/23 185.9.32.0/22
185.9.34.0/24 185.9.32.0/22
185.9.35.0/24 185.9.32.0/22
185.50.20.0/23 185.50.20.0/22
185.50.20.0/24 185.50.20.0/22
185.50.21.0/24 185.50.20.0/22
185.50.22.0/23 185.50.20.0/22
185.50.22.0/24 185.50.20.0/22
185.50.23.0/24 185.50.20.0/22
185.119.60.0/23 185.119.60.0/22
185.119.60.0/24 185.119.60.0/22
185.119.61.0/24 185.119.60.0/22
185.119.62.0/23 185.119.60.0/22
185.119.62.0/24 185.119.60.0/22
185.119.63.0/24 185.119.60.0/22
whois: 402332
IANA has recorded AS61373 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS61373\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 'AS61263 - AS61439'
as-block: AS61263 - AS61439
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: 2020-06-22T15:23:11Z
last-modified: 2020-06-22T15:23:11Z
source: RIPE
% Information related to 'AS61373'
% Abuse contact for 'AS61373' is 'abuse@ctw.net'
aut-num: AS61373
as-name: CTW
org: ORG-CTWL1-RIPE
remarks: Transit/upstream policy is managed in BGP. See AS-SET AS-CTW for announcements
import: from AS174 accept ANY
export: to AS174 announce AS-CTW
import: from AS9002 accept ANY
export: to AS9002 announce AS-CTW
import: from AS8714 accept ANY
export: to AS8714 announce AS-CTW
mp-import: afi ipv6.unicast from AS174 accept ANY
mp-export: afi ipv6.unicast to AS174 announce AS-CTW
mp-import: afi ipv6.unicast from AS9002 accept ANY
mp-export: afi ipv6.unicast to AS9002 announce AS-CTW
mp-import: afi ipv6.unicast from AS8714 accept ANY
mp-export: afi ipv6.unicast to AS8714 announce AS-CTW
admin-c: NS4342-RIPE
tech-c: NS4342-RIPE
status: ASSIGNED
mnt-by: RIPE-NCC-END-MNT
mnt-by: CTW-MNT
created: 2012-11-06T12:26:11Z
last-modified: 2025-12-24T17:52:01Z
source: RIPE
organisation: ORG-CTWL1-RIPE
org-name: Connect The World Ltd.
country: GB
org-type: LIR
address: HMS Wellington
Victoria Embankment
address: WC2R 2PN
address: London
address: UNITED KINGDOM
phone: +443332407200
fax-no: +443332407150
mnt-ref: RIPE-NCC-HM-MNT
mnt-ref: ctw-mnt
mnt-by: RIPE-NCC-HM-MNT
mnt-by: ctw-mnt
abuse-c: CS10238-RIPE
created: 2012-05-23T15:16:06Z
last-modified: 2024-12-10T16:38:36Z
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 1.121.2 (SHETLAND)