
203938 SAMUEL-COSGROVE - Samuel Cosgrove, GB
Adjacency: 1 Upstream: 1 Downstream: 0
Upstream Adjacent AS list
AS1299 TWELVE99 - Arelion Sweden AB, SE
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 21755 AS203938 ORIGIN Originate: 2816 /20.54 Transit: 0 /0.00 SAMUEL-COSGROVE - Samuel Cosgrove, 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 % 27212 AS203938 SAMUEL-COSGROVE - Samuel Cosgrove, GB 8 2 1 7 1 12.50% Prefix AS Path Aggregation Suggestion 134.202.240.0/22 4777 2516 1299 203938 136.175.222.0/23 4777 2516 1299 203938 + Announce - aggregate of 136.175.222.0/24 (4777 2516 1299 203938) and 136.175.223.0/24 (4777 2516 1299 203938) 136.175.222.0/24 4777 2516 1299 203938 - Withdrawn - aggregated with 136.175.223.0/24 (4777 2516 1299 203938) 136.175.223.0/24 4777 2516 1299 203938 - Withdrawn - aggregated with 136.175.222.0/24 (4777 2516 1299 203938) 163.123.192.0/24 4777 2516 1299 203938 163.123.194.0/24 4777 2516 1299 203938 172.111.32.0/24 4777 2516 1299 203938 205.178.176.0/24 4777 2516 1299 203938 205.220.227.0/24 4777 2516 1299 203938
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS203938 4 More Specifics 8 Total Advertisements SAMUEL-COSGROVE - Samuel Cosgrove, GB
134.202.240.0/22 134.202.0.0/16
136.175.222.0/24 136.175.222.0/23
136.175.223.0/24 136.175.222.0/23
172.111.32.0/24 172.111.32.0/22
whois: 402609
IANA has recorded AS203938 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS203938\n % This is the RIPE Database query service.
% The objects are in RPSL format.
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% 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 'AS203889 - AS203938'
as-block: AS203889 - AS203938
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
% Information related to 'AS203938'
% Abuse contact for 'AS203938' is 'samuel@unlimited.dog'
aut-num: AS203938
as-name: SAMUEL-COSGROVE
org: ORG-SC1268-RIPE
import: from AS52041 accept ANY
export: to AS52041 announce AS203938
import: from AS30456 accept ANY
export: to AS30456 announce AS203938
admin-c: SC27862-RIPE
tech-c: SC27862-RIPE
status: ASSIGNED
mnt-by: RIPE-NCC-END-MNT
mnt-by: lir-uk-sam-1-MNT
created: 2025-11-07T11:50:11Z
last-modified: 2025-11-07T11:50:11Z
source: RIPE
organisation: ORG-SC1268-RIPE
org-name: Samuel Cosgrove
country: GB
reg-nr: Not Applicable
org-type: LIR
address: 17 King Edwards Road
address: HA4 7AE
address: Ruislip
address: UNITED KINGDOM
phone: +44 7806748766
admin-c: SC27862-RIPE
tech-c: SC27862-RIPE
abuse-c: AR79082-RIPE
mnt-ref: lir-uk-sam-1-MNT
mnt-by: RIPE-NCC-HM-MNT
mnt-by: lir-uk-sam-1-MNT
created: 2025-11-06T08:50:52Z
last-modified: 2026-05-13T07:09:25Z
source: RIPE # Filtered
%ERROR:201: access denied for 2401:2000:6660:0:0:0:0:13
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