21339 CONTINGENCYNETWORKS, GB
Adjacency: 1 Upstream: 1 Downstream: 0
Upstream Adjacent AS list
AS3170 VELOXSERV, GB
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 19743 AS21339 ORIGIN Originate: 3072 /20.42 Transit: 0 /0.00 CONTINGENCYNETWORKS, 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 % 21636 AS21339 CONTINGENCYNETWORKS, GB 6 2 1 5 1 16.67% Prefix AS Path Aggregation Suggestion 45.143.120.0/22 4777 2516 3257 3170 21339 + Announce - aggregate of 45.143.120.0/23 (4777 2516 3257 3170 21339) and 45.143.122.0/23 (4777 2516 3257 3170 21339) 45.143.120.0/23 4777 2516 3257 3170 21339 - Withdrawn - aggregated with 45.143.122.0/23 (4777 2516 3257 3170 21339) 45.143.122.0/23 4777 2516 3257 3170 21339 - Withdrawn - aggregated with 45.143.120.0/23 (4777 2516 3257 3170 21339) 158.94.215.0/24 4777 2516 3257 3170 21339 176.124.68.0/23 4777 2516 3257 3170 21339 185.61.164.0/22 4777 2516 3257 3170 21339 193.187.99.0/24 4777 2516 3257 3170 21339
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS21339 2 More Specifics 6 Total Advertisements CONTINGENCYNETWORKS, GB
45.143.120.0/23 45.143.120.0/22
45.143.122.0/23 45.143.120.0/22
whois: 402332
IANA has recorded AS21339 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS21339\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 'AS21281 - AS21390'
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
% Information related to 'AS21339'
% Abuse contact for 'AS21339' is 'jon@contingencynetworks.co.uk'
aut-num: AS21339
as-name: ContingencyNetworks
org: ORG-CNL16-RIPE
import: from AS8468 accept ANY
export: to AS8468 announce AS21339
import: from AS43620 accept ANY
export: to AS43620 announce AS21339
import: from AS43531 accept ANY
export: to AS43531 announce AS21339
import: from AS6939 accept ANY
export: to AS6939 announce AS-CONTINGENCY
import: from AS60945 accept ANY
import: from AS8550 accept ANY
import: from AS3170 accept ANY
export: to AS8550 announce AS21339
export: to AS60945 announce AS21339
export: to AS-ANY announce AS21339:AS-ALL
export: to AS3170 announce AS21339
import: from AS57155 accept ANY
export: to AS57155 announce AS21339
admin-c: JR5606-RIPE
tech-c: JR5606-RIPE
status: ASSIGNED
mnt-by: RIPE-NCC-END-MNT
mnt-by: CNL-MAINT
created: 2012-09-06T12:07:32Z
last-modified: 2021-06-22T15:38:36Z
source: RIPE
organisation: ORG-CNL16-RIPE
org-name: Contingency Networks Ltd
country: GB
org-type: LIR
address: 71-75 Shelton Street, Covent Garden
address: WC2H 9JQ
address: London
address: UNITED KINGDOM
phone: +447974430402
abuse-c: AC28397-RIPE
mnt-ref: RIPE-NCC-HM-MNT
mnt-ref: CNL-MAINT
mnt-by: RIPE-NCC-HM-MNT
mnt-by: cnl-maint
created: 2014-06-16T12:37:51Z
last-modified: 2026-04-01T07:06:28Z
source: RIPE # Filtered
%ERROR:201: access denied for 2401:2000:6660:0:0:0:0:13
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% Access from your host has been temporarily denied.
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% This query was served by the RIPE Database Query Service version 1.121.2 (BUSA)