205311 CAMBRIDGE_FIBRE_NETWORKS, GB
Adjacency: 1 Upstream: 1 Downstream: 0
Upstream Adjacent AS list
AS35826 NETSERVERS-AS, GB
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 34185 AS205311 ORIGIN Originate: 1280 /21.68 Transit: 0 /0.00 CAMBRIDGE_FIBRE_NETWORKS, 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 % 63615 AS205311 CAMBRIDGE_FIBRE_NETWORKS, GB 2 0 0 2 0 0.00% Prefix AS Path Aggregation Suggestion 185.219.108.0/22 2914 35826 205311 185.229.51.0/24 6939 35826 205311
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS205311 2 More Specifics 3 Total Advertisements CAMBRIDGE_FIBRE_NETWORKS, GB
185.219.108.0/23 185.219.108.0/22
185.219.110.0/23 185.219.108.0/22
whois: 402603
IANA has recorded AS205311 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS205311\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 'AS203940 - AS205662'
as-block: AS203940 - AS205662
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 'AS205311'
% Abuse contact for 'AS205311' is 'abuse@cfn.ltd'
aut-num: AS205311
as-name: Cambridge_Fibre_Networks
org: ORG-CFNL1-RIPE
import: from AS35826 accept ANY
export: to AS35826 announce AS205311
import: from AS8330 accept AS-LONAP
export: to AS8330 announce AS205311
admin-c: CFN7-RIPE
tech-c: CFN7-RIPE
status: ASSIGNED
mnt-by: RIPE-NCC-END-MNT
mnt-by: uk-cfn-1-mnt
created: 2017-09-25T14:45:30Z
last-modified: 2019-07-03T13:55:30Z
source: RIPE
organisation: ORG-CFNL1-RIPE
org-name: Cambridge Fibre Networks Ltd.
country: GB
reg-nr: 10542520
org-type: LIR
address: 21 Signet Court
address: CB5 8LA
address: Cambridge
address: UNITED KINGDOM
phone: +44 1223 800085
admin-c: JM19237-RIPE
tech-c: JM19237-RIPE
abuse-c: AR42860-RIPE
mnt-ref: uk-cfn-1-mnt
mnt-by: RIPE-NCC-HM-MNT
mnt-by: uk-cfn-1-mnt
created: 2017-08-31T09:09:55Z
last-modified: 2026-05-13T07:09:14Z
source: RIPE # Filtered
role: CFN - Network Operations
address: 21 Signet Court
address: Cambridge
address: CB5 8LA
address: United Kingdom
nic-hdl: CFN7-RIPE
admin-c: BRSM2-RIPE
admin-c: JM19237-RIPE
tech-c: BRSM2-RIPE
tech-c: JM19237-RIPE
abuse-mailbox: abuse@cfn.ltd
mnt-by: uk-cfn-1-mnt
created: 2017-09-22T15:49:09Z
last-modified: 2017-09-22T15:49:09Z
source: RIPE # Filtered
% This query was served by the RIPE Database Query Service version 1.122.1 (SHETLAND)