211251 A1-DC, NL
Adjacency: 4 Upstream: 3 Downstream: 1
Upstream Adjacent AS list
AS6424 EDGOO NETWORKS, PT
AS6939 HURRICANE, US
AS57866 FUSIX-AS, NL
Downstream Adjacent AS list
AS203966 A1-AS, NL
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 18580 AS211251 ORG+TRN Originate: 3840 /20.09 Transit: 512 /23.00 A1-DC, NL
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 % 11353 AS211251 A1-DC, NL 12 7 3 8 4 33.33% Prefix AS Path Aggregation Suggestion 79.98.176.0/23 6939 211251 + Announce - aggregate of 79.98.176.0/24 (6939 211251) and 79.98.177.0/24 (6939 211251) 79.98.176.0/24 6939 211251 - Withdrawn - aggregated with 79.98.177.0/24 (6939 211251) 79.98.177.0/24 6939 211251 - Withdrawn - aggregated with 79.98.176.0/24 (6939 211251) 79.98.179.0/24 6939 211251 91.142.132.0/24 6939 211251 213.171.64.0/22 6939 211251 + Announce - aggregate of 213.171.64.0/23 (6939 211251) and 213.171.66.0/23 (6939 211251) 213.171.64.0/23 6939 211251 - Withdrawn - aggregated with 213.171.66.0/23 (6939 211251) 213.171.66.0/23 6939 211251 - Withdrawn - aggregated with 213.171.64.0/23 (6939 211251) 213.171.67.0/24 6939 211251 - Withdrawn - matching aggregate 213.171.66.0/23 6939 211251 213.171.68.0/23 6939 211251 213.171.72.0/23 6939 211251 + Announce - aggregate of 213.171.72.0/24 (6939 211251) and 213.171.73.0/24 (6939 211251) 213.171.72.0/24 6939 211251 - Withdrawn - aggregated with 213.171.73.0/24 (6939 211251) 213.171.73.0/24 6939 211251 - Withdrawn - aggregated with 213.171.72.0/24 (6939 211251) 213.171.74.0/24 6939 211251 213.171.75.0/24 57866 211251
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS211251 8 More Specifics 10 Total Advertisements A1-DC, NL
79.98.176.0/24 79.98.176.0/22
79.98.179.0/24 79.98.176.0/22
213.171.64.0/23 213.171.64.0/19
213.171.66.0/23 213.171.64.0/19
213.171.67.0/24 213.171.64.0/19
213.171.68.0/23 213.171.64.0/19
213.171.74.0/24 213.171.64.0/19
213.171.75.0/24 213.171.64.0/19
213.171.72.0/23 213.171.64.0/19
Prefixes added and withdrawn by this origin AS in the past 7 days.
- 213.171.72.0/23 Withdrawn
whois: 402590
IANA has recorded AS211251 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS211251\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 'AS208189 - AS214345'
as-block: AS208189 - AS214345
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: 2026-02-12T14:40:05Z
last-modified: 2026-02-12T14:40:05Z
source: RIPE
% Information related to 'AS211251'
% Abuse contact for 'AS211251' is 'harry@a1.nl'
aut-num: AS211251
as-name: A1-DC
org: ORG-BoLB1-RIPE
import: from AS57866 accept ANY
export: to AS57866 announce AS211251:AS-DOWNSTREAMS
import: from AS6424 accept ANY
export: to AS6424 announce AS211251:AS-DOWNSTREAMS
import: from AS44854 accept ANY
export: to AS44854 announce AS211251:AS-DOWNSTREAMS
admin-c: JJ4842-RIPE
tech-c: jj4842-RIPE
status: ASSIGNED
mnt-by: RIPE-NCC-END-MNT
mnt-by: A1-LIR-MNT
created: 2021-05-28T08:57:35Z
last-modified: 2024-10-09T15:31:15Z
source: RIPE
organisation: ORG-BoLB1-RIPE
org-name: A1 Internet BV
country: NL
reg-nr: 06055421
org-type: LIR
address: Abelenstra Boulevard 52-10
address: 8448JB
address: Heerenveen
address: NETHERLANDS
phone: +31 513 646493
fax-no: +31 513 744052
abuse-c: AR16125-RIPE
admin-c: JJ4842-RIPE
admin-c: MK3766-RIPE
mnt-ref: A1-LIR-MNT
mnt-ref: RIPE-NCC-HM-MNT
mnt-by: RIPE-NCC-HM-MNT
mnt-by: A1-LIR-MNT
created: 2004-04-17T11:39:53Z
last-modified: 2026-05-13T07:22:36Z
source: RIPE # Filtered
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