25572 ISC-MAD1 ISC, Madrid, Spain
Adjacency: 1 Upstream: 1 Downstream: 0
Upstream Adjacent AS list
AS4589 EASYNET Easynet Group Plc
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 21721 AS25572 ORIGIN Originate: 256 /24.00 Transit: 0 /0.00 ISC-MAD1 ISC, Madrid, Spain
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 % 15942 AS25572 ISC-MAD1 ISC, Madrid, Spain 1 0 0 1 0 0.00% Prefix AS Path Aggregation Suggestion 217.75.241.0/24 4637 4589 25572
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS25572 1 More Specifics 1 Total Advertisements ISC-MAD1 ISC, Madrid, Spain
217.75.241.0/24 217.75.240.0/20
whois: 402332
IANA has recorded AS25572 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS25572\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 'AS25569 - AS25575'
as-block: AS25569 - AS25575
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: 2018-11-22T15:27:31Z
last-modified: 2018-11-22T15:27:31Z
source: RIPE
% Information related to 'AS25572'
% Abuse contact for 'AS25572' is 'abuse@isc.org'
aut-num: AS25572
as-name: ISC-MAD1
org: ORG-ISCI1-RIPE
remarks: This ASN is used by ISC for management of the F-Root
remarks: nameserver.
remarks: Use AS25572:AS-SET if you filter based on AS-SETs.
remarks: If you wish to peer with ISC, please see our information at
remarks: http://www.isc.org/community/peering/
remarks: Please see http://f.root-servers.org/ for more information.
remarks: The server is operated by ISC, http://www.isc.org/.
remarks: Trouble reports should be sent to noc@isc.org which opens a
remarks: ticket. Emergency via telephone, +1 650 423 1310.
remarks: Abuse reports to abuse@isc.org.
admin-c: IAC75-RIPE
tech-c: IAC75-RIPE
status: ASSIGNED
mnt-by: RIPE-NCC-END-MNT
mnt-by: MAINT-ISC
created: 2003-01-14T15:52:41Z
last-modified: 2020-03-26T16:59:50Z
source: RIPE # Filtered
organisation: ORG-ISCI1-RIPE
org-name: Internet Systems Consortium Inc.
country: US
org-type: LIR
address: PO Box 360
address: 03857
address: Newmarket
address: UNITED STATES
phone: +16504231310
fax-no: +16504231355
reg-nr: 3618975 (Delaware)
mnt-ref: RIPE-NCC-HM-MNT
mnt-ref: MAINT-ISC
mnt-by: RIPE-NCC-HM-MNT
mnt-by: MAINT-ISC
abuse-c: IAC75-RIPE
created: 2013-06-26T11:49:26Z
last-modified: 2026-04-29T05:34:09Z
source: RIPE # Filtered
role: ISC Abuse Contacts
address: Internet Systems Consortium
address: PO Box 360
address: Newmarket
address: NH 03857
address: United States of America
nic-hdl: IAC75-RIPE
abuse-mailbox: abuse@isc.org
mnt-by: MAINT-ISC
created: 2016-10-26T06:33:45Z
last-modified: 2021-09-28T10:00:05Z
source: RIPE # Filtered
% This query was served by the RIPE Database Query Service version 1.122 (ABERDEEN)