51800 FIBERNET-ASN, CZ
Adjacency: 2 Upstream: 2 Downstream: 0
Upstream Adjacent AS list
AS6939 HURRICANE, US
AS49025 PROZETA-NET, CZ
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 25610 AS51800 ORIGIN Originate: 2048 /21.00 Transit: 0 /0.00 FIBERNET-ASN, CZ
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 % 47761 AS51800 FIBERNET-ASN, CZ 1 0 0 1 0 0.00% Prefix AS Path Aggregation Suggestion 217.28.80.0/21 6939 51800
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS51800 1 More Specifics 1 Total Advertisements FIBERNET-ASN, CZ
217.28.80.0/21 217.28.80.0/20
whois: 402590
IANA has recorded AS51800 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS51800\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 'AS51357 - AS51817'
as-block: AS51357 - AS51817
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: 2025-02-13T13:57:44Z
last-modified: 2025-02-13T13:57:44Z
source: RIPE
% Information related to 'AS51800'
% Abuse contact for 'AS51800' is 'abuse@fiber.cz'
aut-num: AS51800
as-name: FIBERNET-ASN
org: ORG-FNs4-RIPE
import: from AS48960 action pref=100; accept ANY
import: from AS49025 action pref=50; accept ANY
import: from AS51801 action pref=200; accept ANY
import: from AS198346 action pref=200; accept ANY
import: from AS51400 action pref=200; accept ANY
import: from AS62298 action pref=200; accept ANY
export: to AS48960 announce AS-FIBERNET-SET
export: to AS49025 announce AS-FIBERNET-SET
export: to AS51801 announce AS-FIBERNET-SET
export: to AS198346 announce AS-FIBERNET-SET
export: to AS51400 announce AS-FIBERNET-SET
export: to AS62298 announce AS-FIBERNET-SET
admin-c: JK6086-RIPE
admin-c: LM1397-RIPE
tech-c: JK6086-RIPE
tech-c: LM1397-RIPE
status: ASSIGNED
mnt-by: RIPE-NCC-END-MNT
mnt-by: MNT-FIBERCZ
created: 2010-11-05T15:57:48Z
last-modified: 2020-03-27T09:28:20Z
source: RIPE # Filtered
organisation: ORG-FNs4-RIPE
org-name: FIBER Network s.r.o.
country: CZ
reg-nr: 24733652
org-type: LIR
address: Cimburkova 369/16
address: 130 00
address: Prague 3
address: CZECH REPUBLIC
phone: +420222742742
fax-no: +420222742744
abuse-c: AFBR1
mnt-ref: RIPE-NCC-HM-MNT
mnt-ref: MNT-FIBERCZ
mnt-by: RIPE-NCC-HM-MNT
mnt-by: MNT-FIBERCZ
created: 2010-10-25T13:22:51Z
last-modified: 2026-05-13T07:33:17Z
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 1.122.1 (DEXTER)