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	Prefix	Description
	217.28.80.0/21	FIBER Networks customers
	2a02:28a8::/32	FIBER Network s.r.o.

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS49025	PRO-ZETA a.s.	✔	✔
	AS51400	SPOJE.NET s.r.o.	✘	✔

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Peers

	ASN	Description	IPv4	IPv6
	AS49025	PRO-ZETA a.s.	✔	✔
	AS51400	SPOJE.NET s.r.o.	✔	✔
	AS42000	Futruy s.r.o.	✔	✔
	AS6939	Hurricane Electric LLC	✔	✘
	AS8218	Zayo Europe	✔	✔
	AS6204	INTERKVM HOST SRL	✔	✔
	AS24940	Hetzner Online GmbH	✔	✔
	AS22356	Durand do Brasil Ltda	✔	✘
	AS1764	Next Layer Telecommunications	✔	✔
	AS49544	i3D.net B.V	✔	✔
	AS14840	BR.DIGITAL	✔	✘
	AS42739	Hawe Telekom S.A. in Restructuring	✔	✔
	AS24482	SG.GS	✔	✔
	AS49121	Infinity Telecom, s.r.o.	✔	✔
	AS51184	Fonira Telekom GmbH	✔	✔
	AS2852	CESNET z.s.p.o.	✔	✔
	AS32590	Valve Corporation	✔	✔
	AS40994	Alwyzon (Hohl IT)	✔	✔
	AS50698	TETA s.r.o.	✔	✔
	AS199524	Gcore S.A.	✔	✔
	AS42473	Anexia Cloud Solutions GmbH	✔	✔
	AS31117	ENERGOTEL a.s.	✔	✔
	AS53062	ALT | GRUPO BRASIL TECPAR	✔	✘
	AS21430	WIA spol. s.r.o.	✔	✘
	AS36236	NetActuate, Inc	✔	✔
	AS34170	Aztelekom LLC	✔	✘
	AS47200	NIX.CZ Route Servers	✘	✔
	AS4455	IX Reach Ltd	✔	✘
	AS6663	Türk Telekom International	✔	✘
	AS44306	OMONIA d.o.o.	✔	✘
	AS263444	Open X Tecnologia Ltda	✔	✘
	AS29049	Delta Telecom Ltd	✔	✘
	AS132337	Axclusive	✔	✘
	AS199081	Lancom Ltd.	✔	✘

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Downstreams

	ASN	Description	IPv4	IPv6
	AS42000	Futruy s.r.o.	✘	✔
	AS51400	SPOJE.NET s.r.o.	✘	✔

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:        DUMY-RIPE
tech-c:         DUMY-RIPE
status:         ASSIGNED
notify:         lukas@prozeta.cz
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
remarks:        ****************************
remarks:        * THIS OBJECT IS MODIFIED
remarks:        * Please note that all data that is generally regarded as personal
remarks:        * data has been removed from this object.
remarks:        * To view the original object, please query the RIPE Database at:
remarks:        * http://www.ripe.net/whois
remarks:        ****************************


organisation:   ORG-FNs4-RIPE
org-name:       FIBER Network s.r.o.
country:        CZ
org-type:       LIR
address:        Dummy address for ORG-FNs4-RIPE
# Email removed, Log into bgp.tools to see whois emails/phone numbers
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
remarks:        ****************************
remarks:        * THIS OBJECT IS MODIFIED
remarks:        * Please note that all data that is generally regarded as personal
remarks:        * data has been removed from this object.
remarks:        * To view the original object, please query the RIPE Database at:
remarks:        * http://www.ripe.net/whois
remarks:        ****************************

Last Update: 2026-06-05T03:26:15Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RIPE	as-spojenet	5
RIPE	as-nano-set	2
RIPE	as-fibernet-set	5
RIPE	as62298:as-peers	8
RADB	as-hurricanev6	21127