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	Prefix	Description
	38.125.107.0/24	Cogent Communications, LLC
	62.41.2.0/24	Castor
	62.41.10.0/24	Castor Broadcasting B.V.
	62.41.20.0/24	Castor Broadcasting B.V.
	62.41.21.0/24	Castor Broadcasting B.V.
	62.41.59.0/24	Castor Broadcasting B.V.
	62.41.60.0/24	Castor Broadcasting B.V.
	81.23.240.0/23	Castor Communications BV
	92.71.10.0/24	Castor Broadcasting
	92.71.11.0/24	Castor Broadcasting
	92.71.15.0/24	Castor Broadcasting
	92.71.16.0/24	Castor Broadcasting
	92.71.19.0/24	GTT Communications Inc.
	92.71.20.0/24	GTT Communications Inc.
	92.71.22.0/24	Castor Broadcasting
	185.6.108.0/24	Castor Holding B.V.
	185.6.109.0/24	Castor Holding B.V.
	185.6.110.0/24	Castor Holding B.V.
	185.6.111.0/24	Castor Communications BV

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS3257	GTT Communications Inc.	✔	✘
	AS174	Cogent Communications, LLC	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS3257	GTT Communications Inc.	✔	✘
	AS174	Cogent Communications, LLC	✔	✘
	AS8928	GTT Communications Inc.	✔	✘
	AS1239	Sprint Wireline (Cogent)	✔	✘

aut-num:        AS61429
as-name:        AS-CASTOR
abuse-c:        AR54144-RIPE
org:            ORG-CHB2-RIPE
import:         from AS286 accept any
import:         from AS6939 accept any
import:         from AS24730 accept any
export:         to AS286 announce AS61429
export:         to AS-ANY announce AS61429:AS-ALL
export:         to AS6939 announce AS61429
export:         to AS24730 announce AS61429
admin-c:        DUMY-RIPE
tech-c:         DUMY-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         castor-mnt
created:        2012-10-12T12:04:33Z
last-modified:  2025-08-12T13:53:57Z
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-CHB2-RIPE
org-name:       Castor Communications BV
country:        NL
org-type:       LIR
address:        Dummy address for ORG-CHB2-RIPE
# Email removed, Log into bgp.tools to see whois emails/phone numbers
abuse-c:        AR54144-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        castor-mnt
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         castor-mnt
created:        2012-10-08T12:36:26Z
last-modified:  2026-05-13T07:34:29Z
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: 2026-06-13T03:24:02Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RIPE	as-gttcust	91770
ALTDB	as-jarmtelco	651
RIPE	as-castor	1
APNIC	as-63529-as-import-as6939	39020
RIPE	as61429:as-all	1
RIPE	as-netholding	20
RIPE	as-kpn	49547