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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description
	AS6830	Liberty Global Europe Holding B.V.

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Peers

	ASN	Description
	AS6830	Liberty Global Europe Holding B.V.

inetnum:        145.8.0.0 - 145.8.255.255
netname:        TATASTEEL
org:            ORG-TSIB1-RIPE
descr:          Tata Steel IJmuiden BV
descr:          Visit: Wenckebachstraat 1, 1951 JZ Velsen-Noord
descr:          Post: P.O.Box 10.000, 1970 CA IJmuiden
country:        NL
admin-c:        DUMY-RIPE
tech-c:         DUMY-RIPE
status:         LEGACY
mnt-by:         RIPE-NCC-LEGACY-MNT
mnt-by:         lir-nl-tatasteel-1-MNT
mnt-routes:     INFONETNL-MNT ANY
mnt-routes:     ZIGGO-RTRMGMT { 145.8.180.0/24 }
mnt-by:         HH92443-MNT
notify:         david.marasco@tatasteeleurope.com
notify:         it-ip-beheer@tatasteeleurope.com
created:        1970-01-01T00:00:00Z
last-modified:  2022-05-20T08:53:28Z
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-TSIB1-RIPE
org-name:       Tata Steel IJmuiden B.V.
country:        NL
org-type:       LIR
address:        Dummy address for ORG-TSIB1-RIPE
# Email removed, Log into bgp.tools to see whois emails/phone numbers
abuse-c:        AR68371-RIPE
mnt-ref:        lir-nl-tatasteel-1-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         lir-nl-tatasteel-1-MNT
created:        2022-05-19T09:17:51Z
last-modified:  2026-05-13T07:42:52Z
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: 2026-06-05T03:26:25Z UTC

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IRR Databases

IRR	Expected ASN
ripe	AS33915	Show Raw route: 145.8.180.0/24 descr: IPT_TATASTEEL origin: AS33915 notify: ripe-mnt@vodafoneziggo.com mnt-by: TNF-MNT mnt-by: ZIGGO-RTRMGMT created: 2018-05-22T08:30:43Z last-modified: 2025-10-20T12:59:24Z 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: ****************************

RPKI Chain (Current origin: Valid)