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	Prefix	Description
	193.42.153.0/24	ALSTOR A. Zwierzynski i Wspolnicy Sp. z o.o.

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS5617	Orange Polska Spolka Akcyjna	✔	✘
	AS12741	Netia SA	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS5617	Orange Polska Spolka Akcyjna	✔	✘
	AS12741	Netia SA	✔	✘

aut-num:        AS48021
as-name:        ALSTOR-AS
org:            ORG-AS91-RIPE
import:         from AS5617 action pref=100; accept ANY
export:         to AS5617 announce AS48021
import:         from AS12968 action pref=100; accept ANY
export:         to AS12968 announce AS48021
admin-c:        DUMY-RIPE
tech-c:         DUMY-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         ALSTOR-MNT
created:        2008-10-01T09:30:00Z
last-modified:  2023-06-21T09:17:00Z
source:         RIPE
sponsoring-org: ORG-GCI2-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-AS91-RIPE
org-name:       ALSTOR A. Zwierzynski i Wspolnicy Sp. z o.o.
country:        PL
org-type:       OTHER
address:        Dummy address for ORG-AS91-RIPE
# Email removed, Log into bgp.tools to see whois emails/phone numbers
abuse-c:        AR24682-RIPE
mnt-ref:        NETIA-MNT
mnt-by:         NETIA-MNT
mnt-by:         ALSTOR-MNT
created:        2008-08-27T13:51:25Z
last-modified:  2026-05-13T05:44:28Z
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:        ****************************

Last Update: 2026-06-09T03:23:54Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RIPE	as-netia	1081
RIPE	as5617:as-world-transit	2967
RIPE	as5617:as-pl	2028