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	Prefix	Description
	217.23.224.0/20	PROVIDER

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS786	Jisc Services Limited	✔	✘
	AS5089	Virgin Media Limited	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS786	Jisc Services Limited	✔	✘
	AS5089	Virgin Media Limited	✔	✘

aut-num:        AS15770
as-name:        DERWENTSIDE
org:            ORG-DDC1-RIPE
import:         from AS5462 action pref=100; accept ANY
import:         from AS786 action pref=100; accept ANY
import:         from AS2856 action pref=100; accept ANY
export:         to AS5462 announce AS15770
export:         to AS786 announce AS15770
export:         to AS2856 announce AS15770
remarks:
remarks:        *************************************
remarks:        Report abuse to lir-abuse@durham.gov.uk
remarks:        *************************************
remarks:
admin-c:        DUMY-RIPE
tech-c:         DUMY-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         DERWENTSIDE-MNT
notify:         lir-notify@durham.gov.uk
created:        1970-01-01T00:00:00Z
last-modified:  2023-07-25T08:06:41Z
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-DDC1-RIPE
org-name:       Durham County Council
country:        GB
org-type:       LIR
address:        Dummy address for ORG-DDC1-RIPE
# Email removed, Log into bgp.tools to see whois emails/phone numbers
abuse-c:        AR17597-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        DERWENTSIDE-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         DERWENTSIDE-MNT
created:        2004-04-17T12:13:20Z
last-modified:  2026-04-29T05:22:53Z
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: 2026-05-06T03:23:39Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RIPE	as-ntli	188
ALTDB	as51202:as-all	5418
RIPE	as-janetus	59
RIPE	as-janetplus	59
RIPE	as-janeteuro	62
RIPE	as-cableinet	68