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	Prefix	Description
	31.11.56.0/23	BT DCS Niewegein Data Centre
	78.109.0.0/24	BT DCS Hempoint Data Centre
	78.109.0.0/20	British Telecommunications PLC
	78.109.5.0/24	BT DCS Amsterdam International Data Centre
	78.109.6.0/24	BT Global Services DCS Hempoint Data Centre
	78.109.7.0/24	BT DCS BT DCS Hempoint Data Centre
	78.109.9.0/24	BT Dual Site Internet
	78.109.10.0/24	BT DCS Amsterdam International Data Centre
	78.109.11.0/24	BT DCS Amsterdam International Data Centre
	137.213.239.0/24	Sopra Steria Limited
	137.213.252.0/23	Sopra Steria Limited
	217.140.0.0/20	British Telecommunications PLC
	217.140.12.0/22	British Telecommunications PLC
	217.140.12.0/24	BT Global Services DCS Hempoint Data Centre
	217.140.13.0/24	British Telecommunications PLC
	217.140.32.0/19	British Telecommunications PLC

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS5400	British Telecommunications (International)	✔	✘
	AS2856	British Telecommunications	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS5400	British Telecommunications (International)	✔	✘
	AS2856	British Telecommunications	✔	✘

aut-num:        AS13205
as-name:        UNSPECIFIED
descr:          BTWWIDC-H Autonomous System
descr:          BT Global Services DCS WorldWide Internet Data Centre
descr:          Amsterdam
org:            ORG-BT4-RIPE
import:         from AS5400 action pref=100; accept ANY
import:         from AS2855 action pref=90; accept ANY
import:         from AS9335 action pref=100; accept ANY
import:         from AS4295 action pref=100; accept ANY
import:         from AS12541 action pref=100; accept ANY
export:         to AS5400 announce AS13205
export:         to AS2855 announce AS13205
export:         to AS9335 announce AS13205
export:         to AS4295 announce AS13205
export:         to AS12541 announce AS13205
default:        to AS2855 action pref=90; networks ANY
admin-c:        DUMY-RIPE
tech-c:         DUMY-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         ICH-MNT
created:        1970-01-01T00:00:00Z
last-modified:  2017-11-15T09:15:51Z
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-BT4-RIPE
org-name:       British Telecommunications PLC
country:        GB
org-type:       LIR
address:        Dummy address for ORG-BT4-RIPE
# Email removed, Log into bgp.tools to see whois emails/phone numbers
mnt-ref:        BTENT-MNT
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         BTENT-MNT
abuse-c:        BTCR3-RIPE
created:        2004-04-17T12:11:54Z
last-modified:  2026-05-13T07:30:31Z
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: 2026-06-09T03:23:42Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RIPE	as-btgb-cust	259
RIPE	as-bt-nl	33
LEVEL3	as-level3-origins-eu	0
RIPE	as-btigscustes	134
RIPE	as-bttel6	19