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If you are scraping this block for the prefixes that a AS originates, please use the data dumps in https://bgp.tools/kb/api and cache them

	Prefix	Description
	45.66.232.0/23	Open Circle AG
	45.66.234.0/23	Open Circle AG
	185.134.164.0/24	Open Circle AG - DC1
	185.134.164.0/23	Open Circle AG
	185.134.165.0/24	Open Circle AG - DC1
	185.134.166.0/24	Open Circle AG - DC2
	185.134.166.0/23	Open Circle AG
	185.134.167.0/24	Open Circle AG - DC2
	2a00:b0a0::/29	Open Circle AG
	2a00:b0a0:1::/48	Open Circle AG - DC1
	2a00:b0a0:2::/48	Open Circle AG - DC2
	2a00:b0a1::/32	Open Circle AG
	2a00:b0a2::/32	Open Circle AG

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS59414	cloudscale.ch AG	✔	✔
	AS15576	NTS workspace AG	✔	✔
	AS39040	NTS workspace AG	✔	✔
	AS58115	SwissIX Internet Exchange	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS59414	cloudscale.ch AG	✔	✔
	AS15576	NTS workspace AG	✔	✔
	AS39040	NTS workspace AG	✔	✔
	AS6939	Hurricane Electric LLC	✔	✔
	AS5405	Inter.link GmbH	✔	✔
	AS9002	RETN Limited	✘	✔
	AS58299	Openfactory GmbH	✔	✔
	AS24961	WIIT AG (fka. myLoc Managed IT AG)	✔	✔
	AS34019	Hivane Association	✔	✔
	AS34927	iFog GmbH	✔	✔
	AS25091	IP-Max SA	✔	✔
	AS8218	Zayo Europe	✔	✔
	AS8298	IPng Networks GmbH	✔	✔
	AS47147	Anexia Cloud Solutions GmbH	✔	✘
	AS49544	i3D.net B.V	✔	✔
	AS209823	Enki Multimedia EURL	✔	✔
	AS33891	Core-Backbone GmbH	✔	✘
	AS13030	Init7 (Switzerland) Ltd.	✔	✔
	AS58115	SwissIX Internet Exchange	✔	✔
	AS1764	Next Layer Telecommunications	✔	✔
	AS8283	Netwerkvereniging Coloclue	✔	✘
	AS39351	31173 Services AB	✔	✔
	AS56987	ABACLOUDA SAS	✔	✔
	AS25581	GMG AG	✔	✘
	AS57777	Jeroen Massar	✔	✔
	AS44854	Arend Brouwer	✔	✔
	AS48362	Stadtwerke Feldkirch	✔	✔
	AS4601	Antonios A. Chariton	✔	✔
	AS58057	Securebit AG	✔	✔
	AS29075	IELO-LIAZO SERVICES SAS	✔	✔
	AS24482	SG.GS	✔	✔
	AS34309	Link11 GmbH	✔	✘
	AS13237	euNetworks GmbH	✔	✘
	AS25369	Hydra Communications Ltd	✔	✘
	AS202032	GOLINE SA	✔	✘
	AS31736	senseLAN GmbH	✔	✘
	AS12307	Sandro Bolliger trading as Bolliger Network Solutions	✔	✔
	AS49121	Infinity Telecom, s.r.o.	✔	✔
	AS36236	NetActuate, Inc	✔	✔
	AS1836	green.ch AG	✔	✔
	AS4455	IX Reach Ltd	✔	✘
	AS198385	AlpineDC SA	✔	✘
	AS61423	JMP Technology Services GmbH	✔	✘
	AS9299	PLDT (Philippine Long Distance Telephone Company)	✔	✘
	AS8758	Iway AG	✔	✘
	AS48971	DATAWIRE AG	✔	✘
	AS57304	RETN Russia	✘	✔
	AS9009	M247 Europe SRL	✔	✘
	AS21215	UNITED GROUP NETWORK INFRASTRUCTURE d.o.o. Beograd	✔	✘
	AS559	SWITCH	✘	✔
	AS15830	Equinix, Inc.	✔	✘

aut-num:        AS203434
as-name:        OPEN-CIRCLE
remarks:
remarks:        ==========================================
remarks:        TRANSIT
remarks:        ==========================================
remarks:
remarks:        AS15576 is NTS
import:         from AS15576 accept ANY
export:         to AS15576 announce AS203434
mp-import:      afi ipv6.unicast from AS15576 accept ANY
mp-export:      afi ipv6.unicast to AS15576 announce AS203434
remarks:
remarks:        AS29691 is NINE
import:         from AS29691 accept ANY
export:         to AS29691 announce AS203434
mp-import:      afi ipv6.unicast from AS29691 accept ANY
mp-export:      afi ipv6.unicast to AS29691 announce AS203434
remarks:
remarks:        AS59414 is CLOUDSCALE
import:         from AS59414 accept ANY
export:         to AS59414 announce AS203434
mp-import:      afi ipv6.unicast from AS59414 accept ANY
mp-export:      afi ipv6.unicast to AS59414 announce AS203434
remarks:
remarks:        AS39040 is NTS
import:         from AS39040 accept ANY
export:         to AS39040 announce AS203434
mp-import:      afi ipv6.unicast from AS39040 accept ANY
mp-export:      afi ipv6.unicast to AS39040 announce AS203434
remarks:
remarks:        AS42476 is SWISSIX
import:         from AS42476 accept ANY
export:         to AS42476 announce AS203434
mp-import:      afi ipv6.unicast from AS42476 accept ANY
mp-export:      afi ipv6.unicast to AS42476 announce AS203434
remarks:
admin-c:        DUMY-RIPE
tech-c:         DUMY-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         YOUNGSOLUTIONS-MNT
mnt-by:         OPEN-CIRCLE-MNT
org:            ORG-YSA7-RIPE
created:        2016-01-19T13:59:06Z
last-modified:  2025-11-06T09:04:34Z
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-YSA7-RIPE
org-name:       Open Circle AG
country:        CH
org-type:       LIR
address:        Dummy address for ORG-YSA7-RIPE
# Email removed, Log into bgp.tools to see whois emails
abuse-c:        YSAC-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        OPEN-CIRCLE-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         OPEN-CIRCLE-MNT
created:        2016-01-14T13:59:42Z
last-modified:  2022-09-23T13:55:17Z
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: 2025-12-22T03:25:01Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RIPE	as39040:as-customer	23
ARIN	as1239:as-customers	4238
RIPE	as15576:as-customer:as203434	1
RIPE	as15576:as-customer	48
RIPE	as42476:as-swissix-connected	244
RADB	as-hurricanev6	20185
RIPE	as-youngsolutions	1
RIPE	as203434:as-opencircle	1
RIPE	as-cloudscale	7