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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
	79.98.176.0/24	A1 Internet BV
	79.98.177.0/24	A1 Internet BV
	79.98.179.0/24	A1 Internet BV
	91.142.132.0/24	Vera Telecom BV
	213.171.64.0/23	A1 Internet B.V.
	213.171.66.0/23	A1 Internet B.V.
	213.171.67.0/24	A1 Internet B.V.
	213.171.68.0/23	A1 Internet B.V.
	213.171.72.0/24	Effective IT
	213.171.73.0/24	Effective IT
	213.171.74.0/24	A1 Internet BV

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS57866	Fusix Networks B.V.	✔	✘
	AS6424	EDGOO NETWORKS	✔	✘
	AS44854	Arend Brouwer	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS6424	EDGOO NETWORKS	✔	✘
	AS57866	Fusix Networks B.V.	✔	✘
	AS44854	Arend Brouwer	✔	✘
	AS203966	A1 Internet BV	✔	✘
	AS6939	Hurricane Electric LLC	✔	✘
	AS137409	GSL Networks Pty LTD	✔	✘
	AS5405	Inter.link GmbH	✔	✘
	AS34927	iFog GmbH	✔	✘
	AS3399	Obenet AB	✔	✘
	AS34019	Hivane Association	✔	✘
	AS8283	Netwerkvereniging Coloclue	✔	✘
	AS61049	Exascale Ltd	✔	✘
	AS24940	Hetzner Online GmbH	✔	✘
	AS58299	Openfactory GmbH	✔	✘
	AS25091	IP-Max SA	✔	✘
	AS6204	INTERKVM HOST SRL	✔	✘
	AS9136	WOBCOM GmbH	✔	✘
	AS50629	LWLcom GmbH	✔	✘
	AS52025	ParadoxNetworks Limited	✔	✘
	AS8298	IPng Networks GmbH	✔	✘
	AS49544	i3D.net B.V	✔	✘
	AS213576	Robert Weir	✔	✘
	AS21263	TeleData GmbH	✔	✘
	AS207176	OPENFIBER B.V.	✔	✘
	AS64289	Macarne.com	✔	✘
	AS60144	3W Infra B.V.	✔	✘
	AS209823	Enki Multimedia EURL	✔	✘
	AS212477	RoyaleHosting B.V.	✔	✘
	AS200132	Peter-Paul Maria Kurstjens	✔	✘
	AS211623	NAML B.V.	✔	✘
	AS214809	Jere Kiitola trading as Stocade	✔	✘
	AS41051	Freetransit Project (Openfactory GmbH)	✔	✘
	AS209267	Velorum B.V.	✔	✘
	AS211588	Innovation Harbor B.V.	✔	✘
	AS47272	HYEHOST LLC	✔	✘
	AS207994	Blockchain Creek B.V.	✔	✘
	AS212635	Jurrian van Iersel	✔	✘
	AS51088	A2B IP B.V.	✔	✘
	AS213052	Bram Wittendorp trading as BittenBytes	✔	✘
	AS207487	Gustav Caplan	✔	✘
	AS1103	SURF B.V.	✔	✘
	AS48925	VibeGAMES B.V.	✔	✘
	AS21485	IP Excess AB	✔	✘
	AS199752	Go-Trex Holding BV	✔	✘
	AS41666	Institute for Pyrotechnical Cleaning (limited company)	✔	✘
	AS215680	Luc Haaijer trading as Ferox Hosting	✔	✘
	AS50869	Free-IX Remote Peering	✔	✘
	AS57344	Telehouse EAD	✔	✘
	AS49127	Asimo Networks B.V.	✔	✘
	AS199524	Gcore S.A.	✔	✘
	AS16909	imput	✔	✘
	AS212855	Jelle Luteijn	✔	✘
	AS199414	Noah Kolossa	✔	✘
	AS21473	PFALZKOM GmbH	✔	✘
	AS8801	Rocket Fibre Ltd	✔	✘
	AS216107	Noah van der Aa trading as Frumentum Media	✔	✘
	AS54148	Dynamic Quantum Networks	✔	✘
	AS205329	Kai-Jung Chen	✔	✘
	AS211024	Jack O'Sullivan	✔	✘
	AS31477	Duocast B.V.	✔	✘
	AS8315	Accenture B. V.	✔	✘
	AS210732	Alexandre FERNANDES (VUAFGROUP SAS)	✔	✘
	AS57758	CBWS Holding B.V.	✔	✘
	AS49600	NEAR IP, S.L.	✔	✘
	AS213622	Falcon FZE LLC	✔	✘
	AS38965	Rick van der Sterren trading as HostIn	✔	✘
	AS215296	Raoul Brouns	✔	✘
	AS32590	Valve Corporation	✔	✘
	AS216333	NetDev UG (haftungsbeschraenkt)	✔	✘
	AS215605	Shams Hanna trading as InformatiQ	✔	✘
	AS215887	Serhiy Bobrov	✔	✘
	AS48011	Turunc Smart Bilgisayar Teknoloji Ve Dis Ticaret Limi...	✔	✘
	AS24482	SG.GS	✔	✘
	AS12859	BIT BV	✔	✘
	AS136557	Host Universal Pty Ltd	✔	✘
	AS11967	Hop179 LLC	✔	✘
	AS39122	Blacknight Internet Solutions Limited	✔	✘
	AS46427	SF Innovations Inc.	✔	✘
	AS3214	xTom GmbH	✔	✘
	AS39326	Syntura Group Limited	✔	✘
	AS31500	Global Network Management Inc	✔	✘
	AS20495	We Dare B.V.	✔	✘
	AS44066	firstcolo GmbH	✔	✘
	AS61029	DODW Holding B.V.	✔	✘
	AS214380	Tim de Boer trading as tim427.net	✔	✘
	AS215248	Bastiaan Mathijs Brink	✔	✘
	AS42093	InterRacks B.V.	✔	✘
	AS39351	31173 Services AB	✔	✘
	AS58075	X2com BV	✔	✘
	AS202585	Nick Bouwhuis	✔	✘
	AS55285	Serverside.com	✔	✘
	AS15169	Google LLC	✔	✘
	AS6206	Netrouting B.V.	✔	✘

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Downstreams

	ASN	Description	IPv4	IPv6
	AS203966	A1 Internet BV	✔	✘

aut-num:        AS211251
as-name:        A1-DC
org:            ORG-BoLB1-RIPE
import:         from AS57866 accept ANY
export:         to AS57866 announce AS211251:AS-DOWNSTREAMS
import:         from AS6424 accept ANY
export:         to AS6424 announce AS211251:AS-DOWNSTREAMS
import:         from AS44854 accept ANY
export:         to AS44854 announce AS211251:AS-DOWNSTREAMS
admin-c:        DUMY-RIPE
tech-c:         DUMY-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         A1-LIR-MNT
created:        2021-05-28T08:57:35Z
last-modified:  2024-10-09T15:31:15Z
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-BoLB1-RIPE
org-name:       A1 Internet BV
country:        NL
org-type:       LIR
address:        Dummy address for ORG-BoLB1-RIPE
# Email removed, Log into bgp.tools to see whois emails
abuse-c:        AR16125-RIPE
mnt-ref:        A1-LIR-MNT
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         A1-LIR-MNT
created:        2004-04-17T11:39:53Z
last-modified:  2021-05-26T07:22:09Z
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: 2025-12-22T03:25:17Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RIPE	as44854:as-eritap	10
RIPE	as-retn-actual-v4	12187
RIPE	as211251:as-downstreams	2
RIPE	as6424:as-downstreams	1849
RIPE	as-edgoo	2534
RIPE	as211251:as-a1-transit	2
ARIN	as1239:as-customers	4238
RIPE	as51088:as-tmnl-ixp-peers	2917
RIPE	as-transroute-spec	19683