Data as of Nov 8, 2026

37.123.104.0/21

No anonymizer space · no proxy exits in 30 days

SysEleven GmbH

Announcement

this exact prefix

RPKI valid

Announced by

AS25291

Type

Hosting

Announcements

More specific

Announcements inside

Prefix	Origin	Type	Holder
37.123.106.0/24 since Jul 2026	AS25291	Hosting	SysEleven GmbH
37.123.108.0/24 since Jul 2026	AS25291	Hosting	SysEleven GmbH
37.123.109.0/24 since Jul 2026	AS25291	Hosting	SysEleven GmbH

Registrations in this block

The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.

Range	Addresses	Netname	Holder	Type	Created	Abuse contact
37.123.104.0/21	2,048	DE-SYSELEVEN-20120215	SysEleven GmbH (ORG-SG57-RIPE) · DE	ALLOCATED PA	Aug 15, 2019	ripe-abuse@syseleven.de
└ 37.123.105.0/31	2	INFRA-TRANSFER-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 24, 2019	ripe-abuse@syseleven.de
└ 37.123.105.2/31	2	INFRA-MGMT-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 22, 2021	ripe-abuse@syseleven.de
└ 37.123.105.4/30	4	INFRA-MGMT-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 23, 2019	ripe-abuse@syseleven.de
└ 37.123.105.8/29	8	INFRA-SERVICE-APP-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	May 14, 2021	ripe-abuse@syseleven.de
└ 37.123.105.16/28	16	CUST-ACCESS-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Oct 15, 2021	ripe-abuse@syseleven.de
└ 37.123.105.32/28	16	INFRA-SERVICE-APP-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 23, 2019	ripe-abuse@syseleven.de
└ 37.123.105.48/28	16	INFRA-ROUTING-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 23, 2019	ripe-abuse@syseleven.de
└ 37.123.105.64/29	8	INFRA-SERVICE-APP-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 23, 2019	ripe-abuse@syseleven.de
└ 37.123.105.72/29	8	INFRA-SERVICE-APP-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 23, 2019	ripe-abuse@syseleven.de
└ 37.123.105.80/28	16	INFRA-SERVICE-APP-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 23, 2019	ripe-abuse@syseleven.de
└ 37.123.105.96/29	8	INFRA-MGMT-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 23, 2019	ripe-abuse@syseleven.de
└ 37.123.105.104/29	8	CUST-TRANSFER-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 23, 2019	ripe-abuse@syseleven.de
└ 37.123.105.112/31	2	INFRA-TRANSFER-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 24, 2019	ripe-abuse@syseleven.de
└ 37.123.105.114/31	2	INFRA-TRANSFER-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 24, 2019	ripe-abuse@syseleven.de
└ 37.123.105.116/31	2	INFRA-SERVICE-APP-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 24, 2019	ripe-abuse@syseleven.de
└ 37.123.105.118/31	2	CUST-TRANSFER-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 24, 2019	ripe-abuse@syseleven.de
└ 37.123.105.120/29	8	CUST-ACCESS-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	May 10, 2021	ripe-abuse@syseleven.de
└ 37.123.105.128/28	16	INFRA-SERVICE-APP-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 23, 2019	ripe-abuse@syseleven.de
└ 37.123.105.144/28	16	INFRA-SERVICE-APP-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 23, 2019	ripe-abuse@syseleven.de
└ 37.123.105.160/29	8	INFRA-SERVICE-APP-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 23, 2019	ripe-abuse@syseleven.de
└ 37.123.105.168/29	8	CUST-ACCESS-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 23, 2019	ripe-abuse@syseleven.de
└ 37.123.105.176/28	16	INFRA-SERVICE-APP-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 23, 2019	ripe-abuse@syseleven.de
└ 37.123.105.192/27	32	INFRA-SERVICE-APP-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 23, 2019	ripe-abuse@syseleven.de
└ 37.123.105.224/27	32	INFRA-SERVICE-APP-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 23, 2019	ripe-abuse@syseleven.de
└ 37.123.106.0/28	16	INFRA-MGMT-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jun 16, 2021	ripe-abuse@syseleven.de
└ 37.123.106.16/28	16	INFRA-MGMT-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 23, 2019	ripe-abuse@syseleven.de
└ 37.123.106.32/31	2	CUST-TRANSFER-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 24, 2019	ripe-abuse@syseleven.de
└ 37.123.106.40/29	8	CUST-ACCESS-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Dec 6, 2021	ripe-abuse@syseleven.de
└ 37.123.106.48/29	8	INFRA-SERVICE-APP-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 23, 2019	ripe-abuse@syseleven.de
└ 37.123.106.56/29	8	INFRA-SERVICE-APP-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 23, 2019	ripe-abuse@syseleven.de
└ 37.123.106.72/29	8	INFRA-SERVICE-APP-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 23, 2019	ripe-abuse@syseleven.de
└ 37.123.106.96/27	32	CLOUD-MANAGED-GLOBAL-POOL	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 23, 2019	ripe-abuse@syseleven.de
└ 37.123.106.128/28	16	CUST-ACCESS-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 23, 2019	ripe-abuse@syseleven.de
└ 37.123.106.160/28	16	CLOUD-IAAS-GLOBAL-POOL	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jan 3, 2021	ripe-abuse@syseleven.de
└ 37.123.106.176/29	8	CUST-ACCESS-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 23, 2019	ripe-abuse@syseleven.de
└ 37.123.106.184/31	2	INFRA-TRANSFER-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 25, 2019	ripe-abuse@syseleven.de
└ 37.123.106.186/31	2	INFRA-TRANSFER-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 25, 2019	ripe-abuse@syseleven.de
└ 37.123.106.188/31	2	INFRA-TRANSFER-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 25, 2019	ripe-abuse@syseleven.de
└ 37.123.106.190/31	2	INFRA-MGMT-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 25, 2019	ripe-abuse@syseleven.de
└ 37.123.106.192/28	16	INFRA-MGMT-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 23, 2019	ripe-abuse@syseleven.de
└ 37.123.106.208/29	8	CUST-ACCESS-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 23, 2019	ripe-abuse@syseleven.de
└ 37.123.106.216/29	8	CUST-TRANSFER-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 23, 2019	ripe-abuse@syseleven.de
└ 37.123.106.224/29	8	CLOUD-IAAS-GLOBAL-POOL	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 23, 2019	ripe-abuse@syseleven.de
└ 37.123.106.232/29	8	CUST-ACCESS-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Dec 6, 2021	ripe-abuse@syseleven.de
└ 37.123.106.248/29	8	CUST-ACCESS-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 23, 2019	ripe-abuse@syseleven.de
└ 37.123.107.0/24	256	CLOUD-MANAGED-GLOBAL-POOL	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 23, 2019	ripe-abuse@syseleven.de
└ 37.123.108.0/27	32	INFRA-SERVICE-APP-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Nov 20, 2019	ripe-abuse@syseleven.de
└ 37.123.108.32/27	32	CUST-ACCESS-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Dec 4, 2019	ripe-abuse@syseleven.de
└ 37.123.108.64/27	32	CLOUD-IAAS-GLOBAL-POOL	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jun 21, 2021	ripe-abuse@syseleven.de
└ 37.123.108.96/28	16	CUST-ACCESS-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Apr 23, 2021	ripe-abuse@syseleven.de
└ 37.123.108.112/28	16	CUST-ACCESS-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Apr 23, 2021	ripe-abuse@syseleven.de
└ 37.123.108.128/26	64	CUST-ACCESS-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Aug 5, 2021	ripe-abuse@syseleven.de
└ 37.123.108.192/27	32	CUST-ACCESS-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Aug 5, 2021	ripe-abuse@syseleven.de
└ 37.123.108.224/27	32	INFRA-MGMT-NET	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Oct 18, 2021	ripe-abuse@syseleven.de
└ 37.123.109.0/24	256	CLOUD-MANAGED-GLOBAL-POOL	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 23, 2019	ripe-abuse@syseleven.de
└ 37.123.110.0/24	256	CLOUD-MANAGED-GLOBAL-POOL	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Aug 8, 2019	ripe-abuse@syseleven.de
└ 37.123.111.0/24	256	CLOUD-MANAGED-GLOBAL-POOL	SysEleven GmbH (ORG-SG57-RIPE) · DE	ASSIGNED PA	Jul 22, 2019	ripe-abuse@syseleven.de

Network & registry

Announcement Routing history RPKI & IRR Whois & abuse

Origin network

AS25291

Name: SysEleven GmbH
Type: Hosting
Registered: Dec 7, 2009
Domain: secunet.cloud
Website: www.secunet.cloud
Spamhaus ASN-DROP: not listed

RPKI

Route origin authorizations

ROA prefix	ASN	Max len	Anchor	Verdict
37.123.104.0/21	AS25291	/24	RIPE	RPKI valid

IRR

Route objects on the exact prefix

Origin	Registry	Description	Maintainer	Modified
AS25291	RIPE	SysEleven Global Network - Aggregate route object	SYS11-MNT	Jul 30, 2019

IRR inside

Route objects inside

Prefix	Origin	Registry	Description	Maintainer	Modified
37.123.104.0/24	AS25291	RIPE	SysEleven Global Network - More specific route object	SYS11-MNT	Jul 30, 2019
37.123.105.0/24	AS25291	RIPE	SysEleven Global Network - More specific route object	SYS11-MNT	Jul 30, 2019
37.123.107.0/24	AS25291	RIPE	SysEleven Global Network - More specific route object	SYS11-MNT	Jul 30, 2019
37.123.110.0/24	AS25291	RIPE	SysEleven Global Network - More specific route object	SYS11-MNT	Jul 30, 2019
37.123.111.0/24	AS25291	RIPE	SysEleven Global Network - More specific route object	SYS11-MNT	Jul 30, 2019

37.123.104.0/21

Announcements

Announcements inside

Registrations in this block

Network & registry

AS25291

Who has announced this prefix

Routing history

Route origin authorizations

Route objects on the exact prefix

Route objects inside

Registration for this announcement

Abuse contact