Data as of Nov 5, 2026

37.139.136.0/21

No anonymizer space · no proxy exits in 30 days

Fusix Networks B.V.

Announcement

this exact prefix

RPKI valid

Announced by

Type

Internet provider

Risk

0 / 100 · Low

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
37.139.136.0/21	2,048	NL-FUSIX1-20120228	Fusix Networks B.V. (ORG-FNB7-RIPE) · NL	ALLOCATED PA	Aug 22, 2019	abuse@fusix.nl
└ 37.139.138.0/24	256	FUSIX-NETWORKS-CUST-1012-01	Subnet for Fusix Networks customer 1012.	ASSIGNED PA	Jan 21, 2013	abuse@fusix.nl via NL-FUSIX1-20120228
└ 37.139.139.0/29	8	FUSIX-NETWORKS-INFRA-01	Fusix Networks router loopbacks	ASSIGNED PA	Jul 16, 2012	abuse@fusix.nl via NL-FUSIX1-20120228
└ 37.139.139.32/27	32	FUSIX-NETWORKS-INFRA-01	Fusix Networks servers in Telecity 1	ASSIGNED PA	Sep 6, 2012	abuse@fusix.nl via NL-FUSIX1-20120228
└ 37.139.139.136/29	8	FUSIX-NETWORKS-INFRA-01	Fusix Networks servers in Telecity1	ASSIGNED PA	Aug 21, 2012	abuse@fusix.nl via NL-FUSIX1-20120228
└ 37.139.139.144/29	8	FUSIX-NETWORKS-BGP-CUSTS-01	Fusix Networks BGP customers	ASSIGNED PA	Aug 21, 2012	abuse@fusix.nl via NL-FUSIX1-20120228
└ 37.139.139.152/30	4	FUSIX-NETWORKS-OOB-CUSTS-01	Fusix Networks customers in Telecity 1	ASSIGNED PA	Sep 27, 2012	abuse@fusix.nl via NL-FUSIX1-20120228
└ 37.139.139.240/28	16	FUSIX-NETWORKS-INFRA-01	Fusix Networks router PtP links	ASSIGNED PA	Jul 16, 2012	abuse@fusix.nl via NL-FUSIX1-20120228

A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.

Origin network

RPKI

ROA prefix	ASN	Max len	Anchor	Verdict
37.139.136.0/21	AS57866	/21	RIPE	RPKI valid

IRR

Origin	Registry	Description	Maintainer	Modified
AS57866	RIPE	Fusix Networks IPv4 route	FUSIX-MNT	Feb 28, 2012