AS12942 NRB-AS Network Research Belgium S.A.

NRB-AS Network Research Belgium S.A. · registered in Belgium

IPv4 addresses2,0487 prefixes · <0.001% of announced IPv4

Rank in Belgium#81largest network in BE by IPv4 space, of 273 · 0.02% of BE

Rank worldwide#22,834of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryBelgium294 ASNs registered there

Open AS12942 in ASN lookup Look up an IP in this network (217.117.32.1) All networks in Belgium

IPv4 prefixes

All 7 prefixes, in address order.

217.117.32.0/24
217.117.34.0/24
217.117.37.0/24
217.117.38.0/23
217.117.50.0/24
217.117.56.0/24
217.117.63.0/24

Similar-sized networks in Belgium

ASNNameIPv4 addresses

AS201050#78 QBONE-NET S103 BVBA2,048

AS31511#79 B-RAIL-BE-AS Infrabel NV2,048

AS48260#80 TELEWEB TELEWEB bvba2,048

AS21373#82 NBB-AS Banque Nationale de Belgique2,048

AS35350#83 AS_SCHWARZ_PHARMA_AG UCB Pharma S.A.2,048

AS35593#84 UNIWEB-AS UniWeb bvba2,048

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources