AS204013 NRB Network Research Belgium S.A.

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

IPv4 addresses6,14415 prefixes · <0.001% of announced IPv4

Rank in Belgium#45largest network in BE by IPv4 space, of 273 · 0.06% of BE

Rank worldwide#12,244of 79,396 networks with IPv4

IPv61 x /32 (65,536 x /48)1 prefixes

CountryBelgium294 ASNs registered there

Open AS204013 in ASN lookup Look up an IP in this network (217.117.33.1) All networks in Belgium

IPv4 prefixes

All 15 prefixes, in address order.

217.117.33.0/24
217.117.35.0/24
217.117.36.0/24
217.117.40.0/23
217.117.42.0/23
217.117.44.0/23
217.117.46.0/24
217.117.47.0/24
217.117.48.0/23
217.117.51.0/24
217.117.52.0/22
217.117.57.0/24
217.117.58.0/23
217.117.60.0/23
217.117.62.0/24

IPv6 prefixes

All 1 prefix.

2a02:7100::/32

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AS15953#46 AS_KBCGS_CEDC KBC GLOBAL SERVICES NV6,144

AS207730#47 ASsappiAT Sappi Europe S.A.6,144

AS59943#48 LEVEL27-AS Level 27 BVBA5,376

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