Autonomous System
AS204013 Network Research Belgium S.A.
BusinessActiveBelgiumRIPE
AS204013 (NRB) is a business network operated by Network Research Belgium S.A. in Belgium, registered with RIPE. It has 18 IPv4 prefixes with 20,224 addresses and 2 IPv6 prefixes, which makes it the 6,854th largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses20,224in 18 prefixes
IPv6 prefixes2≈ 7.9 × 10²⁸ addresses
Size rank#6,854of 82,200 active ASNs
Details
OrganizationNetwork Research Belgium S.A.
AS nameNRB
Websitenrb.be
Country Belgium (BE)
Network typeBusiness
RegistryRIPE
Abuse contactripe-tech@nrb.be
Registered2025-11-05
Last updated2026-04-21
IPv4 prefixes
18 prefixes · 20,224 addresses| Network | Addresses | First – last address |
|---|---|---|
| 217.117.32.0/19 | 8,192 | 217.117.32.0 – 217.117.63.255 |
| 217.117.32.0/20 | 4,096 | 217.117.32.0 – 217.117.47.255 |
| 217.117.48.0/20 | 4,096 | 217.117.48.0 – 217.117.63.255 |
| 217.117.32.0/24 | 256 | 217.117.32.0 – 217.117.32.255 |
| 217.117.34.0/24 | 256 | 217.117.34.0 – 217.117.34.255 |
| 217.117.36.0/24 | 256 | 217.117.36.0 – 217.117.36.255 |
| 217.117.37.0/24 | 256 | 217.117.37.0 – 217.117.37.255 |
| 217.117.38.0/24 | 256 | 217.117.38.0 – 217.117.38.255 |
| 217.117.39.0/24 | 256 | 217.117.39.0 – 217.117.39.255 |
| 217.117.40.0/24 | 256 | 217.117.40.0 – 217.117.40.255 |
| 217.117.41.0/24 | 256 | 217.117.41.0 – 217.117.41.255 |
| 217.117.43.0/24 | 256 | 217.117.43.0 – 217.117.43.255 |
| 217.117.44.0/24 | 256 | 217.117.44.0 – 217.117.44.255 |
| 217.117.46.0/24 | 256 | 217.117.46.0 – 217.117.46.255 |
| 217.117.50.0/24 | 256 | 217.117.50.0 – 217.117.50.255 |
| 217.117.56.0/24 | 256 | 217.117.56.0 – 217.117.56.255 |
| 217.117.61.0/24 | 256 | 217.117.61.0 – 217.117.61.255 |
| 217.117.63.0/24 | 256 | 217.117.63.0 – 217.117.63.255 |
217.117.32.0/19 217.117.32.0/20 217.117.48.0/20 217.117.32.0/24 217.117.34.0/24 217.117.36.0/24 217.117.37.0/24 217.117.38.0/24 217.117.39.0/24 217.117.40.0/24 217.117.41.0/24 217.117.43.0/24 217.117.44.0/24 217.117.46.0/24 217.117.50.0/24 217.117.56.0/24 217.117.61.0/24 217.117.63.0/24
IPv6 prefixes
2 prefixes- 2a02:7100::/32
- 2a02:7100:ffff::/48
2a02:7100::/32 2a02:7100:ffff::/48
Query AS204013 with the API
The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day.
curl "https://api.ipapi.is/?q=AS204013&key=YOUR_API_KEY"Any address in its prefixes resolves to AS204013, with or without a key:
curl "https://api.ipapi.is/?q=217.117.32.1"