AS203993 S.J.M. Steffann 🇳🇱 NL
Announcing 8 prefixes, seen at the RIS collectors.
IPv4 prefixes
4
1,280 (5 × /24)
IPv6 prefixes
4
1 × /32
Upstreams
2
transit providers observed
Peers
7
settlement-free adjacencies
Downstreams
1
transit customers observed
Customer cone
2
ASes reachable through it
Registry and operator data
- AS number
- AS203993
- Name
- S.J.M. Steffann
- Organisation
- Global NOG Alliance
- Country
- 🇳🇱 NL
- RIR
- RIPENCC
- Allocated
- 2015-09-16
- Network type
- Educational/Research
- Traffic levels
- 100-1000Mbps
- Scope
- Europe
- Peering policy
- Open
- IRR as-set
- AS203993:AS-ALL
- Website
- https://www.steffann.nl/
- PeeringDB
- net/12946
- Exchanges
- 1
- Facilities
- 1
RPKI coverage of this AS
Its own announcements, validated against the current ROA set
Announced prefixes
8 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 67.221.252.0/24 v4 | RPKI valid | 12 | 202365203993 | 2026-09-18 |
| 67.221.253.0/24 v4 | RPKI valid | 12 | 202365203993 | 2026-09-18 |
| 67.221.255.0/24 v4 | RPKI valid | 12 | 202365203993 | 2026-09-18 |
| 185.54.92.0/23 v4 | RPKI valid | 43 | 202365203993 | 2026-09-18 |
| 2607:fae0:f001::/48 v6 | RPKI valid | 12 | 24482203993 | 2026-09-18 |
| 2607:fae0:f00c::/48 v6 | RPKI valid | 12 | 24482203993 | 2026-09-18 |
| 2607:fae0:f00d::/48 v6 | RPKI valid | 12 | 24482203993 | 2026-09-18 |
| 2a00:8642::/32 v6 | RPKI valid | 32 | 24482203993 | 2026-09-18 |