AS1133 University of Twente 🇳🇱 NL
SURF B.V.. Announcing 2 prefixes, seen at the RIS collectors.
IPv4 prefixes
1
65,536 (256 × /24)
IPv6 prefixes
1
1 × /48
Upstreams
5
transit providers observed
Peers
0
settlement-free adjacencies
Downstreams
0
transit customers observed
Customer cone
0
ASes reachable through it
Registry and operator data
- AS number
- AS1133
- Name
- University of Twente
- Organisation
- University of Twente
- Country
- 🇳🇱 NL
- RIR
- RIPENCC
- Allocated
- 1993-09-01
- Network type
- Educational/Research
- Traffic levels
- 10-20Gbps
- Scope
- Regional
- Peering policy
- Open
- Website
- https://www.utwente.nl/en/
- PeeringDB
- net/2531
- Exchanges
- 2
- Facilities
- 1
RPKI coverage of this AS
Its own announcements, validated against the current ROA set
Announced prefixes
2 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 130.89.0.0/16 v4 | RPKI valid | 44 | 3772111031133 | 2026-09-18 |
| 2001:67c:2564::/48 v6 | RPKI valid | 37 | 503041133 | 2026-09-18 |