SURF B.V.
AS1133 is SURF B.V. (utwente.nl). It announces 65,536 IPv4 addresses in 1 prefixes, and 1 IPv6 prefixes.
The Netherlands· RIPE· allocated 1993-09-01· education
Where its space is
The IPv4 it announces that IP Geolocation places, by country. A /24 counts for the AS announcing most of it.
- The Netherlands65,536 · 100.00%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- UTWENTE-AS
- name
- SURF B.V.
- org
- ORG-Sb3-RIPE
- org name
- SURF B.V.
- org address
- P.O. Box 19035, 3501 DA, Utrecht, NETHERLANDS
- org country
- NL
- country
- NL
- source
- ripe
- status
- LEGACY
- created
- 2002-08-21
- updated
- 2017-06-12
- descr
- University Twente / Drienerlolaan 5 / P.O. Box 217 / NL - 7500 AE Enschede
- maintainer
- SN-LIR-MNT|RIPE-NCC-LEGACY-MNT
- abuse name
- SURF Network Maintainer
- abuse email
- cert@surfcert.nl
- abuse phone
- +31 88 7873000
- abuse kind
- role
What the databases see
Addresses each address-keyed database holds in the IPv4 it announces, as a share of that space, with its largest providers. Counts overlap.
- VPN IP62draytek, watchguard0.09%
- anyip, dataimpulse, floppydata0.01%
- None here
- None here
- 0.01%
- None here
- Hosting IP3,8405.86%
- None here
- None here
- None here
- SSH IP1660.25%
- SMTP IP170.03%
- 0.04%
IPv4 prefixes
Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 130.89.0.0/16 | The Netherlands | valid | 19 | 2026-10-02 |
IPv6 prefixes
Every IPv6 prefix BGP Route saw it announce.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 2001:67c:2564::/48 | The Netherlands | valid | 20 | 2026-10-02 |
Test the real build first.
An evaluation license puts a full current build in your hands — every row, every column, no sampling — so you can measure it against your own traffic before anyone talks about terms.