AS1133 University of Twente 🇳🇱 NL

SURF B.V.. Announcing 2 prefixes, seen at the RIS collectors.

IPv4 prefixes

65,536 (256 × /24)

IPv6 prefixes

1 × /48

Upstreams

transit providers observed

Peers

settlement-free adjacencies

Downstreams

transit customers observed

Customer cone

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

2 valid (100.0%) 0 invalid (0.0%) 0 no ROA (0.0%)

Whois

Fetched from whois.ripe.net

as-block:       AS1101 - AS1200
descr:          RIPE NCC ASN block
remarks:        These AS Numbers are assigned to network operators in the RIPE NCC service region.
mnt-by:         RIPE-NCC-HM-MNT
created:        2018-11-22T15:27:09Z
last-modified:  2018-11-22T15:27:09Z
source:         RIPE

aut-num:        AS1133
as-name:        UTWENTE-AS
descr:          University Twente
descr:          Drienerlolaan 5
descr:          P.O. Box 217
descr:          NL - 7500 AE Enschede
admin-c:        Ins20-RIPE
tech-c:         Ins20-RIPE
status:         LEGACY
mnt-by:         SN-LIR-MNT
created:        2002-08-21T16:06:37Z
last-modified:  2017-06-12T14:47:02Z
source:         RIPE
mnt-by:         RIPE-NCC-LEGACY-MNT
org:            ORG-Sb3-RIPE

organisation:   ORG-Sb3-RIPE
org-name:       SURF B.V.
country:        NL
reg-nr:         50277375
org-type:       LIR
address:        P.O. Box 19035
address:        3501 DA
address:        Utrecht
address:        NETHERLANDS
phone:          +31887873000
admin-c:        HT3384-RIPE
admin-c:        MK512-RIPE
admin-c:        SNS1-RIPE
admin-c:        WB311-RIPE
admin-c:        NO17-RIPE
admin-c:        RS957-RIPE
admin-c:        JO5863-RIPE
admin-c:        MM57501-RIPE
abuse-c:        SNS1-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        SN-LIR-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         SN-LIR-MNT
created:        2004-04-17T11:43:29Z
last-modified:  2026-05-13T07:28:31Z
source:         RIPE # Filtered

role:           ITBE network services
address:        P.O. Box 217
address:        NL - 7500 AE Enschede
address:        The Netherlands
remarks:        For general abuse like spam use the address
remarks:        abuse@utwente.nl
remarks:        For security related contacts use the address
remarks:        security@utwente.nl
phone:          +31 53 489 2311
admin-c:        Ins21-RIPE
tech-c:         Ins21-RIPE
nic-hdl:        Ins20-RIPE
mnt-by:         SN-LIR-MNT
created:        2003-11-13T15:29:05Z
last-modified:  2003-11-14T11:21:33Z
source:         RIPE # Filtered