AS203993 S.J.M. Steffann 🇳🇱 NL

Announcing 8 prefixes, seen at the RIS collectors.

IPv4 prefixes

1,280 (5 × /24)

IPv6 prefixes

1 × /32

Upstreams

transit providers observed

Peers

settlement-free adjacencies

Downstreams

transit customers observed

Customer cone

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

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

Whois

Fetched from whois.ripe.net

as-block:       AS203940 - AS205662
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:        2026-03-05T15:29:31Z
last-modified:  2026-03-05T15:29:31Z
source:         RIPE

aut-num:        AS203993
as-name:        GNA-DC1-AS
org:            ORG-SSP3-RIPE
mp-import:      from AS12414 accept ANY
mp-export:      to AS12414 announce AS203993:AS-ALL
mp-import:      from AS50673 accept ANY
mp-export:      to AS50673 announce AS203993:AS-ALL
admin-c:        SJMS-RIPE
tech-c:         SJMS-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         STEFFANN-MNT
created:        2015-09-16T10:51:27Z
last-modified:  2026-06-12T09:59:22Z
source:         RIPE

organisation:   ORG-SSP3-RIPE
org-name:       S.J.M. Steffann
country:        NL
reg-nr:         Not Applicable
org-type:       LIR
address:        Tienwoningenweg 46
address:        7312 DN
address:        Apeldoorn
address:        NETHERLANDS
phone:          +31622660412
mnt-ref:        STEFFANN-MNT
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         STEFFANN-MNT
admin-c:        SJMS-RIPE
abuse-c:        SJMS-RIPE
created:        2012-01-27T14:45:47Z
last-modified:  2026-05-13T07:34:01Z
source:         RIPE # Filtered

role:           SJM Steffann NOC contact
address:        Tienwoningenweg 46
address:        7312 DN Apeldoorn
address:        The Netherlands
admin-c:        SJMS1-RIPE
tech-c:         SJMS1-RIPE
abuse-mailbox:  abuse@steffann.nl
nic-hdl:        SJMS-RIPE
mnt-by:         STEFFANN-MNT
created:        2012-03-06T21:01:48Z
last-modified:  2020-12-15T15:07:54Z
source:         RIPE # Filtered