206208 looking glass

AS51257 CERIZ SASU 🇫🇷 FR

Announcing 3 prefixes, seen at the RIS collectors.

IPv4 prefixes
1
256 (1 × /24)
IPv6 prefixes
2
8 × /32
Upstreams
1
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
AS51257
Name
CERIZ SASU
Organisation
CERIZ SASU
Country
🇫🇷 FR
RIR
RIPENCC
Allocated
2016-01-05
Network type
Enterprise
Traffic levels
100-1000Mbps
Scope
Regional
Peering policy
Open
IRR as-set
AS-CERIZ
Website
http://www.ceriz.fr
PeeringDB
net/12934

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

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

Whois

Fetched from whois.ripe.net

as-block:       AS50893 - AS51311
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:        2024-12-10T14:54:30Z
last-modified:  2024-12-10T14:54:30Z
source:         RIPE

aut-num:        AS51257
as-name:        CERIZ
org:            ORG-CS398-RIPE
import:         from AS29075 accept ANY
export:         to AS29075 announce AS-CERIZ
admin-c:        JN2000-RIPE
tech-c:         JN2000-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         MNT-CERIZ
created:        2016-01-05T10:49:07Z
last-modified:  2024-01-27T11:38:25Z
source:         RIPE

organisation:   ORG-CS398-RIPE
org-name:       CERIZ SASU
country:        FR
reg-nr:         808 558 415  R.CS  PONTOISE
org-type:       LIR
address:        16, rue Amp�re
address:        95300
address:        Pontoise
address:        FRANCE
phone:          +33619312714
admin-c:        JN2000-RIPE
tech-c:         JN2000-RIPE
abuse-c:        AR34863-RIPE
mnt-ref:        MNT-CERIZ
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         MNT-CERIZ
created:        2016-01-04T14:42:36Z
last-modified:  2026-05-13T07:26:27Z
source:         RIPE # Filtered

person:         Nicolle Jerome
address:        Ste. FAIR-TELECOM
address:        10, rue de Penthivi�re
address:        75008 Paris
address:        FRANCE
phone:          +33619312714
remarks:
remarks:        PGPKEY-06A68A1B
nic-hdl:        JN2000-RIPE
mnt-by:         MNT-CERIZ
mnt-by:         FAIR-TELECOM-MNT
created:        2010-02-18T15:51:16Z
last-modified:  2025-12-29T10:01:17Z
source:         RIPE # Filtered