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AS218867 Syz

China SYZ-AS RIPE 0 IPv4 prefixes 4 IPv6 prefixes
IPv4 addresses
0
IPv6 /48 networks
1,048,576
RPKI
0 valid4 no ROA
Peers and downstreams
1

Holder

AS name
SYZ-AS
Description
Sun Youzhi
Organisation
Sun Youzhi
Registered in
Hefei, China
Abuse contact
ahut031677@gmail.com
Assigned
2026-08-24
Registered
2026-08-25
Record last changed
2026-09-01 14:41 UTC
None announced.

Network health

Grade D ยท 55/100
fail Prefixes covered by valid ROAs
0 of 4 announced prefixes are RPKI valid, 4 have no ROA.		 0/25
pass No RPKI invalid announcements
None of the announcements is RPKI invalid.		 10/10
pass Announces IPv6
4 IPv6 prefixes.		 15/15
fail More than one upstream
No upstream seen (it may be a peering-only or transit network).		 0/10
pass Working abuse contact
ahut031677@gmail.com is published.		 15/15
fail Publishes a geofeed
No geofeed found. Without one, location databases have to guess.		 0/10
pass No prefixes smaller than /24 or /48
All prefixes are /24 (IPv4) or /48 (IPv6) or larger.		 10/10
pass Registry record maintained
Last changed 2026-09-01.		 5/5
Built from the announced prefixes, RPKI, the registry record and geofeeds. Checks without data are not counted. Also in the API.
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Routing changes

Last 30 days
No changes recorded in the last 30 days. Changes are recorded each time the routing data of this AS is refreshed. Get alerts in real time.

WHOIS

aut-num:        AS218867
as-name:        SYZ-AS
org:            ORG-SY75-RIPE
sponsoring-org: ORG-NDIT1-RIPE
admin-c:        SY1814-RIPE
tech-c:         SY1814-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         NBDHM-MNT
mnt-by:         YZS-MNT
created:        2026-08-25T13:49:35Z
last-modified:  2026-09-01T14:41:16Z
source:         RIPE
% 8 routing policy lines (import/export) not shown