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AS51331 SychrovNET s.r.o

Czechia ModernTV RIPE 7 IPv4 prefixes 3 IPv6 prefixes
IPv4 addresses
1,536
IPv6 /48 networks
768
RPKI
10 valid0 no ROA
Peers and downstreams
23

Holder

AS name
ModernTV
Description
SychrovNET s.r.o
Organisation
SychrovNET s.r.o
Registered in
Vsetín, Czechia
Abuse contact
noc@sychrovnet.cz
Assigned
2018-02-28
Registered
2018-03-01
Record last changed
2023-05-23 08:48 UTC

Upstream graph

Upstreams and their upstreams, from BGP paths
AS1299 Arelion Sweden AB AS1299 · SE Arelion Sweden AB AS15685 CASABLANCA INT a.s. AS15685 · CZ CASABLANCA INT a.s. AS174 AS174 AS174 AS174 AS8218 Zayo Infrastructure France SA AS8218 · FR Zayo Infrastructure F… AS6204 TMRC GROUP SRL AS6204 · RO TMRC GROUP SRL AS5578 SWAN, a.s. AS5578 · SK SWAN, a.s. AS39392 SH.cz s.r.o. AS39392 · CZ SH.cz s.r.o. AS31230 Slovak University of Technology in Bratislava AS31230 · SK Slovak University of … AS6663 Euroweb Romania S.R.L. AS6663 · RO Euroweb Romania S.R.L. AS42000 Futruy s.r.o. AS42000 · CZ Futruy s.r.o. AS25248 RADIOKOMUNIKACE a.s. AS25248 · CZ RADIOKOMUNIKACE a.s. AS25512 CD-Telematika a.s. AS25512 · CZ CD-Telematika a.s. AS8778 Slovanet a.s. AS8778 · SK Slovanet a.s. AS8251 FreeTel, s.r.o. AS8251 · CZ FreeTel, s.r.o. AS6939 Hurricane Electric LLC AS6939 · US Hurricane Electric LLC AS51331 SychrovNET s.r.o AS51331 · CZ SychrovNET s.r.o

Network health

Grade B · 85/100
pass Prefixes covered by valid ROAs
10 of 10 announced prefixes are RPKI valid.		 25/25
pass No RPKI invalid announcements
None of the announcements is RPKI invalid.		 10/10
pass Announces IPv6
3 IPv6 prefixes.		 15/15
pass More than one upstream
6 upstreams seen in BGP.		 10/10
pass Working abuse contact
noc@sychrovnet.cz 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
fail Registry record maintained
Last changed 2023-05-23.		 0/5
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
2026-10-04 09:51 UTCRelationship changed AS9498 upstream to peer
2026-10-04 09:51 UTCRelationship changed AS6663 upstream to peer
2026-10-04 09:51 UTCRelationship changed AS6204 upstream to peer
2026-10-04 09:51 UTCRelationship changed AS50629 upstream to peer
2026-10-04 09:51 UTCRelationship changed AS41327 upstream to peer
2026-10-04 09:51 UTCRelationship changed AS264409 upstream to peer
2026-10-04 09:51 UTCRelationship changed AS20562 upstream to peer
2026-10-04 09:51 UTCRelationship changed AS1764 upstream to peer
2026-10-04 09:51 UTCRelationship changed AS14840 upstream to peer

WHOIS

aut-num:        AS51331
as-name:        ModernTV
org:            ORG-SS91-RIPE
admin-c:        IN500-RIPE
tech-c:         IN500-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         SNET-MNT
created:        2018-03-01T12:17:49Z
last-modified:  2023-05-23T08:48:51Z
source:         RIPE
% 49 routing policy lines (import/export) not shown