Home ASN LookupAS51331

AS51331 ModernTV SychrovNET s.r.o

🇨🇿

Org handle: ORG-SS91-RIPE

RIPE NCCallocated

Announced Prefixes (BGP)

10total

7 IPv43 IPv6

IPv4 Addresses

Allocated (RIR)1,536

Announced (BGP)2,560

IPv6 Addresses

Allocated (RIR)9.2×10²⁶

Announced (BGP)9.2×10²⁶

Prefix Limit (IPv4)

Prefix Limit (IPv6)

Country

🇨🇿 CZ

RIR

RIPE NCC

Status

allocated

Allocated

2018-03-01

Announced Prefixes

(BGP)10

Prefix	RPKI	IRR	Last Seen
188.246.114.0/24	Valid	RIPE	2026-10-11
188.246.115.0/24	Valid	RIPE	2026-10-11
188.246.116.0/22	Valid	RIPE	2026-10-11
188.246.116.0/24	Valid	RIPE	2026-10-11
188.246.117.0/24	Valid	RIPE	2026-10-11
188.246.118.0/24	Valid	RIPE	2026-10-11
188.246.119.0/24	Valid	RIPE	2026-10-11
2a00:c587:fd00::/40	Valid	RIPE	2026-10-11
2a00:c587:fe00::/40	Valid	RIPE	2026-10-11
2a00:c587:ff00::/40	Valid	RIPE	2026-10-11

Allocated Prefixes

(RIR)9

Prefix	Country	RIR	Status
188.246.114.0/24	🇸🇰 SK	RIPE	assigned
188.246.115.0/24	🇨🇿 CZ	RIPE	assigned
188.246.116.0/24	🇨🇿 CZ	RIPE	assigned
188.246.117.0/24	🇨🇿 CZ	RIPE	assigned
188.246.118.0/24	🇨🇿 CZ	RIPE	assigned
188.246.119.0/24	🇨🇿 CZ	RIPE	assigned
2a00:c587:fd00::/40	🇨🇿 CZ	RIPE	assigned
2a00:c587:fe00::/40	🇨🇿 CZ	RIPE	assigned
2a00:c587:ff00::/40	🇨🇿 CZ	RIPE	assigned

All 10 announced prefixes of AS51331 →

BGP Neighbours

(seen in AS paths)

Upstreams (5)

Networks AS51331 hands its own prefixes to: transit providers, or peers at an exchange.

AS25512CDT CD Telematika A.S3
AS42000KAORA Futruy S.R.O3
AS8251NFX ZSPO FreeTel, S.R.O2
AS8778SLOVANET A.S1
AS25248BlueTone RADIOKOMUNIKACE A.S1

Transfer History

Registry transfers of AS51331 between organisations.

AS51331M&A · 2023-09-20
SychrovNET s.r.o
RIPE NCC
→
SychrovNET s.r.o
RIPE NCC

Date	Resource	From	To	Type
2023-09-20	AS51331	SychrovNET s.r.o RIPE NCC	SychrovNET s.r.o RIPE NCC	M&A

ASPA

No ASPA

Abuse Contact

External Links

RIPE Whois RIPEstat

Learn more

What is an ASN?Autonomous systems, ASN ranges and how they are assigned
RPKI and route origin validationWhat the RPKI badges on the prefix list mean
ASPA explainedWhy AS51331 should publish an ASPA object
IPv4 transfers in the RIPE NCC regionMonthly volume and the latest registry transfers
ASN data in AI agents and SIEMMCP server and API integrations

API

Open

GEThttps://api.ipctl.io/v1/asn/51331

Returns ASN details, announced prefixes, and BGP routing data.

curl -s "https://api.ipctl.io/v1/asn/51331" | jq