Home ASN LookupAS197307

AS197307 bnet-internet_cz Core4Net, s.r.o.

🇨🇿

Org handle: ORG-CS455-RIPE

RIPE NCCallocated

Announced Prefixes (BGP)

4total

3 IPv41 IPv6

IPv4 Addresses

Allocated (RIR)5,376

Announced (BGP)5,376

IPv6 Addresses

Allocated (RIR)7.9×10²⁸

Announced (BGP)7.9×10²⁸

Prefix Limit (IPv4)

Prefix Limit (IPv6)

Country

🇨🇿 CZ

RIR

RIPE NCC

Status

allocated

Allocated

2010-10-11

Announced Prefixes

(BGP)4

Prefix	RPKI	IRR	Last Seen
79.142.144.0/20	Valid	RIPE	2026-10-11
185.51.28.0/22	Valid	RIPE	2026-10-11
185.180.1.0/24	Valid	RIPE	2026-10-11
2a02:24c0::/32	Valid	RIPE	2026-10-11

Allocated Prefixes

(RIR)4

Prefix	Country	RIR	Status
79.142.144.0/20	🇨🇿 CZ	RIPENCC	allocated
185.51.28.0/22	🇨🇿 CZ	RIPENCC	allocated
185.180.1.0/24	🇨🇿 CZ	RIPE	assigned
2a02:24c0::/32	🇨🇿 CZ	RIPENCC	allocated

All 4 announced prefixes of AS197307 →

BGP Neighbours

(seen in AS paths)

Upstreams (2)

Networks AS197307 hands its own prefixes to: transit providers, or peers at an exchange.

AS39392SuperNetwork SH.Cz S.R.O3
AS16019VODAFONE CZ Vodafone Czech Republic A.S1

Transfer History

Registry transfers of AS197307 between organisations.

AS197307Transfer · 2017-01-12
Jiri Strohalm PE
RIPE NCC
→
Core4Net, s.r.o.
RIPE NCC

Date	Resource	From	To	Type
2017-01-12	AS197307	Jiri Strohalm PE RIPE NCC	Core4Net, s.r.o. RIPE NCC	Transfer

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 AS197307 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/197307

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

curl -s "https://api.ipctl.io/v1/asn/197307" | jq