What is ASN AS197307?

ASN AS197307 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS197307?

AS197307 is listed under Core4Net, s.r.o..

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS197307 Core4Net, s.r.o. | IPGeolocation.io

ASN Lookup Tool

Core4Net, s.r.o. core4net.cz

CZ 4 Routes

AS Data

AS197307

AS197307 – Core4Net, s.r.o.

AS Number	197307
AS Name	bnet-internet_cz
Organization	Core4Net, s.r.o. (org-cs455-ripe)
Country	CZ
Website	core4net.cz
Number of IPv4 Routes	3
Number of IPv6 Routes	1
ASN type	BUSINESS
Allocation Status	ASSIGNED
Registry	RIPE
Date Allocated	2010-10-11

ASN Intelligence API for production workflows

Use ASN data for AS197307 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

Access complete peers, upstreams, downstreams, routes, WHOIS, and contact intelligence via our API. Learn more

Get ASN API Key ASN API Docs

IP Ranges

Route	Origin	Origin Name	ISP	# IPs
185.51.28.0/22	AS197307	Core4Net, s.r.o.	BNET Business, s.r.o.	1024
79.142.144.0/20	AS197307	Core4Net, s.r.o.	HRANEX s.r.o.	4096
2a02:24c0::/32	AS197307	Core4Net, s.r.o.	BNET Business, s.r.o.	~79×10²⁷
185.180.1.0/24	AS197307	Core4Net, s.r.o.	Wlanet system s.r.o.	256

Raw Whois Response

% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See https://docs.db.ripe.net/terms-conditions.html

% Note: this output has been filtered.
%       To receive output for a database update, use the "-B" flag.

% Information related to 'AS196608 - AS197840'

as-block:       AS196608 - AS197840
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:        2024-09-04T14:04:38Z
last-modified:  2024-09-04T14:04:38Z
source:         RIPE

% Information related to 'AS197307'

% Abuse contact for 'AS197307' is 'abuse@core4net.cz'

aut-num:        AS197307
as-name:        bnet-internet_cz
org:            ORG-CS455-RIPE
import:         from AS16019 accept ANY
import:         from AS6881 accept ANY
import:         from AS47200 accept ANY
import:         from AS112 accept ANY
import:         from AS39392 accept ANY
import:         from AS61195 accept ANY
import:         from AS32934 accept ANY
import:         from AS714 accept ANY
import:         from AS51331 accept ANY
export:         to AS16019 announce AS197307
export:         to AS6881 announce AS197307
export:         to AS47200 announce AS197307
export:         to AS112 announce AS197307
export:         to AS39392 announce AS197307
export:         to AS61195 announce AS197307
export:         to AS32934 announce AS197307
export:         to AS714 announce AS197307
export:         to AS51331 announce AS197307
admin-c:        BBSH1-RIPE
tech-c:         BBSH1-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         cz-core4net-1-mnt
created:        2010-10-11T13:16:03Z
last-modified:  2024-06-12T08:48:59Z
source:         RIPE

organisation:   ORG-CS455-RIPE
org-name:       Core4Net, s.r.o.
country:        CZ
org-type:       LIR
address:        Nakladni 3002/2
address:        74601
address:        Opava
address:        CZECH REPUBLIC
phone:          +420773665080
admin-c:        JS18824-RIPE
admin-c:        DP13521-RIPE
tech-c:         JB16720-RIPE
tech-c:         DP13521-RIPE
abuse-c:        AR38476-RIPE
mnt-ref:        cz-core4net-1-mnt
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         cz-core4net-1-mnt
created:        2016-11-28T16:16:35Z
last-modified:  2020-12-16T13:28:22Z
source:         RIPE # Filtered

role:           BNET Business, s.r.o. Hostmaster
address:        Nakladni 3002/2
address:        74601
address:        Opava
address:        CZECH REPUBLIC
phone:          +420777665080
org:            ORG-BBS15-RIPE
admin-c:        JS8896-RIPE
tech-c:         JS8896-RIPE
tech-c:         JK13894-RIPE
tech-c:         JB16720-RIPE
tech-c:         OC2464-RIPE
nic-hdl:        BBSH1-RIPE
abuse-mailbox:  abuse@bnet-internet.cz
mnt-by:         cz-core4net-1-mnt
created:        2018-07-17T06:46:15Z
last-modified:  2018-07-31T07:42:16Z
source:         RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.121.2 (ABERDEEN)

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.ripe.net",
  "as_blocks" : [ {
    "as_block" : "AS196608 - AS197840",
    "description" : [ "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" ],
    "date_created" : "2024-09-04",
    "date_updated" : "2024-09-04",
    "source" : "RIPE"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS197307",
    "as_name" : "bnet-internet_cz",
    "status" : "ASSIGNED",
    "import" : [ "from AS16019 accept ANY", "from AS6881 accept ANY", "from AS47200 accept ANY", "from AS112 accept ANY", "from AS39392 accept ANY", "from AS61195 accept ANY", "from AS32934 accept ANY", "from AS714 accept ANY", "from AS51331 accept ANY" ],
    "export" : [ "to AS16019 announce AS197307", "to AS6881 announce AS197307", "to AS47200 announce AS197307", "to AS112 announce AS197307", "to AS39392 announce AS197307", "to AS61195 announce AS197307", "to AS32934 announce AS197307", "to AS714 announce AS197307", "to AS51331 announce AS197307" ],
    "organization" : "ORG-CS455-RIPE",
    "admin_contacts" : [ "BBSH1-RIPE" ],
    "tech_contacts" : [ "BBSH1-RIPE" ],
    "mnt_by" : [ "RIPE-NCC-END-MNT", "cz-core4net-1-mnt" ],
    "date_created" : "2010-10-11",
    "date_updated" : "2024-06-12",
    "source" : "RIPE"
  } ],
  "organization" : {
    "handle" : "ORG-CS455-RIPE",
    "name" : "Core4Net, s.r.o.",
    "type" : "LIR",
    "address" : [ "Nakladni 3002/2", "74601", "Opava", "CZECH REPUBLIC" ],
    "street" : "Nakladni",
    "city" : "Opava",
    "zip_code" : "74601",
    "country" : [ "CZ" ],
    "phone" : [ "+420773665080" ],
    "admin_contacts" : [ "JS18824-RIPE", "DP13521-RIPE" ],
    "tech_contacts" : [ "JB16720-RIPE", "DP13521-RIPE" ],
    "abuse_contacts" : [ "AR38476-RIPE" ],
    "mnt_ref" : [ "cz-core4net-1-mnt" ],
    "mnt_by" : [ "RIPE-NCC-HM-MNT", "cz-core4net-1-mnt" ],
    "date_created" : "2016-11-28",
    "date_updated" : "2020-12-16",
    "source" : "RIPE",
    "addressCountry" : "CZECH REPUBLIC"
  },
  "administrative_contacts" : [ {
    "handle" : "BBSH1-RIPE",
    "name" : "BNET Business, s.r.o. Hostmaster",
    "address" : [ "Nakladni 3002/2", "74601", "Opava", "CZECH REPUBLIC" ],
    "street" : "Nakladni",
    "city" : "Opava",
    "zip_code" : "74601",
    "country" : "CZECH REPUBLIC",
    "abuse_mailbox" : [ "abuse@bnet-internet.cz" ],
    "phone" : [ "+420777665080" ],
    "organizations" : [ "ORG-BBS15-RIPE" ],
    "admin_contacts" : [ "JS8896-RIPE" ],
    "tech_contacts" : [ "JS8896-RIPE", "JK13894-RIPE", "JB16720-RIPE", "OC2464-RIPE" ],
    "mnt_by" : [ "cz-core4net-1-mnt" ],
    "date_created" : "2018-07-17",
    "date_updated" : "2018-07-31",
    "source" : "RIPE",
    "addressCountry" : "CZECH REPUBLIC"
  } ],
  "technical_contacts" : [ {
    "handle" : "BBSH1-RIPE",
    "name" : "BNET Business, s.r.o. Hostmaster",
    "address" : [ "Nakladni 3002/2", "74601", "Opava", "CZECH REPUBLIC" ],
    "street" : "Nakladni",
    "city" : "Opava",
    "zip_code" : "74601",
    "country" : "CZECH REPUBLIC",
    "abuse_mailbox" : [ "abuse@bnet-internet.cz" ],
    "phone" : [ "+420777665080" ],
    "organizations" : [ "ORG-BBS15-RIPE" ],
    "admin_contacts" : [ "JS8896-RIPE" ],
    "tech_contacts" : [ "JS8896-RIPE", "JK13894-RIPE", "JB16720-RIPE", "OC2464-RIPE" ],
    "mnt_by" : [ "cz-core4net-1-mnt" ],
    "date_created" : "2018-07-17",
    "date_updated" : "2018-07-31",
    "source" : "RIPE",
    "addressCountry" : "CZECH REPUBLIC"
  } ]
}

Peers

AS Number	Description	Country
AS199081	Lancom Ltd.	GR
AS40994	Hohl IT e.U.	AT
AS6881	NIX.CZ z.s.p.o.	CZ
AS39392	SH.cz s.r.o.	CZ
AS6939	Hurricane Electric LLC	US
AS6204	ZET.NET IP Transit	RO
AS60602	Inovare-Prim SRL	MD
AS22356	Durand do Brasil Ltda	BR
AS9136	Wobcom GmbH	DE
AS47200	NIX.CZ z.s.p.o.	CZ

Upstreams

AS Number	Description	Country
AS39120	Convergenze S.p.A.	IT
AS39392	SH.cz s.r.o.	CZ
AS14840	BR.Digital Telecom	BR
AS1764	Next Layer Telekommunikationsdienstleistungs und Beratungs GmbH	AT
AS263444	Open X Tecnologia Ltda	BR
AS6939	Hurricane Electric LLC	US
AS6204	ZET.NET IP Transit	RO
AS22356	Durand do Brasil Ltda	BR
AS5405	Inter.link GmbH	DE
AS16019	Vodafone Czech Republic a.s.	CZ