ASN AS43709 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS43709?

AS43709 is listed under SilesNet 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?

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AS43709 SilesNet s.r.o. | IPGeolocation.io

SilesNet s.r.o. silesnet.net

CZ 14 Routes

AS Data

AS43709

AS43709 – SilesNet s.r.o.

AS Number	43709
AS Name	SILESNET
Organization	SilesNet s.r.o. (org-ss80-ripe)
Country	CZ
Website	silesnet.net
Number of IPv4 Routes	7
Number of IPv6 Routes	7
ASN type	ISP
Allocation Status	ASSIGNED
Registry	RIPE
Date Allocated	2007-09-18

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
2a02:d8a0::/34	AS43709	SilesNet s.r.o.	SilesNet s.r.o.	~20×10²⁷
78.157.168.0/21	AS43709	SilesNet s.r.o.	SilesNet s. r. o.	2048
2a02:d8a0:8000::/34	AS43709	SilesNet s.r.o.	SilesNet Polska Sp. z o. o.	~20×10²⁷
78.157.160.0/20	AS43709	SilesNet s.r.o.	SilesNet s. r. o.	4096
78.157.176.0/21	AS43709	SilesNet s.r.o.	SilesNet s. r. o.	2048
2a02:d8a0:4000::/34	AS43709	SilesNet s.r.o.	SilesNet s.r.o.	~20×10²⁷
78.157.176.0/20	AS43709	SilesNet s.r.o.	SilesNet s. r. o.	4096
2a02:d8a0::/33	AS43709	SilesNet s.r.o.	SilesNet s.r.o.	~40×10²⁷
2a02:d8a0::/32	AS43709	SilesNet s.r.o.	SilesNet s.r.o.	~79×10²⁷
2a02:d8a0:c000::/34	AS43709	SilesNet s.r.o.	SilesNet Polska Sp. z o. o.	~20×10²⁷
2a02:d8a0:8000::/33	AS43709	SilesNet s.r.o.	SilesNet Polska Sp. z o. o.	~40×10²⁷
78.157.184.0/21	AS43709	SilesNet s.r.o.	SilesNet Polska Sp. z o. o.	2048
78.157.160.0/21	AS43709	SilesNet s.r.o.	SilesNet s. r. o.	2048
78.157.160.0/19	AS43709	SilesNet s.r.o.	SilesNet s. r. o.	8192

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 'AS43075 - AS44168'

as-block:       AS43075 - AS44168
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:        2023-12-11T15:09:58Z
last-modified:  2023-12-11T15:09:58Z
source:         RIPE

% Information related to 'AS43709'

% Abuse contact for 'AS43709' is 'abuse@silesnet.net'

aut-num:        AS43709
as-name:        SILESNET
org:            ORG-Ss80-RIPE
remarks:        ***************************
remarks:        transit CE Colo Prague (CZ)
remarks:        ***************************
remarks:        Arelion
import:         from AS1299 accept ANY
export:         to AS1299 announce AS-SILESNET
remarks:        ***********************************
remarks:        pni / transit Vodafone Ostrava (CZ)
remarks:        ***********************************
remarks:        Vodafone / CW
import:         from AS16019 accept ANY
export:         to AS16019 announce AS-SILESNET
remarks:        ************************************************************************
remarks:        peering NIX Prague (CZ) / Frankfurt (DE) / Vienna (AT) / Bratislava (SK)
remarks:        ************************************************************************
remarks:        Akamai
import:         from AS20940 accept ANY
export:         to AS20940 announce AS-SILESNET
remarks:        Amazon
import:         from AS16509 accept ANY
export:         to AS16509 announce AS-SILESNET
remarks:        AS112 project
import:         from AS112 accept ANY
export:         to AS112 announce AS-SILESNET
remarks:        Cato Networks
import:         from AS13150 accept ANY
export:         to AS13150 announce AS-SILESNET
remarks:        CloudFlare
import:         from AS13335 accept ANY
export:         to AS13335 announce AS-SILESNET
remarks:        Core-Backbone
import:         from AS33891 accept ANY
export:         to AS33891 announce AS-SILESNET
remarks:        Fastly
import:         from AS54113 accept ANY
export:         to AS54113 announce AS-SILESNET
remarks:        Google
import:         from AS15169 accept ANY
export:         to AS15169 announce AS-SILESNET
remarks:        Hurricane Electric
import:         from AS6939 accept ANY
export:         to AS6939 announce AS-SILESNET
remarks:        i3D.net
import:         from AS49544 accept ANY
export:         to AS49544 announce AS-SILESNET
remarks:        Meta
import:         from AS32934 accept ANY
export:         to AS32934 announce AS-SILESNET
remarks:        Microsoft
import:         from AS8075 accept ANY
export:         to AS8075 announce AS-SILESNET
remarks:        NIX
import:         from AS6881 accept ANY
export:         to AS6881 announce AS-SILESNET
remarks:        NIX RS
import:         from AS47200 accept ANY
export:         to AS47200 announce AS-SILESNET
remarks:        OpenDNS
import:         from AS36692 accept ANY
export:         to AS36692 announce AS-SILESNET
remarks:        Prolexic
import:         from AS32787 accept ANY
export:         to AS32787 announce AS-SILESNET
remarks:        T-Mobile
import:         from AS6855 accept ANY
export:         to AS6855 announce AS-SILESNET
remarks:        Valve
import:         from AS32590 accept ANY
export:         to AS32590 announce AS-SILESNET
remarks:        Zayo
import:         from AS6461 accept ANY
export:         to AS6461 announce AS-SILESNET
remarks:        **************************
remarks:        peering TPIX Katowice (PL)
remarks:        **************************
remarks:        Amazon
import:         from AS16509 accept ANY
export:         to AS16509 announce AS-SILESNET
remarks:        CloudFlare
import:         from AS13335 accept ANY
export:         to AS13335 announce AS-SILESNET
remarks:        Edgio
import:         from AS15133 accept ANY
export:         to AS15133 announce AS-SILESNET
remarks:        Google
import:         from AS15169 accept ANY
export:         to AS15169 announce AS-SILESNET
remarks:        Hurricane Electric
import:         from AS6939 accept ANY
export:         to AS6939 announce AS-SILESNET
remarks:        i3D.net
import:         from AS49544 accept ANY
export:         to AS49544 announce AS-SILESNET
remarks:        Meta
import:         from AS32934 accept ANY
export:         to AS32934 announce AS-SILESNET
remarks:        Netflix
import:         from AS2906 accept ANY
export:         to AS2906 announce AS-SILESNET
remarks:        OVH
import:         from AS16276 accept ANY
export:         to AS16276 announce AS-SILESNET
remarks:        TPIX RS
import:         from AS29535 accept ANY
export:         to AS29535 announce AS-SILESNET
remarks:        Valve
import:         from AS32590 accept ANY
export:         to AS32590 announce AS-SILESNET
remarks:        *******************************
admin-c:        RH1462-RIPE
tech-c:         RH1462-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         SILESNET-MNT
created:        2007-09-18T09:11:32Z
last-modified:  2026-06-25T20:27:08Z
source:         RIPE

organisation:   ORG-SS80-RIPE
org-name:       SilesNet s.r.o.
country:        CZ
reg-nr:         25392280
org-type:       LIR
address:        Ostravska 584/12
address:        737 01
address:        Cesky Tesin
address:        CZECH REPUBLIC
phone:          +420555441441
admin-c:        RH1462-RIPE
abuse-c:        SICZ-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        SILESNET-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         SILESNET-MNT
created:        2007-08-20T09:47:05Z
last-modified:  2026-05-13T07:21:13Z
source:         RIPE # Filtered

person:         Roman Heczko
address:        SilesNet s. r. o.
address:        Ostravska 584/12
address:        Cesky Tesin
address:        737 01
address:        The Czech Republic
phone:          +420 558 711585
nic-hdl:        RH1462-RIPE
mnt-by:         SILESNET-MNT
created:        1970-01-01T00:00:00Z
last-modified:  2011-05-21T18:03:18Z
source:         RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.123 (DEXTER)

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.ripe.net",
  "as_blocks" : [ {
    "as_block" : "AS43075 - AS44168",
    "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" : "2023-12-11",
    "date_updated" : "2023-12-11",
    "source" : "RIPE"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS43709",
    "as_name" : "SILESNET",
    "status" : "ASSIGNED",
    "import" : [ "from AS1299 accept ANY", "from AS16019 accept ANY", "from AS20940 accept ANY", "from AS16509 accept ANY", "from AS112 accept ANY", "from AS13150 accept ANY", "from AS13335 accept ANY", "from AS33891 accept ANY", "from AS54113 accept ANY", "from AS15169 accept ANY", "from AS6939 accept ANY", "from AS49544 accept ANY", "from AS32934 accept ANY", "from AS8075 accept ANY", "from AS6881 accept ANY", "from AS47200 accept ANY", "from AS36692 accept ANY", "from AS32787 accept ANY", "from AS6855 accept ANY", "from AS32590 accept ANY", "from AS6461 accept ANY", "from AS16509 accept ANY", "from AS13335 accept ANY", "from AS15133 accept ANY", "from AS15169 accept ANY", "from AS6939 accept ANY", "from AS49544 accept ANY", "from AS32934 accept ANY", "from AS2906 accept ANY", "from AS16276 accept ANY", "from AS29535 accept ANY", "from AS32590 accept ANY" ],
    "export" : [ "to AS1299 announce AS-SILESNET", "to AS16019 announce AS-SILESNET", "to AS20940 announce AS-SILESNET", "to AS16509 announce AS-SILESNET", "to AS112 announce AS-SILESNET", "to AS13150 announce AS-SILESNET", "to AS13335 announce AS-SILESNET", "to AS33891 announce AS-SILESNET", "to AS54113 announce AS-SILESNET", "to AS15169 announce AS-SILESNET", "to AS6939 announce AS-SILESNET", "to AS49544 announce AS-SILESNET", "to AS32934 announce AS-SILESNET", "to AS8075 announce AS-SILESNET", "to AS6881 announce AS-SILESNET", "to AS47200 announce AS-SILESNET", "to AS36692 announce AS-SILESNET", "to AS32787 announce AS-SILESNET", "to AS6855 announce AS-SILESNET", "to AS32590 announce AS-SILESNET", "to AS6461 announce AS-SILESNET", "to AS16509 announce AS-SILESNET", "to AS13335 announce AS-SILESNET", "to AS15133 announce AS-SILESNET", "to AS15169 announce AS-SILESNET", "to AS6939 announce AS-SILESNET", "to AS49544 announce AS-SILESNET", "to AS32934 announce AS-SILESNET", "to AS2906 announce AS-SILESNET", "to AS16276 announce AS-SILESNET", "to AS29535 announce AS-SILESNET", "to AS32590 announce AS-SILESNET" ],
    "organization" : "ORG-Ss80-RIPE",
    "admin_contacts" : [ "RH1462-RIPE" ],
    "tech_contacts" : [ "RH1462-RIPE" ],
    "remarks" : [ "***************************", "transit CE Colo Prague (CZ)", "***************************", "Arelion", "***********************************", "pni / transit Vodafone Ostrava (CZ)", "***********************************", "Vodafone / CW", "************************************************************************", "peering NIX Prague (CZ) / Frankfurt (DE) / Vienna (AT) / Bratislava (SK)", "************************************************************************", "Akamai", "Amazon", "AS112 project", "Cato Networks", "CloudFlare", "Core-Backbone", "Fastly", "Google", "Hurricane Electric", "i3D.net", "Meta", "Microsoft", "NIX", "NIX RS", "OpenDNS", "Prolexic", "T-Mobile", "Valve", "Zayo", "**************************", "peering TPIX Katowice (PL)", "**************************", "Amazon", "CloudFlare", "Edgio", "Google", "Hurricane Electric", "i3D.net", "Meta", "Netflix", "OVH", "TPIX RS", "Valve", "*******************************" ],
    "mnt_by" : [ "RIPE-NCC-END-MNT", "SILESNET-MNT" ],
    "date_created" : "2007-09-18",
    "date_updated" : "2026-06-25",
    "source" : "RIPE"
  } ],
  "organization" : {
    "handle" : "ORG-SS80-RIPE",
    "name" : "SilesNet s.r.o.",
    "type" : "LIR",
    "address" : [ "Ostravska 584/12", "737 01", "Cesky Tesin", "CZECH REPUBLIC" ],
    "street" : "Ostravska",
    "city" : "Cesky Tesin",
    "zip_code" : "737 01",
    "country" : [ "CZ" ],
    "phone" : [ "+420555441441" ],
    "admin_contacts" : [ "RH1462-RIPE" ],
    "abuse_contacts" : [ "SICZ-RIPE" ],
    "mnt_ref" : [ "RIPE-NCC-HM-MNT", "SILESNET-MNT" ],
    "mnt_by" : [ "RIPE-NCC-HM-MNT", "SILESNET-MNT" ],
    "date_created" : "2007-08-20",
    "date_updated" : "2026-05-13",
    "source" : "RIPE",
    "addressCountry" : "CZECH REPUBLIC"
  },
  "administrative_contacts" : [ {
    "handle" : "RH1462-RIPE",
    "name" : "Roman Heczko",
    "address" : [ "SilesNet s. r. o.", "Ostravska 584/12", "Cesky Tesin", "737 01", "The Czech Republic" ],
    "street" : "Ostravska",
    "city" : "The",
    "zip_code" : "737 01",
    "country" : "CZECH REPUBLIC",
    "phone" : [ "+420 558 711585" ],
    "mnt_by" : [ "SILESNET-MNT" ],
    "date_created" : "1970-01-01",
    "date_updated" : "2011-05-21",
    "source" : "RIPE",
    "addressCountry" : "CZECH REPUBLIC"
  } ],
  "technical_contacts" : [ {
    "handle" : "RH1462-RIPE",
    "name" : "Roman Heczko",
    "address" : [ "SilesNet s. r. o.", "Ostravska 584/12", "Cesky Tesin", "737 01", "The Czech Republic" ],
    "street" : "Ostravska",
    "city" : "The",
    "zip_code" : "737 01",
    "country" : "CZECH REPUBLIC",
    "phone" : [ "+420 558 711585" ],
    "mnt_by" : [ "SILESNET-MNT" ],
    "date_created" : "1970-01-01",
    "date_updated" : "2011-05-21",
    "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
AS2906	Netflix Streaming Services Inc.	US
AS6855	Slovak Telekom, a.s.	SK
AS6939	Hurricane Electric LLC	US
AS6204	ZET.NET IP Transit	RO
AS60602	Inovare-Prim SRL	MD
AS20940	Akamai International B.V.	NL
AS22356	Durand do Brasil Ltda	BR
AS47200	NIX.CZ z.s.p.o.	CZ
AS198150	SIACOM JSC	GE
AS56373	WAVE FIBER Sp. z.o.o.	PL
AS201054	Stowarzyszenie e-Poludnie	PL
AS57344	Telehouse EAD	BG
AS9498	Bharti Airtel Ltd	IN
AS201054	Stowarzyszenie e Poludnie	PL
AS54113	Fastly, Inc.	US
AS29504	Freenet Liberec, z.s.	CZ
AS16509	Amazon.com, Inc.	US
AS6461	Zayo Bandwidth	US
AS15133	Edgecast Inc.	US
AS24740	NTT DATA Business Solutions sp. z o.o.	PL
AS53062	GGNET TELECOMUNICACOES LTDA	BR
AS206735	Novelcomm LP	GR
AS14840	BR.Digital Telecom	BR
AS36692	Cisco OpenDNS, LLC	US
AS33891	Core-Backbone GmbH	DE
AS32590	Valve Corporation	US
AS57463	NetIX Communications JSC	BG
AS12735	TurkNet Iletisim Hizmetleri A.S.	TR
AS15694	Atman Sp. z o.o.	PL
AS7713	PT Telekomunikasi Indonesia	ID
AS8801	Rocket Fibre Ltd	GB
AS8075	Microsoft Corporation	US
AS47200	NIXCZ_RS	CZ
AS13150	CATO NETWORKS LTD	IL
AS6204	INTERKVM HOST SRL	RO
AS212483	LEVEL EIGHTY SIX COMMUNICATIONS LTD	GB
AS1299	Arelion Sweden AB	SE
AS262355	VSX Networks	BR
AS32787	Akamai Technologies, Inc.	US
AS21215	UNITED GROUP NETWORK INFRASTRUCTURE d.o.o. Beograd	RS
AS24482	SG.GS	SG
AS12741	Netia SA	PL
AS1764	Next Layer Telekommunikationsdienstleistungs und Beratungs GmbH	AT
AS51184	Fonira Telekom GmbH	AT
AS7713	Telekomunikasi Indonesia PT	ID
AS28917	Fiord Networks, UAB	LT
AS6663	Euroweb Romania S.R.L.	RO
AS212483	LEVEL EIGHTY-SIX COMMUNICATIONS LTD	GB
AS29535	Orange Polska Spolka Akcyjna	PL
AS33891	Core Backbone GmbH	DE
AS49544	i3Dnet i3D.net B.V	NL
AS36236	NetActuate, Inc	US
AS4455	IX Reach Ltd	GB
AS16276	OVH SAS	FR
AS8218	operated Upstreamnet gmbh	FR
AS8218	Zayo Infrastructure France SA	FR
AS24940	Hetzner Online GmbH	DE

Upstreams

AS Number	Description	Country
AS39120	Convergenze S.p.A.	IT
AS21215	UNITED GROUP NETWORK INFRASTRUCTURE d.o.o. Beograd	RS
AS44306	OMONIA d.o.o.	HR
AS14840	BR.Digital Telecom	BR
AS1764	Next Layer Telekommunikationsdienstleistungs und Beratungs GmbH	AT
AS6939	Hurricane Electric LLC	US
AS6204	ZET.NET IP Transit	RO
AS12735	TurkNet Iletisim Hizmetleri A.S.	TR
AS28917	Fiord Networks, UAB	LT
AS7713	Telekomunikasi Indonesia PT	ID
AS22356	Durand do Brasil Ltda	BR
AS16019	Vodafone Czech Republic a.s.	CZ
AS6663	Euroweb Romania S.R.L.	RO
AS47200	NIX.CZ z.s.p.o.	CZ
AS33891	Core Backbone GmbH	DE
AS8218	operated Upstreamnet gmbh	FR
AS4455	IX Reach Ltd	GB
AS201054	Stowarzyszenie e Poludnie	PL
AS1299	Arelion Sweden AB	SE
AS6461	Zayo Bandwidth	US

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