AS number details

AS2852

CESNET z.s.p.o.  ·  cesnet.cz

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AS2852 – CESNET z.s.p.o.

Field Value
Country Czechia
Website cesnet.cz
Hosted domains 2,843
Number of IPv4 848,896
Number of IPv6 713,053,462,628,379,038,341,895,553,024
ASN type ISP
Registry ripe
Allocated 22 years ago on Jun 22, 2002
Updated 16 days ago on Jun 19, 2024
Netblock Company Num of IPs
146.102.0.0/16 Vysoka skola ekonomicka v Praze 65,536
147.228.0.0/16 Plzen 65,536
147.230.0.0/15 Liberec 131,072
147.230.0.0/16 Liberec 65,536
147.231.0.0/16 Praha 65,536
147.251.0.0/16 Brno 65,536
147.32.0.0/15 Prague 131,072
147.32.0.0/16 Prague 65,536
147.33.0.0/16 Praha 6 65,536
158.194.0.0/16 Univerzita Palackeho 65,536
158.196.0.0/16 VSB - Technical University 65,536
160.216.0.0/15 Univerzita obrany 131,072
160.216.0.0/16 Univerzita obrany 65,536
160.217.0.0/16 University of South Bohemia 65,536
185.8.160.0/22 CESNET z.s.p.o. 1,024
193.84.116.0/23 Institute of Chemical Process Fundamentals of the CAS, v.v.i. 512
193.84.160.0/20 UJV Rez, a.s. 4,096
193.84.192.0/19 Slezska univerzita v Opave 8,192
193.84.192.0/20 Slezska univerzita v Opave 4,096
193.84.208.0/20 Slezska univerzita v Opave 4,096
193.84.32.0/20 Ceska zemedelska univerzita v Praze 4,096
193.84.53.0/24 Charles University 256
193.84.55.0/24 Charles University 256
193.84.56.0/21 Charles University 2,048
193.84.80.0/22 Prague 6 1,024
195.113.0.0/16 CESNET z.s.p.o. 65,536
195.178.64.0/19 CESNET z.s.p.o. 8,192
78.128.128.0/17 CESNET z.s.p.o. 32,768
Netblock Company
2001:718::/29 CESNET z.s.p.o.
2001:718::/32 CESNET z.s.p.o.
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WHOIS Details


ASHandle:       AS2852
OrgID:          AS2852
ASName:         AS2852
ASNumber:       AS2852
RegDate:        0000-00-00
Updated:        0000-00-00
TechHandle:     AA00-AAAA
Source:         AAAA

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Hosted Domains

There are 2,843 domain names hosted across 1,017 IP addresses on this ASN.

IP Address Domain Domains on this IP
147.251.5.234 ████████ 137
147.251.5.239 ███████ 106
147.231.163.211 ██████ 64
195.113.89.35 ███████ 53
78.128.246.81 ████████ 40
147.251.6.69 ████████ 36
193.84.206.148 ██████████ 34
146.102.17.31 ██████████ 33
195.113.187.197 ███████ 30
195.113.2.17 ██████████ 29

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Useful for Cybersecurity

Peers

There are 172 peers for this ASN.

Peers Name
AS1031 CORIX NETWORKS
AS1103 SURF B.V.
AS1140 Stichting Internet Domeinregistratie Nederland
AS12552 GlobalConnect AB
AS12637 SEEWEB s.r.l.
AS12779 IT.Gate S.p.A.
AS12859 BIT BV
AS12969 Vodafone Iceland
AS13030 Init7 (Switzerland) Ltd.
AS13194 UAB "Bite Lietuva"
AS13237 euNetworks GmbH
AS137409 GSL Networks Pty LTD
AS14630 Invesco Group Services, Inc.
AS14840 BR.Digital Provider
AS14907 Wikimedia Foundation Inc.
AS15435 DELTA Fiber Nederland B.V.
AS15547 netplus.ch SA
AS15576 NTS workspace AG
AS15605 Connesi s.p.a.
AS15802 Emirates Integrated Telecommunications Company PJSC
AS15830 Equinix (EMEA) Acquisition Enterprises B.V.
AS16019 Vodafone Czech Republic a.s.
AS16509 Amazon.com, Inc.
AS16552 Tiggee LLC
AS17639 Converge ICT Solutions Inc.
AS1764 Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH
AS18106 Viewqwest Pte Ltd
AS1828 Unitas Global LLC
AS1853 ACONET
AS197277 State Institute for Drug Control
AS197451 Brno University of Technology
AS198150 SIACOM JSC
AS198500 Masarykova univerzita - Ustav vypocetni techniky
AS199524 G-Core Labs S.A.
AS199604 OLOMOUCKY KRAJ
AS199711 National Cyber and Information Security Agency
AS199803 ComSource s.r.o.
AS199938 Netzwerge GmbH
AS200874 Liberecky kraj
AS201648 Plzensky kraj
AS202297 Skylon Solutions Limited
AS202874 Zlinsky Kraj
AS204772 Reditelstvi silnic a dalnic s.p.
AS20562 Broadband Hosting B.V.
AS20764 CJSC RASCOM
AS208093 Moravskoslezsky kraj
AS20932 Services Industriels de Geneve
AS20965 GEANT Vereniging
AS210367 Krajska zdravotni, a.s.
AS210498 Kraj Vysocina
AS2119 Telenor Norge AS
AS212483 LEVEL EIGHTY-SIX COMMUNICATIONS LTD
AS212876 Pardubicky Kraj
AS213152 Narodni bezpecnostni urad Czech Republic
AS21320 GEANT Vereniging
AS213241 TECHIT.BE SRL
AS22356 Durand do Brasil Ltda
AS23106 AMERICAN TOWER DO BRASIL-COMUNICAÇÂO MULTIMÍDIA LT
AS24482 SG.GS
AS24961 WIIT AG
AS25091 IP-Max SA
AS25160 Vorboss Limited
AS25220 equada network GmbH
AS2607 Zdruzenie pouzivatelov Slovenskej akademickej datovej siete
AS262589 INTERNEXA Brasil Operadora de Telecomunicações S.A
AS263152 MIGO TELECOM
AS2686 AT&T Corp.
AS271253 LINK BRASIL TELECOMUNICACOES LTDA
AS28329 Megatelecom Telecomunicacoes Ltda
AS29075 IELO-LIAZO SERVICES SAS
AS2914 NTT America, Inc.
AS29140 Hostserver GmbH
AS29169 GANDI SAS
AS29396 Eurofiber UNET
AS29504 Freenet Liberec, z.s.
AS31027 GlobalConnect A/S
AS31042 Serbia BroadBand-Srpske Kablovske mreze d.o.o.
AS31122 Digiweb ltd
AS31133 PJSC MegaFon
AS3216 PJSC "Vimpelcom"
AS328832 Network Platforms (PTY) LTD
AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
AS33891 Core-Backbone GmbH
AS3399 Obenetwork AB
AS34019 Hivane Association
AS34080 MIRAMO spol. s.r.o.
AS34224 Neterra Ltd.
AS34288 Kantonsschule Zug
AS34549 meerfarbig GmbH & Co. KG
AS3462 Data Communication Business Group
AS34927 iFog GmbH
AS35280 F5 Networks SARL
AS35598 INETCOM CARRIER LLC
AS36236 NetActuate, Inc
AS37100 SEACOM Limited
AS37468 Angola Cables
AS37721 Virtual Technologies & Solutions
AS38880 Micron21 Datacentre Pty Ltd
AS39120 Convergenze S.p.A.
AS39122 Blacknight Internet Solutions Limited
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Upstreams

There are 5 upstreams for this ASN.

upstreams Name
AS2914 NTT America, Inc.
AS49025 PRO-ZETA a.s.
AS6461 Zayo Bandwidth
AS6762 TELECOM ITALIA SPARKLE S.p.A.
AS6939 Hurricane Electric LLC
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Downstreams

There are 17 downstreams for this ASN.

Downstreams Name
AS197277 State Institute for Drug Control
AS197451 Brno University of Technology
AS198500 Masarykova univerzita - Ustav vypocetni techniky
AS199604 OLOMOUCKY KRAJ
AS199711 National Cyber and Information Security Agency
AS200874 Liberecky kraj
AS201648 Plzensky kraj
AS202874 Zlinsky Kraj
AS204772 Reditelstvi silnic a dalnic s.p.
AS208093 Moravskoslezsky kraj
AS210367 Krajska zdravotni, a.s.
AS210498 Kraj Vysocina
AS212876 Pardubicky Kraj
AS213152 Narodni bezpecnostni urad Czech Republic
AS48091 Kraj Vysocina
AS51727 Doosan Skoda Power s.r.o
AS61110 Sprava informacnich technologii mesta Plzne, p.o.
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Related Networks

What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS2852 at robtex.

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