AS2852

CESNET z.s.p.o.

CESNET2
Organization
Title
CESNET z.s.p.o.
Website
https://www.cesnet.cz
Details
Regional Internet registry
RIPE
Allocated
22 Jun 2002
IP Addresses count
848,896
Traffic estimation
100-200Gbps
Balanced
Coordinates
Country
Czechia
Summary
The organization CESNET z.s.p.o. allocates 22 IP netblocks under the autonomous system number (ASN ) of 2852. The regional internet registry (RIR ) for this ASN is RIPE. The country in which these IPs are located is Czechia (CZ), which is on #27 out of 249 countries by the total amount of ASNs allocated - 718.

AS2852 has 137 peers, 1 upstreams and 13 downstreams with a total of 848,896 IP addresses.
IP Address ranges
Block Description IPs count
78.128.128.0/17 CESNET-TCZ 32,768
146.102.0.0/16 Vysoka skola ekonomicka v Praze Prague 65,536
147.32.0.0/15 The whole IPv4 address space 131,072
147.228.0.0/16 Plzen 65,536
147.230.0.0/15 The whole IPv4 address space 131,072
147.251.0.0/16 Brno 65,536
158.194.0.0/16 Olomouc 65,536
158.196.0.0/16 VSB-TCZ 65,536
160.216.0.0/15 The whole IPv4 address space 131,072
185.8.160.0/22 CESNET-TCZ 1,024
193.84.32.0/20 Ceska zemedelska univerzita v Praze Prague 6 4,096
193.84.53.0/24 Charles University Prague 256
193.84.55.0/24 Charles University Prague 256
193.84.56.0/21 Charles University Prague 2,048
193.84.80.0/22 Prague 6 1,024
193.84.116.0/23 Institute of Chemical Process Fundamentals of the CAS, v.v.i. Prague 6 512
193.84.160.0/20 Rez 4,096
193.84.192.0/20 Slezska univerzita v Opave Opava, Karvina 4,096
193.84.192.0/19 Slezska univerzita v Opave Opava, Karvina 8,192
193.84.208.0/20 Slezska univerzita v Opave Opava, Karvina 4,096
195.113.0.0/16 CESNET-TCZ 65,536
195.178.64.0/19 CESNET-T34CZ 8,192
Peers
ASN Name IPs Count
AS1764 Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH 85,760
AS1853 ACOnet Backbone 466,432
AS2686 AT&T Global Network Services, LLC 17,711,616
AS2607 Zdruzenie pouzivatelov Slovenskej akademickej datovej siete 558,592
AS3216 PJSC "Vimpelcom" 1,063,776
AS3267 The federal state autonomous educational establishment of additional professional education Center of Realization of State Educational Policy and Informational Technologies 272,640
AS3303 Swisscom (Schweiz) AG 3,607,552
AS4657 StarHub Ltd 644,096
AS5610 O2 Czech Republic, a.s. 1,552,896
AS5713 SAIX-NET 2,258,176
AS6667 Elisa Oyj 2,816
AS6830 Liberty Global B.V. 12,174,336
AS6855 Slovak Telecom, a. s. 674,816
AS6881 NIX.CZ z.s.p.o. 3,328
AS6939 Hurricane Electric LLC 516,096
AS7713 TELKOMNET-AS-AP PT Telekomunikasi Indonesia 3,399,424
AS8218 Zayo France SAS 56,064
AS8359 MTS PJSC 1,168,128
AS8447 A1 Telekom Austria AG 2,257,152
AS8468 ENTANET International Limited 360,448
AS8492 "OBIT" Ltd. 76,800
AS8518 RFE/RL, Inc., organizacni slozka 7,936
AS8732 OJSC Comcor 139,776
AS9304 HGC Global Communications Limited 1,500,928
AS10906 NIC. 512
AS11284 NIC. 512
AS12552 IP-Only Networks AB 417,280
AS12637 SEEWEB s.r.l. 98,048
AS12741 Netia SA 1,651,968
AS12779 IT.Gate S.p.A. 51,712
AS12850 IRIDEOS S.P.A. 37,888
AS13030 Init7 (Switzerland) Ltd. 95,744
AS13237 euNetworks GmbH 576,000
AS13335 Cloudflare, Inc. 1,573,376
AS14061 DigitalOcean, LLC 2,272,768
AS14840 COMMCORP COMUNICACOES LTDA 53,504
AS15547 netplus.ch SA 125,696
AS15685 Casablanca INT 60,160
AS16019 Vodafone Czech Republic a.s. 175,872
AS16246 Nej.cz s.r.o. 117,760
AS16509 Amazon.com, Inc. 33,372,160
AS18106 Viewqwest Pte Ltd 51,456
AS20723 AVONET, s.r.o. 15,360
AS20764 CJSC RASCOM 13,568
AS20804 Exatel S.A. 247,040
AS20932 Services Industriels de Geneve 9,472
AS21430 WIA spol. s.r.o. 37,376
AS24482 SG.GS 22,784
AS25192 CZ.NIC, z.s.p.o. 6,400
AS25234 ACTIVE 24, s.r.o. 8,192
AS25424 InterneXt 2000, s.r.o. 33,792
AS25512 CD-Telematika a.s. 122,368
AS28260 EPP 16,896
AS28725 CETIN a.s. 133,888
AS28892 Cesky urad zememericky a katastralni 256
AS28917 LLC "TRC FIORD" 46,336
AS29086 GiTy, a.s. 4,096
AS29208 Dial Telecom, a.s. 260,608
AS29504 Freenet Liberec, z.s. 1,024
AS31019 Paulus M. Hoogsteder trading as Meanie 256
AS31133 PJSC MegaFon 787,712
AS31349 a-net Liberec s.r.o. 5,120
AS33891 Core-Backbone GmbH 0
AS34080 MIRAMO spol. s.r.o. 11,264
AS34224 Neterra Ltd. 56,576
AS34288 Kantonsschule Zug 16,640
AS35236 2 connect a.s. 9,472
AS35361 GREPA Networks s.r.o. 10,240
AS36692 Cisco OpenDNS, LLC 56,576
AS37100 SEACOM Limited 1st Floor, North Wing Orange Tower, Cybercity Ebene Mauritius +230 401 0915 In case of abuse, please contact [email protected] 1,071,360
AS37468 ANGOLA Cables 5,120
AS37497 Network Platforms Pty Ltd 14,336
AS38880 Micron21 Datacentre Pty Ltd 31,488
AS39120 Convergenze S.p.A. 92,672
AS39122 Blacknight Internet Solutions Limited 27,392
AS39351 31173 Services AB 7,168
AS39791 Telco Pro Services, a. s. 18,432
AS41095 IPTP LTD 40,704
AS41327 Fiber Telecom S.p.A. 8,448
AS43413 NEW TELEKOM, spol. s r.o. 6,144
AS43531 IX Reach Ltd 14,592
AS43541 VSHosting s.r.o. 19,968
AS43708 METRONET s.r.o. 24,064
AS43709 SilesNet s.r.o. 8,192
AS45352 IP ServerOne Solutions Sdn Bhd 28,928
AS47110 Cloud4com, a.s. 4,608
AS47147 ANEXIA Internetdienstleistungs GmbH 1,280
AS47232 ISP Alliance a.s. 21,760
AS47868 SUPRO, spol. s r.o. 4,096
AS48091 Kraj Vysocina 1,536
AS48298 MINISTERSTVO VNITRA CR 3,072
AS48417 ITS akciova spolecnost 4,096
AS49101 KABELOVA TELEVIZE CZ s.r.o. 9,216
AS49605 Digital Telecommunication Services S.r.l. 9,728
AS50304 Blix Solutions AS 38,912
AS50695 VLTAVA LABE MEDIA a.s. 512
AS50698 TETA s.r.o. 11,264
AS51185 Onecom Global Communications LTD 5,632
AS51727 SKODA POWER s.r.o. 512
AS51800 FIBER Network s.r.o. 4,096
AS52320 GlobeNet Cabos Submarinos Colombia 10,496
AS55329 Telcotech Ltd. 4,096
AS56344 Viridium.cz s.r.o. 1,024
AS56456 C2NET s.r.o. 4,096
AS58239 hanspaul-city.net s.r.o. 1,536
AS58511 Anycast Global Backbone 6,912
AS59984 KLFREE NETWORKS, s.r.o. 1,024
AS60501 Sirius Technology SRL 4,864
AS61110 Sprava informacnich technologii mesta Plzne, p.o. 1,024
AS61955 ColocationIX GmbH 1,280
AS63927 RISE 5,120
AS196762 ALKOM Security, a.s. 256
AS197277 State Institute for Drug Control 2,048
AS197451 Brno University of Technology 67,072
AS197595 Obenetwork AB 27,648
AS198605 AVAST Software s.r.o. 21,504
AS199604 OLOMOUCKY KRAJ 256
AS199711 National Cyber and Information Security Agency 1,024
AS199803 ComSource s.r.o. 1,536
AS200874 Liberecky kraj 1,024
AS201163 Komercni banka, a.s. 1,024
AS201594 Czech Telecommunication Office 256
AS201648 Plzensky kraj 2,048
AS202297 Skylon Solutions Limited 512
AS202605 EMPECOM, s.r.o. 1,024
AS202874 Zlinsky Kraj 1,024
AS202921 CC INTERNET s.r.o. 1,792
AS203165 Statni pokladna Centrum sdilenych sluzeb, s.p. 2,048
AS204772 Reditelstvi silnic a dalnic CR 1,024
AS204860 NetX R&D z.s. 20,992
AS207153 Stream-iT, s.r.o. 1,024
AS208060 Dr. Max BDC, s.r.o. 512
AS208093 Moravskoslezsky kraj 1,024
AS208882 Automation & Business, s.r.o. 1,024
AS213387 TeSuNet s.r.o. 256
AS267613 ELETRONET S.A. 1,024
AS6762 TELECOM ITALIA SPARKLE S.p.A. 128,768
Upstreams
ASN Name IPs Count
AS6762 TELECOM ITALIA SPARKLE S.p.A. 128,768
Downstreams
ASN Name IPs Count
AS2607 Zdruzenie pouzivatelov Slovenskej akademickej datovej siete 558,592
AS48091 Kraj Vysocina 1,536
AS51727 SKODA POWER s.r.o. 512
AS61110 Sprava informacnich technologii mesta Plzne, p.o. 1,024
AS197277 State Institute for Drug Control 2,048
AS197451 Brno University of Technology 67,072
AS199604 OLOMOUCKY KRAJ 256
AS199711 National Cyber and Information Security Agency 1,024
AS200874 Liberecky kraj 1,024
AS201648 Plzensky kraj 2,048
AS202874 Zlinsky Kraj 1,024
AS204772 Reditelstvi silnic a dalnic CR 1,024
AS208093 Moravskoslezsky kraj 1,024
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