AS2852

CESNET Z.S.P.O.

Name CESNET2
Status
Active
Country -
Website
cesnet.cz
Type Education
Total Prefixes 30
Valid RPKI 90%
Est. Population 26.9K
Registry RIPE
Age
Allocated
Last Updated
All 30 prefixes displayed, sorted by visibility. Sourced from 10 BGP locations ago.
All BGP Prefixes Announced by AS2852
Prefix IP Count Visibility IRR RPKI Domain Organization
147.32.0.0/15 131,070 High:96% RIPE Unknown cvut.cz
Ceske vysoke uceni technicke v Praze
147.230.0.0/15 131,070 High:96% RIPE Unknown -
IANA-BLK
160.216.0.0/15 131,070 High:96% RIPE Unknown unob.cz
Univerzita obrany
147.230.0.0/16 65,534 High:95% RIPE Valid tul.cz
RIPE-NCC-LEGACY-MNT
147.251.0.0/16 65,534 High:95% RIPE Valid muni.cz
RIPE-NCC-LEGACY-MNT
158.194.0.0/16 65,534 High:95% RIPE Valid upol.cz
UPOL-TCZ
158.196.0.0/16 65,534 High:95% RIPE Valid vsb.cz
VSB-TCZ
160.217.0.0/16 65,534 High:95% - Valid -
 
-
160.216.0.0/16 65,534 High:95% RIPE Valid unob.cz
Univerzita obrany
146.102.0.0/16 65,534 High:95% RIPE Valid vse.cz
VSE-TCZ
147.228.0.0/16 65,534 High:95% RIPE Valid zcu.cz
RIPE-NCC-LEGACY-MNT
147.231.0.0/16 65,534 High:95% RIPE Valid cas.cz
Czech Academy of Sciences
195.113.0.0/16 65,534 High:95% RIPE Valid cesnet.cz
RIPE-NCC-HM-MNT
147.33.0.0/16 65,534 High:95% RIPE Valid vscht.cz
Vysoka skola chemicko-technologicka v Praze
147.32.0.0/16 65,534 High:95% RIPE Valid cvut.cz
Ceske vysoke uceni technicke v Praze
78.128.128.0/17 32,766 High:95% RIPE Valid cesnet.cz
RIPE-NCC-HM-MNT
195.178.64.0/19 8,190 High:95% RIPE Valid cesnet.cz
RIPE-NCC-HM-MNT
193.84.192.0/19 8,190 High:95% RIPE Valid slu.cz
RIPE-NCC-END-MNT
193.84.32.0/20 4,094 High:95% RIPE Valid czu.cz
RIPE-NCC-END-MNT
193.84.208.0/20 4,094 High:95% RIPE Valid slu.cz
RIPE-NCC-END-MNT
193.84.160.0/20 4,094 High:95% RIPE Valid ujv.cz
RIPE-NCC-END-MNT
193.84.192.0/20 4,094 High:95% RIPE Valid slu.cz
RIPE-NCC-END-MNT
193.84.56.0/21 2,046 High:95% RIPE Valid cuni.cz
RIPE-NCC-END-MNT
193.84.80.0/22 1,022 High:95% RIPE Valid cesnet.cz
RIPE-NCC-END-MNT
185.8.160.0/22 1,022 High:95% RIPE Valid cesnet.cz
RIPE-NCC-HM-MNT
193.84.116.0/23 510 High:95% RIPE Valid cas.cz
RIPE-NCC-END-MNT
193.84.55.0/24 254 High:95% RIPE Valid cuni.cz
RIPE-NCC-END-MNT
193.84.53.0/24 254 High:95% RIPE Valid cuni.cz
RIPE-NCC-END-MNT
2001:718::/29 - High:92% RIPE Valid cesnet.cz
RIPE-NCC-HM-MNT
2001:718::/32 - High:92% RIPE Valid cesnet.cz
RIPE-NCC-HM-MNT
Showing high level RPKI validity distribution per IP version and per prefix.

IPv4

Prefix Distrib. Valid Unknown Invalid Total Perc.
/15 RPKI status distribution for IPv4 prefix size /15 Valid: 0% Unknown: 100% Invalid: 0% This stacked bar chart represents the RPKI status distribution for the IPv4 prefix size /15. Possible values for an RPKI status are: Valid, Invalid, Unknown. 0% of all /15 IPv4 prefixes are valid. 100% of all /15 IPv4 prefixes are unknown. 0% of all /15 IPv4 prefixes are invalid. 0 3 0 3 10%
/16 RPKI status distribution for IPv4 prefix size /16 Valid: 100% Unknown: 0% Invalid: 0% This stacked bar chart represents the RPKI status distribution for the IPv4 prefix size /16. Possible values for an RPKI status are: Valid, Invalid, Unknown. 100% of all /16 IPv4 prefixes are valid. 0% of all /16 IPv4 prefixes are unknown. 0% of all /16 IPv4 prefixes are invalid. 12 0 0 12 42%
/17 RPKI status distribution for IPv4 prefix size /17 Valid: 100% Unknown: 0% Invalid: 0% This stacked bar chart represents the RPKI status distribution for the IPv4 prefix size /17. Possible values for an RPKI status are: Valid, Invalid, Unknown. 100% of all /17 IPv4 prefixes are valid. 0% of all /17 IPv4 prefixes are unknown. 0% of all /17 IPv4 prefixes are invalid. 1 0 0 1 3%
/19 RPKI status distribution for IPv4 prefix size /19 Valid: 100% Unknown: 0% Invalid: 0% This stacked bar chart represents the RPKI status distribution for the IPv4 prefix size /19. Possible values for an RPKI status are: Valid, Invalid, Unknown. 100% of all /19 IPv4 prefixes are valid. 0% of all /19 IPv4 prefixes are unknown. 0% of all /19 IPv4 prefixes are invalid. 2 0 0 2 7%
/20 RPKI status distribution for IPv4 prefix size /20 Valid: 100% Unknown: 0% Invalid: 0% This stacked bar chart represents the RPKI status distribution for the IPv4 prefix size /20. Possible values for an RPKI status are: Valid, Invalid, Unknown. 100% of all /20 IPv4 prefixes are valid. 0% of all /20 IPv4 prefixes are unknown. 0% of all /20 IPv4 prefixes are invalid. 4 0 0 4 14%
/21 RPKI status distribution for IPv4 prefix size /21 Valid: 100% Unknown: 0% Invalid: 0% This stacked bar chart represents the RPKI status distribution for the IPv4 prefix size /21. Possible values for an RPKI status are: Valid, Invalid, Unknown. 100% of all /21 IPv4 prefixes are valid. 0% of all /21 IPv4 prefixes are unknown. 0% of all /21 IPv4 prefixes are invalid. 1 0 0 1 3%
/22 RPKI status distribution for IPv4 prefix size /22 Valid: 100% Unknown: 0% Invalid: 0% This stacked bar chart represents the RPKI status distribution for the IPv4 prefix size /22. Possible values for an RPKI status are: Valid, Invalid, Unknown. 100% of all /22 IPv4 prefixes are valid. 0% of all /22 IPv4 prefixes are unknown. 0% of all /22 IPv4 prefixes are invalid. 2 0 0 2 7%
/23 RPKI status distribution for IPv4 prefix size /23 Valid: 100% Unknown: 0% Invalid: 0% This stacked bar chart represents the RPKI status distribution for the IPv4 prefix size /23. Possible values for an RPKI status are: Valid, Invalid, Unknown. 100% of all /23 IPv4 prefixes are valid. 0% of all /23 IPv4 prefixes are unknown. 0% of all /23 IPv4 prefixes are invalid. 1 0 0 1 3%
/24 RPKI status distribution for IPv4 prefix size /24 Valid: 100% Unknown: 0% Invalid: 0% This stacked bar chart represents the RPKI status distribution for the IPv4 prefix size /24. Possible values for an RPKI status are: Valid, Invalid, Unknown. 100% of all /24 IPv4 prefixes are valid. 0% of all /24 IPv4 prefixes are unknown. 0% of all /24 IPv4 prefixes are invalid. 2 0 0 2 7%
Total RPKI status distribution for all IPv4 prefix sizes This stacked bar chart represents the RPKI status distribution for all the IPv4 prefix size. Possible values for an RPKI status are: Valid, Invalid, Unknown. 89.29% of all IPv4 prefixes are valid. 10.71% of all IPv4 prefixes are unknown. 0% of all IPv4 prefixes are invalid. 25 3 0 28 100%

IPv6

Prefix Distrib. Valid Unknown Invalid Total Perc.
/29 RPKI status distribution for Ipv6 prefix size /29 Valid: 100% Unknown: 0% Invalid: 0% This stacked bar chart represents the RPKI status distribution for the Ipv6 prefix size /29. Possible values for an RPKI status are: Valid, Invalid, Unknown. 100% of all /29 Ipv6 prefixes are valid. 0% of all /29 Ipv6 prefixes are unknown. 0% of all /29 Ipv6 prefixes are invalid. 1 0 0 1 50%
/32 RPKI status distribution for Ipv6 prefix size /32 Valid: 100% Unknown: 0% Invalid: 0% This stacked bar chart represents the RPKI status distribution for the Ipv6 prefix size /32. Possible values for an RPKI status are: Valid, Invalid, Unknown. 100% of all /32 Ipv6 prefixes are valid. 0% of all /32 Ipv6 prefixes are unknown. 0% of all /32 Ipv6 prefixes are invalid. 1 0 0 1 50%
Total RPKI status distribution for all Ipv6 prefix sizes This stacked bar chart represents the RPKI status distribution for all the Ipv6 prefix size. Possible values for an RPKI status are: Valid, Invalid, Unknown. 100% of all Ipv6 prefixes are valid. 0% of all Ipv6 prefixes are unkown. 0% of all Ipv6 prefixes are invalid. 2 0 0 2 100%

ABOUTResource Public Key Infrastructure is a specialized public key infrastructure framework to improve security for the Internet's BGP routing infrastructure. RPKI provides a way to connect Internet number resource information (such as ASN and IP addresses) to a trust anchor. Wikipedia ↗︎

All ASN sorted by their number. Sourced from 10 BGP locations.

Upstreams — Any direct adjacent ASN in an AS path sequence that leads to a tier 1 ASN.

All peers ASN for AS2852
ASN Organization
AS2914 NTT America, Inc.
AS6461 Zayo Bandwidth
AS6762 RIPE-NCC-END-MNT
AS6939 Hurricane Electric LLC

Downstreams — Any direct adjacent ASN in an AS path sequence that adds one-hop away from a tier 1 ASN.

All downstreams ASN for AS2852
ASN Organization
AS48091
 
RIPE-NCC-END-MNT
AS61110
 
Sprava informacnich technologii mesta Plzne, p.o.
AS197277
 
RIPE-NCC-END-MNT
AS197451
 
VUTBR-MNT
AS198500
 
Masarykova univerzita - Ustav vypocetni techniky
AS199604
 
RIPE-NCC-END-MNT
AS199711
 
National Cyber and Information Security Agency
AS200874
 
RIPE-NCC-END-MNT
AS201648
 
RIPE-NCC-END-MNT
AS202874
 
Zlinsky Kraj
AS204772
 
RIPE-NCC-END-MNT
AS208093
 
RIPE-NCC-END-MNT
AS210367
 
RIPE-NCC-END-MNT
AS210498
 
RIPE-NCC-END-MNT
AS212876
 
RIPE-NCC-END-MNT
AS213152
 
Narodni bezpecnostni urad Czech Republic

Peers — Any direct adjacent ASN, can include upstreams, downstreams or tier 1 ASN.

All peers ASN for AS2852
ASN Organization
AS1031 Peer 1 Internet Service LLC
AS1103
 
RIPE-NCC-LEGACY-MNT
AS1140
 
SIDN-MNT
AS1853 ACONET
AS2607 RIPE-NCC-END-MNT
AS2914 NTT America, Inc.
AS3216
 
RIPE-NCC-END-MNT
AS3399 RIPE-NCC-END-MNT
AS6461 Zayo Bandwidth
AS6667
 
RIPE-NCC-END-MNT
AS6762 RIPE-NCC-END-MNT
AS6939 Hurricane Electric LLC
AS8529 RIPE-NCC-END-MNT
AS8888 xtom
AS8966 EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC
AS9002 RETN Limited
AS9902 NeocomISP Limited
AS12779
 
RIPE-NCC-END-MNT
AS12859 BIT BV
AS13030
 
RIPE-NCC-END-MNT
AS13237 RIPE-NCC-END-MNT
AS16552 Tiggee LLC
AS18106 Viewqwest Pte Ltd
AS20965 RIPE-NCC-END-MNT
AS21320
 
RIPE-NCC-END-MNT
AS24482 SG.GS
AS34288 RIPE-NCC-END-MNT
AS34927 RIPE-NCC-END-MNT
AS38880 Micron21 Datacentre Pty Ltd
AS39120 RIPE-NCC-END-MNT
AS39122 RIPE-NCC-END-MNT
AS39351 RIPE-NCC-END-MNT
AS39591
 
RIPE-NCC-END-MNT
AS41095 IPTP LTD
AS41805 SAWAD LAND for Information Technology Ltd
AS42541 RIPE-NCC-END-MNT
AS45352 IP ServerOne Solutions Sdn Bhd
AS47787 RIPE-NCC-END-MNT
AS47957 RIPE-NCC-END-MNT
AS48091
 
RIPE-NCC-END-MNT
AS49544 RIPE-NCC-END-MNT
AS50304 RIPE-NCC-END-MNT
AS50763 RIPE-NCC-END-MNT
AS52320 GlobeNet Cabos Submarinos Colombia, S.A.S.
AS59605 Zain Omantel International FZ-LLC
AS61110
 
Sprava informacnich technologii mesta Plzne, p.o.
AS61568 ALOO TELECOM - FSF TECNOLOGIA SA
AS61955 RIPE-NCC-END-MNT
AS63927 RISE ASIA TECHNOLOGY LIMITED
AS137409 GSL Networks Pty LTD
AS197277
 
RIPE-NCC-END-MNT
AS197451
 
VUTBR-MNT
AS198500
 
Masarykova univerzita - Ustav vypocetni techniky
AS199524 G-Core Labs S.A.
AS199604
 
RIPE-NCC-END-MNT
AS199711
 
National Cyber and Information Security Agency
AS200874
 
RIPE-NCC-END-MNT
AS201648
 
RIPE-NCC-END-MNT
AS202874
 
Zlinsky Kraj
AS204772
 
RIPE-NCC-END-MNT
AS208093
 
RIPE-NCC-END-MNT
AS210367
 
RIPE-NCC-END-MNT
AS210498
 
RIPE-NCC-END-MNT
AS212876
 
RIPE-NCC-END-MNT
AS213152
 
Narodni bezpecnostni urad Czech Republic
AS262589 INTERNEXA Brasil Operadora de Telecomunicações S.A
AS328832 Network Platforms (PTY) LTD
All 3 Internet Exchange Points displayed, sorted by name. Sourced from PeeringDB ago. VIEW PEERINGDB
Internet Exchanges for AS2852
Name Location Addresses Link RS Peer
AMS-IX
Amsterdam Internet Exchange
Amsterdam
80.249.209.106
2001:7f8:1::a500:2852:1 		20 Gbps
Ethernet 		NO
NIX.CZ
Neutral Internet Exchange in the Czech Republic
Prague
91.210.16.190
2001:7f8:14::1:2 		100 Gbps
Ethernet 		NO
NIX.CZ
Neutral Internet Exchange in the Czech Republic
Prague
91.210.16.191
2001:7f8:14::1:1 		100 Gbps
Ethernet 		NO

ABOUTInternet Exchange Points (IXes or IXPs) are physical places where infrastructure companies interconnect with each other to exchange data destined for their respective networks. These locations are critical for companies to shorten their connection paths to other network participant, this allows for reduced round-trip time and low latency. Wikipedia ↗︎

Registrant

AS2852 Registrant Contact Details
Handle ORG-CA9-RIPE ↗︎
Type Org
Country -
Name CESNET z.s.p.o.
Email -
Phone +420 234 680 222
Address Generála Píky 430/26, Dejvice 160 00 Praha 6 CZECH REPUBLIC MAP ↗︎

Under the same Registrant

No other ASN registered under the same Registrant handle (ORG-CA9-RIPE).

Administrator

AS2852 Administrator Contact Details
Handle VN2-RIPE ↗︎
Type Individual
Country -
Name Vaclav Novak
Email -
Phone +420 234 680 200
Address CESNET, z.s.p.o. Generala Piky 430/26 Praha 6 160 00 The Czech Republic MAP ↗︎

Under the same Administrator

Other ASNs registered under the same admin handle: VN2-RIPE
ASN Name
AS2605 CESNET

Abuse

AS2852 Abuse Contact Details
Handle CZNA1-RIPE ↗︎
Type Group
Country -
Name CESNET z.s.p.o. Network Administrators
Email [email protected]
Phone +420 602 252 531
Address CESNET, z.s.p.o. Generala Piky 430/26 Prague 6 160 00 The Czech Republic MAP ↗︎

Under the same Abuse handle

Other ASNs registered under the same abuse handle: CZNA1-RIPE
ASN Name
AS2605 CESNET

Technical

AS2852 Tech Contact Details
Handle VN2-RIPE ↗︎
Type Individual
Country -
Name Vaclav Novak
Email -
Phone +420 234 680 200
Address CESNET, z.s.p.o. Generala Piky 430/26 Praha 6 160 00 The Czech Republic MAP ↗︎

Under the same Tech handle

Other ASNs registered under the same technical handle: VN2-RIPE
ASN Name
AS2605 CESNET