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ASN Lookup Tool
AS201594 CTU_AS4

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS201594
Organisation
Czech Telecommunication Office
Name
CTU_AS4
Total IPv4 Addresses
256
Total IPv4 Prefixes
1
Total IPv6 Prefixes
1
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#71,316 out of 79,117
Registry
Ripe
Registered Country
CZ flagCZ
Registered Country Name
Czechia
Registered Date
2014-09-12
Registration Last Change
2025-07-04
Receiving From
ASN
Organisation
AS6939
US flagHurricane Electric LLC
AS32590
US flagValve Corporation
AS25248
CZ flagRADIOKOMUNIKACE a.s.
AS49544
NL flagi3D.net B.V
AS14840
BR flagBR.Digital Provider
Showing 5 of 12
IPv4 Active Prefixes
PrefixRange FromRange To
185.68.215.0/24185.68.215.0185.68.215.255
IPv6 Active Prefixes
PrefixRange FromRange To
2a05:1c47::/322a05:1c47::2a05:1c47:ffff:ffff:ffff:ffff:ffff:ffff