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ASN Lookup Tool
AS24971 MASTER-AS

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS24971
Organisation
Master Internet s.r.o.
Name
MASTER-AS
Total IPv4 Addresses
57682
Total IPv4 Prefixes
33
Total IPv6 Prefixes
28
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#3,951 out of 77,412
Registry
Ripe
Registered Country
CZ flag CZ
Registered Country Name
Czechia
Registered Date
2002-06-11
Registration Last Change
2024-04-02
Receiving From

The list of active Autonomous Systems (ASs) which send traffic to that ASN.

ASN
Organisation
AS6939
US flagHurricane Electric LLC
AS1299
SE flagArelion Sweden AB
AS49544
NL flagi3D.net B.V
AS199524
LU flagG-Core Labs S.A.
AS36236
US flagNetActuate, Inc
Showing 5 of 11
Transit To

The list of active Autonomous Systems (ASs) which receive traffic from that ASN.

 

ASN
Organisation
AS211085
CZ flagmapnet IT services s.r.o.
AS204957
US flagGREEN FLOID LLC
AS21045
CZ flagK-net Technical International Group, s.r.o.
AS207167
CZ flagmapnet IT services s.r.o.
AS51134
CZ flagDevelopment 777 s.r.o.
Showing 5 of 7
IPv4 Active Prefixes

This provides the list of IPv4 address space routes/prefixes currently announced on Border Gateway Protocol (BGP).

Prefix5.180.200.0/22
Range From5.180.200.0
Range To5.180.203.255
Prefix37.140.220.0/24
Range From37.140.220.0
Range To37.140.220.255
Prefix37.205.8.0/22
Range From37.205.8.0
Range To37.205.11.255
Prefix37.205.12.0/22
Range From37.205.12.0
Range To37.205.15.255
Prefix77.93.192.0/19
Range From77.93.192.0
Range To77.93.223.255
Showing 5 of 33
IPv6 Active Prefixes
Prefix2001:678:a50::/48
Range From2001:678:a50::
Range To2001:678:a50:ffff:ffff:ffff:ffff:ffff
Prefix2001:67c:68::/48
Range From2001:67c:68::
Range To2001:67c:68:ffff:ffff:ffff:ffff:ffff
Prefix2a00:8220::/32
Range From2a00:8220::
Range To2a00:8220:ffff:ffff:ffff:ffff:ffff:ffff
Prefix2a00:a5a0::/32
Range From2a00:a5a0::
Range To2a00:a5a0:ffff:ffff:ffff:ffff:ffff:ffff
Prefix2a01:430::/44
Range From2a01:430::
Range To2a01:430:f:ffff:ffff:ffff:ffff:ffff
Showing 5 of 28
Autonomous System (AS) is a network (or collection of networks) that are all managed and supervised by a single entity or organisation. This tool provides a comprehensive ownership and connectivity report for any given AS number.