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ASN Lookup Tool
AS25291 SYSELEVEN

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS25291
Organisation
SysEleven GmbH
Name
SYSELEVEN
Total IPv4 Addresses
37,120
Total IPv4 Prefixes
19
Total IPv6 Prefixes
28
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#4,692 out of 79,528
Registry
Ripe
Registered Country
DE flagDE
Registered Country Name
Germany
Registered Date
2009-12-07
Registration Last Change
2025-12-19
Receiving From
ASN
Organisation
AS5405
DE flagInter.link GmbH
AS13058
DE flagserve-u - Buchholz und Suenderhauf GbR
Transit To
ASN
Organisation
AS41821
DE flagOptimizely GmbH
AS25152
NL flagReseaux IP Europeens Network Coordination Centre..
IPv4 Active Prefixes
PrefixRange FromRange To
37.44.0.0/2137.44.0.037.44.7.255
37.49.152.0/2137.49.152.037.49.159.255
37.123.104.0/2137.123.104.037.123.111.255
77.247.80.0/2177.247.80.077.247.87.255
109.68.224.0/21109.68.224.0109.68.231.255
Showing 5 of 19
IPv6 Active Prefixes
PrefixRange FromRange To
2a00:13c8::/472a00:13c8::2a00:13c8:1:ffff:ffff:ffff:ffff:ffff
2a00:13c8:2::/482a00:13c8:2::2a00:13c8:2:ffff:ffff:ffff:ffff:ffff
2a00:13c8:3::/482a00:13c8:3::2a00:13c8:3:ffff:ffff:ffff:ffff:ffff
2a00:13c8:4::/462a00:13c8:4::2a00:13c8:7:ffff:ffff:ffff:ffff:ffff
2a00:13c8:8::/452a00:13c8:8::2a00:13c8:f:ffff:ffff:ffff:ffff:ffff
Showing 5 of 28