$ query “AS25291” --type=asn → 1 result(s)
AS25291 · SYSELEVEN
SysEleven GmbH
AS25291 is owned by SysEleven GmbH and is a residential access provider, registered in Germany since 2009. The system announces a respectable 37 120 IPv4 addresses, and supports IPv6. Most of its address space is geolocated to Germany, with additional presence in Sweden and Switzerland.
Basic Information
- Country
- 🇩🇪 Germany
- Category
- Internet Service Provider
- Network Role
- Access Provider
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- December 07, 2009
- Last Changed
- October 03, 2026
- Last Seen
- October 12, 2026 (active)
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 38 / 15
- IPv6 Prefixes (raw / aggregated)
- 14 / 8
- IPv4 Addresses
- 37 120
- Largest IPv4 Prefix
- /18 (16 384 addresses)
- Largest IPv6 Prefix
- /32
- Geolocated Countries
- 🇩🇪 Germany (35 040 IPs), 🇸🇪 Sweden (2 048 IPs), 🇨🇭 Switzerland (32 IPs)
- Prefix Changed
- September 16, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs
Connectivity Summary
- Upstream Providers
- 2 upstreams providing transit
- Downstream Customers
- 1 downstream buying transit
- Unclassified
- 1 unclassified BGP neighbor
- Degree
- 4 unique BGP neighbors
- Reach
- 1 network in customer cone
Upstream Providers (2)
Prefix Lists
IPv4 Prefixes (38 total)
- 195.192.128.0/18 (16 384 addresses (/18 prefix))
- 37.44.0.0/21 (2 048 addresses (/21 prefix))
- 37.49.152.0/21 (2 048 addresses (/21 prefix))
- 37.123.104.0/21 (2 048 addresses (/21 prefix))
- 77.247.80.0/21 (2 048 addresses (/21 prefix))
- 109.68.224.0/21 (2 048 addresses (/21 prefix))
- 151.252.40.0/21 (2 048 addresses (/21 prefix))
- 176.74.56.0/21 (2 048 addresses (/21 prefix))
- 185.56.128.0/21 (2 048 addresses (/21 prefix))
- 147.93.208.0/22 (1 024 addresses (/22 prefix))
- 185.46.136.0/22 (1 024 addresses (/22 prefix))
- 185.54.232.0/22 (1 024 addresses (/22 prefix))
- 185.56.104.0/23 (512 addresses (/23 prefix))
- 185.245.102.0/23 (512 addresses (/23 prefix))
- 185.245.101.0/24 (256 addresses (/24 prefix))
IPv6 Prefixes (14 total)
- 2a00:13c8::/32
- 2a00:7fc0::/33
- 2a04:d480::/37
- 2a04:d480:800::/38
- 2a04:d480:2400::/38
- 2a04:d480:2c00::/38
- 2a04:d480:4400::/38
- 2a04:d480:4800::/38