$ query “AS205100” --type=asn → 1 result(s)
AS205100 · F3NETZE
F3 Netze e.V.
AS205100 is run by F3 Netze e.V. and is an enterprise stub network, registered in Germany since 2017. The system announces 256 IPv4 addresses, and supports IPv6. Its primary geographic footprint is in Germany. ⚠️ This AS has a high concentration of IPs flagged for malicious activity.
- Dark Side — Very high concentration of IPs on threat intelligence feeds (>=2%)
Basic Information
- Country
- 🇩🇪 Germany
- Category
- Business
- Network Role
- Stub Network
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- November 08, 2017
- Last Changed
- March 04, 2026
- Last Seen
- August 01, 2026 (active)
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 1 / 1
- IPv6 Prefixes (raw / aggregated)
- 6 / 6
- IPv4 Addresses
- 256
- Largest IPv4 Prefix
- /24 (256 addresses)
- Largest IPv6 Prefix
- /40
- Geolocated Countries
- 🇩🇪 Germany (512 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Dirty — 16 flagged IPs out of 256 total (6.25%)
- Tor Exit Nodes
- 16 known Tor exit nodes in this network
Connectivity Summary
- Upstream Providers
- 1 upstream providing transit
- Peers
- 1 network exchanging traffic without transit
- Unclassified
- 3 unclassified BGP neighbors
- Degree
- 5 unique BGP neighbors
- Reach
- 0 networks in customer cone
Upstream Providers (1)
- AS47147 — AS-ANX
Prefix Lists
IPv4 Prefixes (1 total)
- 185.220.100.0/24 (256 addresses (/24 prefix))
IPv6 Prefixes (6 total)
- 2a0b:f4c0::/40
- 2a0b:f4c0:100::/48
- 2a0b:f4c0:16c::/48
- 2a0b:f4c0:1a4::/48
- 2a0b:f4c0:1b4::/48
- 2a0b:f4c0:400::/48