DFN Systems
BGP inherited
Cluster stats
| Netblocks | 20 · 6,582 IPv4 addresses |
| Registered in | Germany (14) · United States (3) · BD (1) |
| Cluster ID | 208813699 |
| Registry | APNIC |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 14 shared RIR contact/maintainer handles |
| Registry names | 11 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works | |
Footprint over time
5 weekly snapshots · JSON
64
0 netblocks since 2026-07-05
2026-07-05
peak 64
2026-07-19
IP Ranges (20)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 74.116.128.0/21 | DFN Systems | BGP | ANNOUNCED | ● high |
| 199.83.116.0/22 | DFN Systems | BGP | ANNOUNCED | ● high |
| 103.81.196.0/22 | DFN Media | APNIC | ALLOCATED PORTABLE | ● low |
| 141.39.219.0/24 | DFN-MSP | RIPE | LEGACY | ● low |
| 193.174.1.160/28 | DFN-NOC | RIPE | ASSIGNED PA | ● low |
| 193.174.1.224/27 | DFN-MSP | RIPE | ASSIGNED PA | ● low |
| 193.174.10.0/26 | DFN-GTS | RIPE | ASSIGNED PA | ● low |
| 193.174.247.0/24 | DFN-NOC | RIPE | ASSIGNED PA | ● low |
| 194.94.252.0/24 | DFN-GS-S | RIPE | ASSIGNED PA | ● low |
| 194.95.252.0/24 | DFN-GS-B | RIPE | ASSIGNED PA | ● low |
| 195.37.61.224/27 | DFN-NOC | RIPE | ASSIGNED PA | ● low |
| 195.37.186.32/28 | DFN-SOC | RIPE | ASSIGNED PA | ● low |
| 195.37.191.32/28 | DFN-SGS | RIPE | ASSIGNED PA | ● low |
| 195.37.209.100/30 | DFN-NOC | RIPE | ASSIGNED PA | ● low |
| 195.37.209.112/30 | DFN-NOC | RIPE | ASSIGNED PA | ● low |
| 195.37.232.224/28 | DFN-NOC | RIPE | ASSIGNED PA | ● low |
| 208.99.24.0/22 | DFN Systems | ARIN | DIRECT ALLOCATION | ● low |
| 212.201.255.0/24 | DFN-LAB | RIPE | ASSIGNED PA | ● low |
| 2001:638:823::/48 | DFN-GTS | RIPE | ASSIGNED | ● low |
| 2400:7c40::/32 | DFN Media | APNIC | ALLOCATED PORTABLE | ● low |
Network trust
what's this?
RPKI hygiene: A
how networks compare →
95.0%
of checked blocks have valid RPKI ROA coverage
(19 of 20)
Possible discrepancies (7)
These blocks are registered to DFN Systems but cryptographically authorized for a different, unrelated network (2 distinct holders) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.
| 2001:638:823::/48 /48 | authorized for AS680 — Verein zur Foerderung eines Deutschen Forschungsnetzes e.V. |
| 103.81.196.0/22 /22 | authorized for AS55492 — Dhaka Fiber Net Ltd |
| 193.174.247.0/24 /24 | authorized for AS680 — Verein zur Foerderung eines Deutschen Forschungsnetzes e.V. |
| 141.39.219.0/24 /24 | authorized for AS680 — Verein zur Foerderung eines Deutschen Forschungsnetzes e.V. |
| 194.95.252.0/24 /24 | authorized for AS680 — Verein zur Foerderung eines Deutschen Forschungsnetzes e.V. |
| 194.94.252.0/24 /24 | authorized for AS680 — Verein zur Foerderung eines Deutschen Forschungsnetzes e.V. |
| 212.201.255.0/24 /24 | authorized for AS1275 — Verein zur Foerderung eines Deutschen Forschungsnetzes e.V. |
NIC Handles
AD816-AP
APNIC-HM
AS53266
CJG33-ARIN
CJG33-ARIN
CJG33-ARIN
DFN-LIR-MNT
DMA6-AP
DMA6-AP
DUMY-RIPE
DUMY-RIPE
GREEN-158
+2 more