Physikalisch-Technische Bundesanstalt
Data as of 2026-07-26
BGP inherited
Cluster stats
| Netblocks | 7 · 66,064 IPv4 addresses |
| IPv6 | 2 prefixes (largest 2003:c0:3841::/48) |
| Cluster ID | 214644951 |
| Registry | RIPE |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 6 shared RIR contact/maintainer handles |
| Registry names | 3 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
Footprint over time
6 weekly snapshots · JSON
7
-1 netblocks since 2026-07-05
2026-07-05
peak 8
2026-07-26
IP Ranges (7)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 141.25.0.0/16 | Physikalisch-Technische Bundesanstalt | RIPE | LEGACY | ● high |
| 192.53.103.0/24 | Physikalisch-Technische Bundesanstalt | RIPE | LEGACY | ● high |
| 192.129.51.0/24 | Physikalisch-Technische Bundesanstalt | RIPE | LEGACY | ● high |
| 87.191.21.136/29 | PHYSIKALISCH-TECHNISCHE-BUNDESANSTALT-BRAUNSCHWEIG-NET | RIPE | ASSIGNED PA | ● low |
| 93.241.40.8/29 | PHYSIKALISCH-TECHNISCHE-BUNDESANSTALT-BERLIN-NET | RIPE | ASSIGNED PA | ● low |
| 2003:c0:3841::/48 | PHYSIKALISCH-TECHNISCHE-BUNDESANSTALT-BRAUNSCHWEIG-NET | RIPE | ASSIGNED | ● low |
| 2003:eb:6037::/48 | PHYSIKALISCH-TECHNISCHE-BUNDESANSTALT-BERLIN-NET | RIPE | ASSIGNED | ● low |
IPv6 ranges (2)
Domains hosted in this network
what's this?Network trust
what's this?
RPKI hygiene: A
how networks compare →
100.0%
of checked blocks have valid RPKI ROA coverage
(7 of 7)
Possible discrepancies (2)
These blocks are registered to Physikalisch-Technische Bundesanstalt but cryptographically authorized for a different, unrelated network (1 distinct holder) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.
| 2003:c0:3841::/48 /48 | authorized for AS3320 — Deutsche Telekom AG |
| 2003:eb:6037::/48 /48 | authorized for AS3320 — Deutsche Telekom AG |
Routed via provider/NREN (3)
These blocks are cryptographically authorized for this organisation's national research & education network or transit provider — expected topology for an institution that routes through it, not a discrepancy.
| 141.25.0.0/16 /16 | routed via AS680 — DFN (Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.) |
| 192.129.51.0/24 /24 | routed via AS680 — DFN (Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.) |
| 192.53.103.0/24 /24 | routed via AS680 — DFN (Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.) |
NIC Handles
DFN-LIR-MNT
DTAG-NIC
DUMY-RIPE
DUMY-RIPE
ORG-PB103-RIPE
RIPE-NCC-LEGACY-MNT