Justin Harth
Data as of 2026-07-26
BGP inherited
Cluster stats
| Netblocks | 13 · 1,536 IPv4 addresses |
| IPv6 | 7 prefixes (largest 2a09:3f00:3100::/40) |
| Cluster ID | 213487848 |
| Registry | BGP |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 20 shared RIR contact/maintainer handles |
| Registry names | 4 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
Footprint over time
6 weekly snapshots · JSON
22
+3 netblocks since 2026-07-05
2026-07-05
peak 23
2026-07-26
IP Ranges (13)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 2.56.247.0/24 | Justin Harth | BGP | ANNOUNCED | ● high |
| 5.175.164.0/24 | Justin Harth trading as NexoSystems IT-Solutions | RIPE | ASSIGNED PA | ● high |
| 5.175.179.0/24 | Justin Harth | BGP | ANNOUNCED | ● high |
| 5.175.245.0/24 | Justin Harth | BGP | ANNOUNCED | ● high |
| 5.231.31.0/24 | Justin Harth | BGP | ANNOUNCED | ● high |
| 45.142.104.0/24 | Justin Harth | BGP | ANNOUNCED | ● high |
| 2a09:3f00:3100::/48 | Justin Harth | BGP | ANNOUNCED | ● high |
| 2a09:3f00:3101::/48 | Justin Harth | BGP | ANNOUNCED | ● high |
| 2a09:3f00:3102::/48 | Justin Harth | BGP | ANNOUNCED | ● high |
| 2a09:3f00:3103::/48 | Justin Harth | BGP | ANNOUNCED | ● high |
| 2a14:7c0:1300::/40 | Justin Harth | BGP | ANNOUNCED | ● high |
| 2a00:2381:c6a4::/48 | JUSTIN-M | RIPE | AGGREGATED-BY-LIR | ● low |
| 2a09:3f00:3100::/40 | Justin Harth | RIPE | ALLOCATED-BY-LIR | ● low |
IPv6 ranges (7)
Network trust
what's this?
RPKI hygiene: A
how networks compare →
95.5%
of checked blocks have valid RPKI ROA coverage
(21 of 22)
Possible discrepancies (6)
These blocks are registered to Justin Harth but cryptographically authorized for a different, unrelated network (3 distinct holders) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.
| 2a00:2381:c6a4::/48 /48 | authorized for AS2856 — British Telecommunications Limited |
| 45.142.104.0/24 /24 | authorized for AS49581 — Ferdinand Zink trading as Tube-Hosting |
| 5.175.164.0/24 /24 | authorized for AS12586 — GHOSTnet GmbH |
| 5.175.164.0/24 /24 | authorized for AS12586 — GHOSTnet GmbH |
| 45.142.104.0/24 /24 | authorized for AS49581 — Ferdinand Zink trading as Tube-Hosting |
| 5.175.179.0/24 /24 | authorized for AS12586 — GHOSTnet GmbH |
NIC Handles
ACRO43385-RIPE
AS12586
AS213850
BTNET-MNT
DUMY-RIPE
DUMY-RIPE
ETG-MNT
ETG-MNT
GHOSTNET-MNT
GHOSTNET-MNT
JH-IP-MNT
JH-IP-MNT
+8 more