Jakub Witkowski
Data as of 2026-10-11
BGP inherited
This organisation
| Netblocks | 10 · 2,304 IPv4 addresses |
| IPv6 | 1 prefix (largest 2a10:ab80:3ec::/48) |
| Registered in | Poland (6) · Germany (3) |
| Record ID | 248741275 |
| Registry | BGP |
| Customers | see who runs inside this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 9 shared RIR contact/maintainer handles |
| Registry names | 4 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
IP Ranges (10)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 13.141.35.0/24 | Jakub Witkowski | BGP | ANNOUNCED | ● low |
| 13.141.56.0/24 | Jakub Witkowski | BGP | ANNOUNCED | ● low |
| 13.141.64.0/24 | Jakub Witkowski | BGP | ANNOUNCED | ● low |
| 201.3.237.0/24 | Cipher Digital Solutions S.R.L. | BGP | ANNOUNCED | ● low |
| 201.4.72.0/24 | Jakub Witkowski | BGP | ANNOUNCED | ● low |
| 201.4.76.0/24 | GENIUSWEER SAS | BGP | ANNOUNCED | ● low |
| 201.7.19.0/24 | Jakub Witkowski | BGP | ANNOUNCED | ● low |
| 201.7.22.0/24 | Jakub Witkowski | BGP | ANNOUNCED | ● low |
| 201.7.27.0/24 | Cipher Digital Solutions S.R.L. | BGP | ANNOUNCED | ● low |
| 2a10:ab80:3ec::/48 | Jakub-Witkowski | RIPE | ALLOCATED-BY-LIR | ● low |
IPv6 ranges (1)
| CIDR |
|---|
| 2a10:ab80:3ec::/48 |
Footprint over time
3 weekly snapshots · JSON
10
0 netblocks since 2026-09-27
2026-09-27
peak 10
2026-10-11
Network trust
what's this?
RPKI hygiene: A
how networks compare →
100.0%
of checked blocks have valid RPKI ROA coverage
(10 of 10)
Possible discrepancies (6)
These blocks are registered to Jakub Witkowski 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.
| 2a10:ab80:3ec::/48 /48 | authorized for AS214891 — Denis Aleksandrovich Iakovlev |
| 201.3.237.0/24 /24 | authorized for AS200954 — Andrey Shemanin |
| 201.7.19.0/24 /24 | authorized for AS200954 — Andrey Shemanin |
| 201.7.22.0/24 /24 | authorized for AS200954 — Andrey Shemanin |
| 201.7.27.0/24 /24 | authorized for AS200954 — Andrey Shemanin |
| 201.4.76.0/24 /24 | authorized for AS200954 — Andrey Shemanin |
NIC Handles
AS198831
AS200954
AS215133
AS218537
DUMY-RIPE
DUMY-RIPE
IPBNB-MNT
lir-ru-prefixlabs-1-MNT
netutils-mnt