Jakub Witkowski

Data as of 2026-11-08
BGP inherited
This organisation
Netblocks8 · 1,792 IPv4 addresses
IPv6 1 prefix (largest 2a10:ab80:3ec::/48)
Registered in Germany (3) · Poland (2) · United Arab Emirates (1) · Sweden (1)
Record ID266696261
RegistryBGP
Customerssee who runs inside this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
Shared handles clustered on 10 shared RIR contact/maintainer handles
Registry names 2 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

IP Ranges (8)

⬇ export CSV
CIDR Org name Registry Status Confidence
13.141.35.0/24 Jakub Witkowski BGP ANNOUNCED ● low
13.141.64.0/24 Jakub Witkowski BGP ANNOUNCED ● low
31.57.12.0/24 Jakub Witkowski BGP ANNOUNCED ● low
77.216.4.0/24 Jakub Witkowski BGP ANNOUNCED ● low
130.78.11.0/24 Jakub Witkowski BGP ANNOUNCED ● low
191.44.90.0/24 Jakub Witkowski BGP ANNOUNCED ● low
201.4.72.0/24 Jakub Witkowski 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

7 weekly snapshots · JSON
8 -2 netblocks since 2026-09-27
2026-09-27 peak 10 2026-11-08

Network trust

what's this?
RPKI hygiene: A how networks compare →
100.0% of checked blocks have valid RPKI ROA coverage (8 of 8)
Possible discrepancies (4)

These blocks are registered to Jakub Witkowski but cryptographically authorized for a different, unrelated network (4 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
31.57.12.0/24 /24 authorized for AS9304 — HGC Global Communications Limited
191.44.90.0/24 /24 authorized for AS201861 — Aleksejs Pinajevs
130.78.11.0/24 /24 authorized for AS219498 — Artem Kovalchuk

NIC Handles

AS201861 AS215133 AS219498 AS23061 AS9304 DUMY-RIPE DUMY-RIPE IPBNB-MNT lir-ru-prefixlabs-1-MNT netutils-mnt