Jakub Witkowski

Data as of 2026-10-18

BGP inherited

This organisation

Netblocks	7 · 1,536 IPv4 addresses
IPv6	1 prefix (largest 2a10:ab80:3ec::/48)
Registered in	Germany (3) · United Arab Emirates (1) · Israel (1) · Poland (1)
Record ID	250234006
Registry	BGP
Customers	see who runs inside this network →

Evidence & provenance ?

Attribution	BGP parent (inherited)
Shared handles	clustered on 8 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 (7)

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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
31.57.12.0/24	Jakub Witkowski	BGP	ANNOUNCED	● low
79.182.27.0/24	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

4 weekly snapshots · JSON

7 -3 netblocks since 2026-09-27

2026-09-27 peak 10 2026-10-18

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 (3)

These blocks are registered to Jakub Witkowski 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.

2a10:ab80:3ec::/48 /48	authorized for AS214891 — Denis Aleksandrovich Iakovlev
31.57.12.0/24 /24	authorized for AS9304 — HGC Global Communications Limited
79.182.27.0/24 /24	authorized for AS399359 — Maxcy Network LLC

NIC Handles

AS215133 AS399359 AS9304 DUMY-RIPE DUMY-RIPE IPBNB-MNT lir-ru-prefixlabs-1-MNT netutils-mnt