Piotr Chrzanowski

Data as of 2026-08-16

BGP inherited

Cluster stats

Netblocks	14
IPv6	14 prefixes (largest 2a14:7581:3900::/40)
Cluster ID	222465602
Registry	BGP
Customers	find customers using this network →

Evidence & provenance ?

Attribution	BGP parent (inherited)
Shared handles	clustered on 8 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

8 weekly snapshots · JSON

15 +3 netblocks since 2026-07-05

2026-07-05 peak 15 2026-08-16

⬇ export CSV

CIDR	Org name	Registry	Status	Confidence
2001:7f8:ca:1:0:19:9763:1/128	Piotr Chrzanowski	PEERINGDB	ASSIGNED	● high
2001:7f8:10f::3:c53:1630/128	Piotr Chrzanowski	PEERINGDB	ASSIGNED	● high
2001:7f8:134::78/128	Piotr Chrzanowski	PEERINGDB	ASSIGNED	● high
2602:fed2:fff:ffff::38/128	Piotr Chrzanowski	PEERINGDB	ASSIGNED	● high
2a0e:8f01:1000:11::157/128	Piotr Chrzanowski	PEERINGDB	ASSIGNED	● high
2a0e:8f01:1000:24::21d/128	Piotr Chrzanowski	PEERINGDB	ASSIGNED	● high
2a14:7581:3941::/48	Piotr Chrzanowski	BGP	ANNOUNCED	● high
2a14:7581:3961::/48	Piotr Chrzanowski	BGP	ANNOUNCED	● high
2a14:7581:3962::/48	Piotr Chrzanowski	BGP	ANNOUNCED	● high
2a14:7581:3966::/48	Piotr Chrzanowski	BGP	ANNOUNCED	● high
2a14:7581:3977::/48	Piotr Chrzanowski	BGP	ANNOUNCED	● high
2a14:7581:39ff::/48	Piotr Chrzanowski	BGP	ANNOUNCED	● high
2a14:7581:3900::/40	Piotr Chrzanowski	RIPE	ALLOCATED-BY-LIR	● low
2a14:7581:394f::/48	Piotr Chrzanowski	RIPE	ALLOCATED-BY-LIR	● low

what's this?

RPKI hygiene: C how networks compare →

53.3% of checked blocks have valid RPKI ROA coverage (8 of 15)

No discrepancies found among checked blocks.

AS199763 AS199763 DUMY-RIPE DUMY-RIPE NoPKT-MNT ORG-PC205-RIPE PCELA-MNT PCELA-MNT