Theo Holroyd

Data as of 2026-07-26

BGP inherited

Cluster stats

Netblocks	14 · 260 IPv4 addresses
IPv6	9 prefixes (largest 2a11:29c0:3da0::/44)
Registered in	United Kingdom (2) · Netherlands (2)
Cluster ID	213632951
Registry	BGP
Customers	find customers using this network →

Evidence & provenance ?

Attribution	BGP parent (inherited)
Shared handles	clustered on 11 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

6 weekly snapshots · JSON

18 +5 netblocks since 2026-07-05

2026-07-05 peak 18 2026-07-26

⬇ export CSV

CIDR	Org name	Registry	Status	Confidence
5.57.82.45/32	Theo Holroyd	PEERINGDB	ASSIGNED	● high
80.249.213.163/32	Theo Holroyd	PEERINGDB	ASSIGNED	● high
91.198.241.227/32	Theo Holroyd	PEERINGDB	ASSIGNED	● high
151.216.5.0/24	Theo Holroyd	RIPE	ASSIGNED PI	● high
185.1.161.66/32	Theo Holroyd	PEERINGDB	ASSIGNED	● high
2001:678:bb0::/48	Theo Holroyd	RIPE	ASSIGNED PI	● high
2001:7f8:1:0:a500:20:1616:1/128	Theo Holroyd	PEERINGDB	ASSIGNED	● high
2001:7f8:17::3:1390:1/128	Theo Holroyd	PEERINGDB	ASSIGNED	● high
2001:7f8:ca:1:0:20:1616:1/128	Theo Holroyd	PEERINGDB	ASSIGNED	● high
2001:7f8:10f::3:1390:321/128	Theo Holroyd	PEERINGDB	ASSIGNED	● high
2001:7f8:16c:1:0:20:1616:1/128	Theo Holroyd	PEERINGDB	ASSIGNED	● high
2a0c:2f07:ffff::b491/128	Theo Holroyd	PEERINGDB	ASSIGNED	● high
2a0e:f43:3::/48	Theo Holroyd	BGP	ANNOUNCED	● high
2a11:29c0:3da0::/44	Theo Holroyd	RIPE	ALLOCATED-BY-LIR	● high

what's this?

RPKI hygiene: B how networks compare →

88.9% of checked blocks have valid RPKI ROA coverage (16 of 18)

No discrepancies found among checked blocks.

AS201616 AS201616 DUMY-RIPE DUMY-RIPE GRIFON-MNT GRIFON-MNT ORG-TH110-RIPE RIPE-NCC-END-MNT THEOH-MNT THEOH-MNT TNO17-RIPE