CTNET B.V.

Data as of 2026-10-25

BGP inherited

This organisation

Netblocks	6 · 1,281 IPv4 addresses
IPv6	1 prefix (largest 2a13:bdc0::/29)
Registered in	Netherlands (5) · Spain (1) · India (1)
Record ID	255619800
Registry	APNIC
Customers	see who runs inside this network →

Evidence & provenance ?

Attribution	BGP parent (inherited)
Shared handles	clustered on 11 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 (6)

⬇ export CSV

CIDR	Org name	Registry	Status	Confidence
185.45.148.0/24	CTNET B.V.	BGP	ANNOUNCED	● high
193.189.89.0/24	CTNET B.V.	BGP	ANNOUNCED	● high
2a13:bdc0::/29	CTNET B.V.	BGP	ANNOUNCED	● high
45.131.181.0/24	CTNET B.V.	RIPE	ALLOCATED PA	● low
80.73.159.224/32	CTNET-CT-TIC	RIPE	ASSIGNED PA	● low
163.227.102.0/23	CTNET	APNIC	ALLOCATED PORTABLE	● low

IPv6 ranges (1)

CIDR
2a13:bdc0::/29

Footprint over time

18 weekly snapshots · JSON

9 -2 netblocks since 2026-07-05

2026-07-05 peak 11 2026-10-25

Network trust

what's this?

RPKI hygiene: C how networks compare →

77.8% of checked blocks have valid RPKI ROA coverage (7 of 9)

Possible discrepancies (7)

These blocks are registered to CTNET B.V. 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.

2a13:bdc0::/29 /29	authorized for AS43366 — OSSO B.V.
2a13:bdc0::/29 /29	authorized for AS43366 — OSSO B.V.
45.131.181.0/24 /24	authorized for AS60781 — LeaseWeb Netherlands B.V.
193.189.89.0/24 /24	authorized for AS43366 — OSSO B.V.
185.45.148.0/24 /24	authorized for AS43366 — OSSO B.V.
185.45.148.0/24 /24	authorized for AS43366 — OSSO B.V.
193.189.89.0/24 /24	authorized for AS43366 — OSSO B.V.

NIC Handles

AS203135 CTNET-MNT CTNET-MNT DUMY-RIPE DUMY-RIPE MAINT-IN-IRINN MC2091-AP ORG-CB270-RIPE REDCTNET-MNT RIPE-NCC-HM-MNT VS573-AP