CTNET B.V.
Cluster stats
Netblocks11
All fragments 31 blocks across 16 clusters
Cluster ID191778545
RegistryAPNIC
Customersfind customers using this network →
Evidence & provenance ?
Attribution unresolved
Shared handles clustered on 13 shared RIR contact/maintainer handles
Registry names 6 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works

IP Ranges (11)

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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
185.45.148.0/24 CTNET B.V. RIPE ALLOCATED PA ● low
193.189.89.0/24 CTNET B.V. RIPE ALLOCATED PA ● low
194.108.150.0/24 CTNET-CZ RIPE ASSIGNED PA ● low
195.56.168.128/28 CTNET-HU RIPE ASSIGNED PA ● low
2a13:bdc0::/29 CTNET B.V. RIPE ALLOCATED-BY-RIR ● low

Network trust

what's this?
RPKI hygiene: B how networks compare →
81.8% of checked blocks have valid RPKI ROA coverage (9 of 11)
Possible discrepancies (8)

These blocks are registered to CTNET B.V. 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.

2a13:bdc0::/29 /29 authorized for AS43366 — OSSO B.V.
2a13:bdc0::/29 /29 authorized for AS43366 — OSSO B.V.
194.108.150.0/24 /24 authorized for AS13036 — T-Mobile Czech Republic a.s.
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 AS3340-MNT CES-IP-MNT CTNET-MNT CTNET-MNT DUMY-RIPE DUMY-RIPE MAINT-IN-IRINN MC2091-AP ORG-CB270-RIPE REDCTNET-MNT RIPE-NCC-HM-MNT +1 more