Calibour Limited

Data as of 2026-08-09
BGP inherited
Cluster stats
Netblocks12 · 513 IPv4 addresses
IPv6 9 prefixes (largest 2a0d:d906::/32)
Registered in Germany (3) · Netherlands (2)
Cluster ID217864505
RegistryBGP
Customersfind customers using this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
Shared handles clustered on 27 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

7 weekly snapshots · JSON
16 +4 netblocks since 2026-07-05
2026-07-05 peak 16 2026-08-09

IP Ranges (12)

⬇ export CSV
CIDR Org name Registry Status Confidence
45.86.153.0/24 Calibour Limited RIPE ASSIGNED PA ● high
150.251.32.0/24 Calibour Limited BGP ANNOUNCED ● high
185.1.167.153/32 Calibour Limited PEERINGDB ASSIGNED ● high
2001:7f8:f2:e1:0:20:950:1/128 Calibour Limited PEERINGDB ASSIGNED ● high
2a0d:d906::/32 Calibour Limited BGP ANNOUNCED ● high
2a0f:6284:f00::/40 Calibour Limited BGP ANNOUNCED ● high
2a0f:6284:1200::/40 Calibour Limited BGP ANNOUNCED ● high
2a0f:85c1:8d0::/44 Calibour Limited BGP ANNOUNCED ● high
2a10:ccc0:100::/44 Calibour Limited BGP ANNOUNCED ● high
2a14:67c3:2ae::/48 Calibour Limited BGP ANNOUNCED ● high
2a14:c380:360::/44 Calibour Limited BGP ANNOUNCED ● high
2a14:c380:700::/40 Calibour Limited BGP ANNOUNCED ● high

IPv6 ranges (9)

CIDR
2a0d:d906::/32
2a0f:6284:1200::/40
2a0f:6284:f00::/40
2a14:c380:700::/40
2a0f:85c1:8d0::/44
2a10:ccc0:100::/44
2a14:c380:360::/44
2a14:67c3:2ae::/48
2001:7f8:f2:e1:0:20:950:1/128

Network trust

what's this?
RPKI hygiene: A how networks compare →
100.0% of checked blocks have valid RPKI ROA coverage (16 of 16)
Possible discrepancies (4)

These blocks are registered to Calibour Limited 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.

2a0d:d906::/32 /32 authorized for AS214929 — Lukas Wenzl trading as LastResponse
2a0d:d906::/32 /32 authorized for AS214929 — Lukas Wenzl trading as LastResponse
150.251.32.0/24 /24 authorized for AS211344 — RTM Networks B.V.
150.251.32.0/24 /24 authorized for AS211344 — RTM Networks B.V.

NIC Handles

AS200950 AS200950 AS211344 AS214929 CALIBOUR-MNT CALIBOUR-MNT CLBR-RIPE DUMY-RIPE DUMY-RIPE FUMOFUMO-MNT HYEHOST-MNT HYEHOST-MNT +15 more