Alsycon B.V.

Data as of 2026-09-27
BGP inherited
This organisation
Netblocks41 · 9,989 IPv4 addresses
IPv6 7 prefixes (largest 2a0e:3980::/29)
Registered in Netherlands (24) · United States (16) · SC (9) · LT (2)
Record ID245448297
RegistryBGP
Customerssee who runs inside this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
Shared handles clustered on 26 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 (41)

⬇ export CSV
CIDR Org name Registry Status Confidence
45.81.22.0/23 Alsycon B.V. RIPE ASSIGNED PA ● high
62.204.50.0/24 Alsycon B.V. BGP ANNOUNCED ● high
77.241.206.130/32 Alsycon AS49870 PEERINGDB ASSIGNED ● high
94.247.136.0/24 Alsycon B.V. RIPE ALLOCATED PA ● high
178.255.217.0/24 Alsycon B.V. RIPE ALLOCATED PA ● high
185.1.160.1/32 Alsycon AS49870 PEERINGDB ASSIGNED ● high
185.1.184.201/32 Alsycon AS49870 PEERINGDB ASSIGNED ● high
185.1.222.233/32 Alsycon AS49870 PEERINGDB ASSIGNED ● high
185.1.223.22/32 Alsycon AS49870 PEERINGDB ASSIGNED ● high
185.228.251.0/24 Alsycon B.V. RIPE ALLOCATED PA ● high
2001:7f8:b7::a504:9870:1/128 Alsycon AS49870 PEERINGDB ASSIGNED ● high
2001:7f8:b7::a504:9870:2/128 Alsycon AS49870 PEERINGDB ASSIGNED ● high
2001:7f8:10f::c2ce:1/128 Alsycon AS49870 PEERINGDB ASSIGNED ● high
2001:7f8:134::c8/128 Alsycon AS49870 PEERINGDB ASSIGNED ● high
2a0e:3ec0::/29 Alsycon B.V. BGP ANNOUNCED ● high
2a11:8280::/29 Alsycon B.V. BGP ANNOUNCED ● high
2.56.167.0/24 Alsycon B.V. BGP ANNOUNCED ● medium
45.80.36.0/23 Alsycon B.V. BGP ANNOUNCED ● medium
45.95.144.0/23 Alsycon B.V. BGP ANNOUNCED ● medium
45.95.146.0/24 Alsycon B.V. BGP ANNOUNCED ● medium
45.95.147.0/24 Alsycon B.V. BGP ANNOUNCED ● medium
45.140.222.0/23 Alsycon B.V. BGP ANNOUNCED ● medium
77.83.240.0/24 Alsycon B.V. BGP ANNOUNCED ● medium
89.116.202.0/24 Alsycon B.V. BGP ANNOUNCED ● medium
89.190.156.0/24 Alsycon B.V. BGP ANNOUNCED ● medium
89.190.159.0/24 Alsycon B.V. BGP ANNOUNCED ● medium
160.119.64.0/22 Alsycon B.V. BGP ANNOUNCED ● medium
160.119.69.0/24 Alsycon B.V. BGP ANNOUNCED ● medium
160.119.71.0/24 Alsycon B.V. BGP ANNOUNCED ● medium
160.119.74.0/24 Alsycon B.V. BGP ANNOUNCED ● medium
160.119.75.0/24 Alsycon B.V. BGP ANNOUNCED ● medium
160.119.76.0/23 Alsycon B.V. BGP ANNOUNCED ● medium
160.119.78.0/24 Alsycon B.V. BGP ANNOUNCED ● medium
169.239.130.0/24 Alsycon B.V. BGP ANNOUNCED ● medium
185.224.128.0/24 Alsycon B.V. BGP ANNOUNCED ● medium
194.50.16.0/24 Alsycon B.V. BGP ANNOUNCED ● medium
196.61.64.0/22 Alsycon B.V. BGP ANNOUNCED ● medium
212.107.12.0/24 Alsycon B.V. BGP ANNOUNCED ● medium
2a0e:3980::/29 Alsycon B.V. BGP ANNOUNCED ● medium
45.95.144.0/22 Alsycon B.V. RIPE ALLOCATED PA ● low
185.142.130.0/24 Alsycon-BV RIPE ALLOCATED PA ● low

IPv6 ranges (7)

CIDR
2a0e:3980::/29
2a0e:3ec0::/29
2a11:8280::/29
2001:7f8:10f::c2ce:1/128
2001:7f8:134::c8/128
2001:7f8:b7::a504:9870:1/128
2001:7f8:b7::a504:9870:2/128

Footprint over time

14 weekly snapshots · JSON
61 0 netblocks since 2026-07-05
2026-07-05 peak 64 2026-09-27

Network trust

what's this?
RPKI hygiene: C how networks compare →
75.4% of checked blocks have valid RPKI ROA coverage (46 of 61)
Possible discrepancies (4)

These blocks are registered to Alsycon 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.

77.83.240.0/24 /24 authorized for AS7759 — Oster Communications, Inc.
194.50.16.0/24 /24 authorized for AS62068 — SpectraIP B.V.
77.83.240.0/24 /24 authorized for AS7759 — Oster Communications, Inc.
194.50.16.0/24 /24 authorized for AS62068 — SpectraIP B.V.

NIC Handles

AB39270-RIPE AB39270-RIPE ACRO31910-RIPE AS208911 AS49305 AS49870 AS49870 Alsycon-BV Alsycon-BV Alsycon-BV DUMY-RIPE DUMY-RIPE +14 more