AS209377 — FOURCONSULT 4Consult B.V.

AS209377 announces 1 IPv4 prefixes covering 1,024 addresses and 1 IPv6 prefixes.

About this network

The AS handle FOURCONSULT is held by 4Consult B.V.

What it's used for

• The address space carries corporate network operations, evidenced by the netname NL-4CONSULT-20190123 and registrant details listing "4Consult B.V. - Network Operations Center".
• The inventory consists of 1024 IPv4 addresses within a single /22 prefix and 20 IPv6 prefixes, with only 2 observed neighbours, indicating a small-scale internal corporate estate rather than a transit or access provider.
• Traffic from this AS represents the internal network infrastructure of a Dutch consulting firm, supporting office workers and business operations.

Notable

• The registrant 4Consult B.V. matches the AS holder and announcer, confirming consistent ownership.
• The address inventory is compact, comprising one IPv4 block and a set of IPv6 prefixes, typical for a small business network.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 152.89.4.0/22
• 2a09:2c40::/29

Upstream networks

• AS24785 Broadband Hosting B.V.
• AS41960 Nextpertise B.V.

Adjacent networks

• AS24785 Broadband Hosting B.V.
• AS41960 Nextpertise B.V.

Routing security

• RPKI: 13 valid, 0 invalid and 0 not-found announcements; 13 ROAs.
• ASPA: none published.
• IRR: 15% of announcements registered; 2 route objects.
• Listed in as-sets: AS-CAVEO, AS-JOINTTRANSIT, AS-JOINTTRANSIT-IPV6, AS-NL-IX-RS, AS-OPENPEERING, AS41960:AS-NEXTPERTISE.

Internet exchanges

• Neutral Internet Exchange — Amsterdam, Netherlands