Level Four

LevelFour
Registry
Cluster stats
Netblocks10 · 2,294 IPv4 addresses
Cluster ID210900866
RegistryRIPE
Customersfind customers using this network →
Evidence & provenance ?
Attribution Registry record
Shared handles clustered on 5 shared RIR contact/maintainer handles
Registry names 2 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works

Footprint over time

5 weekly snapshots · JSON
10 0 netblocks since 2026-07-05
2026-07-05 peak 10 2026-07-19

IP Ranges (10)

⬇ export CSV
CIDR Org name Registry Status Confidence
91.244.224.0/25 Levelfour RIPE ASSIGNED PA ● high
91.244.224.128/25 Levelfour RIPE ASSIGNED PA ● high
37.44.8.0/24 LevelFour RIPE ASSIGNED PA ● low
37.44.9.0/24 LevelFour RIPE ASSIGNED PA ● low
37.44.10.0/24 LevelFour RIPE ASSIGNED PA ● low
37.44.11.0/24 LevelFour RIPE ASSIGNED PA ● low
37.44.12.0/24 LevelFour RIPE ASSIGNED PA ● low
37.44.13.0/24 LevelFour RIPE ASSIGNED PA ● low
37.44.14.0/24 LevelFour RIPE ASSIGNED PA ● low
37.44.15.0/24 LevelFour RIPE ASSIGNED PA ● low

Network trust

what's this?
RPKI hygiene: A how networks compare →
100.0% of checked blocks have valid RPKI ROA coverage (10 of 10)
Possible discrepancies (8)

These blocks are registered to LevelFour but cryptographically authorized for a different, unrelated network (1 distinct holder) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.

37.44.8.0/24 /24 authorized for AS61060 — NXTcom Nederland BV
37.44.15.0/24 /24 authorized for AS61060 — NXTcom Nederland BV
37.44.9.0/24 /24 authorized for AS61060 — NXTcom Nederland BV
37.44.10.0/24 /24 authorized for AS61060 — NXTcom Nederland BV
37.44.11.0/24 /24 authorized for AS61060 — NXTcom Nederland BV
37.44.12.0/24 /24 authorized for AS61060 — NXTcom Nederland BV
37.44.13.0/24 /24 authorized for AS61060 — NXTcom Nederland BV
37.44.14.0/24 /24 authorized for AS61060 — NXTcom Nederland BV

NIC Handles

DUMY-RIPE DUMY-RIPE ORG-LA1534-RIPE TNGNET-MNT nl-xrcnetworks-1-mnt