$ query “AS203919” --type=asn → 1 result(s)

AS203919 · LUMADOCK-AS

LUMADOCK LTD

AS203919 is run by LUMADOCK LTD and is an enterprise stub network, established in the United Kingdom in 2025. The system announces 4 864 IPv4 addresses. Its primary geographic footprint is in the United States, with additional presence in the Netherlands and Finland, and smaller footprints in 4 additional countries. Prefix announcements for this AS were recently updated. No IPv6 support — it's 2026, just saying.

Basic Information

Country
🇬🇧 United Kingdom
Category
Business
Network Role
Stub Network
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
November 07, 2025
Last Changed
August 01, 2026
Last Seen
August 09, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
19 / 18
IPv6 Prefixes (raw / aggregated)
0 / 0
IPv4 Addresses
4 864
Largest IPv4 Prefix
/23 (512 addresses)
Geolocated Countries
🇺🇸 United States (2 048 IPs), 🇳🇱 Netherlands (1 792 IPs), 🇫🇮 Finland (1 024 IPs) and 4 more
Prefix Changed
August 04, 2026

Reputation

Reputation
Good — 5 flagged IPs out of 4 864 total (0.10%)

Connectivity Summary

Upstream Providers
4 upstreams providing transit
Degree
4 unique BGP neighbors
Reach
0 networks in customer cone

Upstream Providers (4)

Prefix Lists

IPv4 Prefixes (19 total)

  • 5.10.250.0/23 (512 addresses (/23 prefix))
  • 38.7.145.0/24 (256 addresses (/24 prefix))
  • 38.19.198.0/24 (256 addresses (/24 prefix))
  • 38.79.154.0/24 (256 addresses (/24 prefix))
  • 38.124.152.0/24 (256 addresses (/24 prefix))
  • 38.133.142.0/24 (256 addresses (/24 prefix))
  • 38.143.19.0/24 (256 addresses (/24 prefix))
  • 45.43.166.0/24 (256 addresses (/24 prefix))
  • 45.135.36.0/24 (256 addresses (/24 prefix))
  • 80.91.65.0/24 (256 addresses (/24 prefix))
  • 80.91.79.0/24 (256 addresses (/24 prefix))
  • 80.91.86.0/24 (256 addresses (/24 prefix))
  • 80.91.88.0/24 (256 addresses (/24 prefix))
  • 83.97.114.0/24 (256 addresses (/24 prefix))
  • 154.13.149.0/24 (256 addresses (/24 prefix))
  • 154.43.62.0/24 (256 addresses (/24 prefix))
  • 154.46.30.0/24 (256 addresses (/24 prefix))
  • 185.200.244.0/24 (256 addresses (/24 prefix))