$ query “AS199524” --type=asn → 1 result(s)

AS199524 · GCORE

G-Core Labs S.A.

AS199524 is operated by G-Core Labs S.A. and serves as a major transit provider, registered in Luxembourg since 2012. The system announces a solid 122 368 IPv4 addresses, and supports IPv6. Most of its address space is geolocated to the United States, with additional presence in Luxembourg and Germany, and smaller footprints in 50 additional countries.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • #12 by Degree — Top 100 by unique BGP neighbor count
  • #1 in Luxembourg — Top 10 by reach within country

Basic Information

Country
🇱🇺 Luxembourg
Category
Internet Service Provider
Network Role
Major Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
December 10, 2012
Last Changed
March 04, 2026
Last Seen
October 21, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
453 / 319
IPv6 Prefixes (raw / aggregated)
136 / 50
IPv4 Addresses
122 368
Largest IPv4 Prefix
/21 (2 048 addresses)
Largest IPv6 Prefix
/40
Geolocated Countries
🇺🇸 United States (33 792 IPs), 🇱🇺 Luxembourg (23 296 IPs), 🇩🇪 Germany (7 168 IPs) and 50 more
Prefix Changed
October 07, 2026

Reputation

Reputation
Good — 13 flagged IPs out of 122 368 total (0.01%)
Open Proxies
3 known open proxies in this network

Connectivity Summary

Upstream Providers
46 upstreams providing transit
Peers
4 943 networks exchanging traffic without transit
Downstream Customers
91 downstreams buying transit
Unclassified
17 unclassified BGP neighbors
Degree
5 097 unique BGP neighbors
Reach
136 networks in customer cone

Upstream Providers (46)

  • AS3356 — LEVEL3 (Tier-1 transit)
  • AS174 — COGENT-174 (Tier-1 transit)
  • AS137409 — GSLNETWORKS-AS-AP
  • AS9002 — RETN-AS
  • AS1299 — TWELVE99 (Tier-1 transit)
  • AS20473 — AS-VULTR
  • AS37100 — SEACOM-AS
  • AS3257 — GTT-BACKBONE (Tier-1 transit)
  • AS2914 — NTT-DATA-2914 (Tier-1 transit)
  • AS52320 — GLOBENET-CABOS-SUBMARINOS
  • and 36 more

Prefix Lists

IPv4 Prefixes (453 total)

  • 82.158.112.0/21 (2 048 addresses (/21 prefix))
  • 92.223.16.0/21 (2 048 addresses (/21 prefix))
  • 5.188.132.0/22 (1 024 addresses (/22 prefix))
  • 81.28.12.0/22 (1 024 addresses (/22 prefix))
  • 85.234.68.0/22 (1 024 addresses (/22 prefix))
  • 85.234.72.0/22 (1 024 addresses (/22 prefix))
  • 92.223.24.0/22 (1 024 addresses (/22 prefix))
  • 92.223.44.0/22 (1 024 addresses (/22 prefix))
  • 92.223.96.0/22 (1 024 addresses (/22 prefix))
  • 92.223.116.0/22 (1 024 addresses (/22 prefix))
  • 92.223.124.0/22 (1 024 addresses (/22 prefix))
  • 95.85.92.0/22 (1 024 addresses (/22 prefix))
  • 109.61.16.0/22 (1 024 addresses (/22 prefix))
  • 109.61.36.0/22 (1 024 addresses (/22 prefix))
  • 109.61.44.0/22 (1 024 addresses (/22 prefix))
  • 165.217.132.0/22 (1 024 addresses (/22 prefix))
  • 184.170.200.0/22 (1 024 addresses (/22 prefix))
  • 185.249.132.0/22 (1 024 addresses (/22 prefix))
  • 199.115.72.0/22 (1 024 addresses (/22 prefix))
  • 205.179.220.0/22 (1 024 addresses (/22 prefix))
  • 205.179.240.0/22 (1 024 addresses (/22 prefix))
  • 209.102.252.0/22 (1 024 addresses (/22 prefix))
  • 5.8.26.0/23 (512 addresses (/23 prefix))
  • 5.8.92.0/23 (512 addresses (/23 prefix))
  • 5.101.222.0/23 (512 addresses (/23 prefix))
  • 5.188.94.0/23 (512 addresses (/23 prefix))
  • 5.188.126.0/23 (512 addresses (/23 prefix))
  • 5.189.202.0/23 (512 addresses (/23 prefix))
  • 5.252.26.0/23 (512 addresses (/23 prefix))
  • 45.67.210.0/23 (512 addresses (/23 prefix))
  • 45.80.212.0/23 (512 addresses (/23 prefix))
  • 45.82.30.0/23 (512 addresses (/23 prefix))
  • 45.82.100.0/23 (512 addresses (/23 prefix))
  • 45.82.162.0/23 (512 addresses (/23 prefix))
  • 62.112.216.0/23 (512 addresses (/23 prefix))
  • 62.112.222.0/23 (512 addresses (/23 prefix))
  • 66.248.194.0/23 (512 addresses (/23 prefix))
  • 74.112.76.0/23 (512 addresses (/23 prefix))
  • 78.111.104.0/23 (512 addresses (/23 prefix))
  • 78.111.108.0/23 (512 addresses (/23 prefix))
  • 80.93.210.0/23 (512 addresses (/23 prefix))
  • 80.93.214.0/23 (512 addresses (/23 prefix))
  • 80.240.104.0/23 (512 addresses (/23 prefix))
  • 80.240.112.0/23 (512 addresses (/23 prefix))
  • 82.117.224.0/23 (512 addresses (/23 prefix))
  • 82.158.124.0/23 (512 addresses (/23 prefix))
  • 85.90.192.0/23 (512 addresses (/23 prefix))
  • 85.234.76.0/23 (512 addresses (/23 prefix))
  • 85.234.80.0/23 (512 addresses (/23 prefix))
  • 85.234.86.0/23 (512 addresses (/23 prefix))

IPv6 Prefixes (136 total)

  • 2a03:90c0:300::/40
  • 2a03:90c0:80::/41
  • 2a03:90c0:100::/41
  • 2a03:90c0:480::/41
  • 2a03:90c0:40::/42
  • 2a03:90c0:180::/42
  • 2a03:90c0:240::/42
  • 2a03:90c0:2c0::/42
  • 2a03:90c0:500::/42
  • 2a03:90c0:5c0::/42
  • 2a03:90c0:6c0::/42
  • 2a03:90c0:700::/42
  • 2a03:90c0:20::/43
  • 2a03:90c0:1e0::/43
  • 2a03:90c0:280::/43
  • 2a03:90c0:420::/43
  • 2a03:90c0:540::/43
  • 2a03:90c0:5a0::/43
  • 2a03:90c0:740::/43
  • 2a03:90c0:780::/43
  • 2a03:90c0:ffe0::/43
  • 2a03:90c0:10::/44
  • 2a03:90c0:1d0::/44
  • 2a03:90c0:210::/44
  • 2a03:90c0:220::/44
  • 2a03:90c0:2a0::/44
  • 2a03:90c0:400::/44
  • 2a03:90c0:460::/44
  • 2a03:90c0:560::/44
  • 2a03:90c0:590::/44
  • 2a03:90c0:610::/44
  • 2a03:90c0:640::/44
  • 2a03:90c0:660::/44
  • 2a03:90c0:690::/44
  • 2a03:90c0:6a0::/44
  • 2a03:90c0:770::/44
  • 2a03:90c0:7c0::/44
  • 2a03:90c0:7e0::/44
  • 2a03:90c0:820::/44
  • 2a03:90c0:8888::/45
  • 2a03:90c0:9994::/46
  • 2a03:90c0:999c::/46
  • 2a03:90c0:8880::/47
  • 2a03:90c0:9990::/47
  • 2a03:90c0:9998::/47
  • 2a03:90c0:450::/48
  • 2a03:90c0:8885::/48
  • 2a03:90c0:8886::/48
  • 2a03:90c0:9992::/48
  • 2a03:90c0:999a::/48