$ 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, based in Luxembourg since 2012. The system announces a solid 126 976 IPv4 addresses, and supports IPv6. Its primary geographic footprint is in the United States, with additional presence in Luxembourg and Germany, and smaller footprints in 50 additional countries. This AS has recently updated its prefix announcements.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • #10 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
August 06, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
455 / 321
IPv6 Prefixes (raw / aggregated)
136 / 53
IPv4 Addresses
126 976
Largest IPv4 Prefix
/21 (2 048 addresses)
Largest IPv6 Prefix
/41
Geolocated Countries
🇺🇸 United States (55 808 IPs), 🇱🇺 Luxembourg (41 728 IPs), 🇩🇪 Germany (14 592 IPs) and 50 more
Prefix Changed
August 06, 2026

Reputation

Reputation
Good — 7 flagged IPs out of 126 976 total (0.01%)
Open Proxies
3 known open proxies in this network

Connectivity Summary

Upstream Providers
47 upstreams providing transit
Peers
5 045 networks exchanging traffic without transit
Downstream Customers
89 downstreams buying transit
Unclassified
11 unclassified BGP neighbors
Degree
5 192 unique BGP neighbors
Reach
2 982 networks in customer cone

Upstream Providers (47)

  • AS174 — COGENT (Tier-1 transit)
  • AS3356 — LEVEL3 (Tier-1 transit)
  • AS137409 — GSLNETWORKS-AS-AP
  • AS9002 — RETN-AS
  • AS1299 — TWELVE99 (Tier-1 transit)
  • AS37100 — SEACOM-AS
  • AS3257 — GTT-BACKBONE (Tier-1 transit)
  • AS52320 — GLOBENET-CABOS-SUBMARINOS
  • AS2914 — NTT-DATA-2914 (Tier-1 transit)
  • AS8529 — OMANTEL-AS
  • and 37 more

Prefix Lists

IPv4 Prefixes (455 total)

  • 92.223.16.0/21 (2 048 addresses (/21 prefix))
  • 205.179.240.0/21 (2 048 addresses (/21 prefix))
  • 216.133.104.0/21 (2 048 addresses (/21 prefix))
  • 82.158.112.0/21 (2 048 addresses (/21 prefix))
  • 92.223.96.0/22 (1 024 addresses (/22 prefix))
  • 92.223.116.0/22 (1 024 addresses (/22 prefix))
  • 85.234.68.0/22 (1 024 addresses (/22 prefix))
  • 199.115.72.0/22 (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))
  • 205.179.220.0/22 (1 024 addresses (/22 prefix))
  • 81.28.12.0/22 (1 024 addresses (/22 prefix))
  • 185.249.132.0/22 (1 024 addresses (/22 prefix))
  • 85.234.72.0/22 (1 024 addresses (/22 prefix))
  • 92.223.124.0/22 (1 024 addresses (/22 prefix))
  • 69.3.132.0/22 (1 024 addresses (/22 prefix))
  • 209.102.252.0/22 (1 024 addresses (/22 prefix))
  • 95.85.92.0/22 (1 024 addresses (/22 prefix))
  • 109.61.44.0/22 (1 024 addresses (/22 prefix))
  • 140.235.48.0/22 (1 024 addresses (/22 prefix))
  • 165.217.132.0/22 (1 024 addresses (/22 prefix))
  • 5.188.132.0/22 (1 024 addresses (/22 prefix))
  • 169.155.124.0/22 (1 024 addresses (/22 prefix))
  • 184.170.200.0/22 (1 024 addresses (/22 prefix))
  • 62.112.216.0/23 (512 addresses (/23 prefix))
  • 92.223.120.0/23 (512 addresses (/23 prefix))
  • 188.208.32.0/23 (512 addresses (/23 prefix))
  • 185.244.208.0/23 (512 addresses (/23 prefix))
  • 5.252.26.0/23 (512 addresses (/23 prefix))
  • 185.188.144.0/23 (512 addresses (/23 prefix))
  • 185.67.126.0/23 (512 addresses (/23 prefix))
  • 185.12.242.0/23 (512 addresses (/23 prefix))
  • 192.108.254.0/23 (512 addresses (/23 prefix))
  • 192.135.112.0/23 (512 addresses (/23 prefix))
  • 169.155.122.0/23 (512 addresses (/23 prefix))
  • 5.188.126.0/23 (512 addresses (/23 prefix))
  • 165.217.130.0/23 (512 addresses (/23 prefix))
  • 162.213.60.0/23 (512 addresses (/23 prefix))
  • 162.120.2.0/23 (512 addresses (/23 prefix))
  • 158.62.206.0/23 (512 addresses (/23 prefix))
  • 192.135.118.0/23 (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))
  • 109.61.124.0/23 (512 addresses (/23 prefix))
  • 109.61.122.0/23 (512 addresses (/23 prefix))
  • 45.82.162.0/23 (512 addresses (/23 prefix))
  • 193.57.88.0/23 (512 addresses (/23 prefix))
  • 109.61.38.0/23 (512 addresses (/23 prefix))

IPv6 Prefixes (136 total)

  • 2a03:90c0:480::/41
  • 2a03:90c0:80::/41
  • 2a03:90c0:100::/41
  • 2a03:90c0:380::/41
  • 2a03:90c0:500::/42
  • 2a03:90c0:40::/42
  • 2a03:90c0:180::/42
  • 2a03:90c0:2c0::/42
  • 2a03:90c0:5c0::/42
  • 2a03:90c0:6c0::/42
  • 2a03:90c0:240::/42
  • 2a03:90c0:300::/42
  • 2a03:90c0:700::/42
  • 2a03:90c0:ffe0::/43
  • 2a03:90c0:280::/43
  • 2a03:90c0:740::/43
  • 2a03:90c0:360::/43
  • 2a03:90c0:780::/43
  • 2a03:90c0:6a0::/43
  • 2a03:90c0:420::/43
  • 2a03:90c0:1e0::/43
  • 2a03:90c0:5a0::/43
  • 2a03:90c0:540::/43
  • 2a03:90c0:20::/43
  • 2a03:90c0:560::/44
  • 2a03:90c0:7c0::/44
  • 2a03:90c0:590::/44
  • 2a03:90c0:460::/44
  • 2a03:90c0:1d0::/44
  • 2a03:90c0:610::/44
  • 2a03:90c0:640::/44
  • 2a03:90c0:660::/44
  • 2a03:90c0:690::/44
  • 2a03:90c0:400::/44
  • 2a03:90c0:340::/44
  • 2a03:90c0:2a0::/44
  • 2a03:90c0:220::/44
  • 2a03:90c0:770::/44
  • 2a03:90c0:210::/44
  • 2a03:90c0:10::/44
  • 2a03:90c0:7e0::/44
  • 2a03:90c0:800::/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
  • 2a03:90c0:8885::/48
  • 2a03:90c0:8886::/48