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

AS199524 · GCORE

G-Core Labs S.A.

AS199524 is owned by G-Core Labs S.A. and is a major transit provider, registered in Luxembourg since 2012. The system announces a solid 128 768 IPv4 addresses, and supports IPv6. Its primary geographic footprint is in the United States, with additional presence in Luxembourg and Singapore, and smaller footprints in 50 additional countries. This AS's prefix announcements have been recently modified.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • #8 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
June 22, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
462 / 324
IPv6 Prefixes (raw / aggregated)
138 / 53
IPv4 Addresses
128 768
Largest IPv4 Prefix
/21 (2 048 addresses)
Largest IPv6 Prefix
/41
Geolocated Countries
🇺🇸 United States (57 856 IPs), 🇱🇺 Luxembourg (43 008 IPs), 🇸🇬 Singapore (12 288 IPs) and 50 more
Prefix Changed
June 23, 2026

Reputation

Reputation
Good — 11 flagged IPs out of 128 768 total (0.01%)
Open Proxies
3 known open proxies in this network

Connectivity Summary

Upstream Providers
48 upstreams providing transit
Peers
5 136 networks exchanging traffic without transit
Downstream Customers
79 downstreams buying transit
Unclassified
13 unclassified BGP neighbors
Degree
5 276 unique BGP neighbors
Reach
7 824 networks in customer cone

Upstream Providers (48)

  • AS174 — COGENT (Tier-1 transit)
  • AS3356 — LEVEL3 (Tier-1 transit)
  • AS137409 — GSLNETWORKS-AS-AP
  • AS9002 — RETN-AS
  • AS1299 — TWELVE99 (Tier-1 transit)
  • AS8220 — COLT
  • AS37100 — SEACOM-AS
  • AS3257 — GTT-BACKBONE (Tier-1 transit)
  • AS2914 — NTT-DATA-2914 (Tier-1 transit)
  • AS8529 — OMANTEL-AS
  • and 38 more

Prefix Lists

IPv4 Prefixes (462 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))
  • 81.28.12.0/22 (1 024 addresses (/22 prefix))
  • 92.223.124.0/22 (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))
  • 92.223.52.0/22 (1 024 addresses (/22 prefix))
  • 205.179.220.0/22 (1 024 addresses (/22 prefix))
  • 185.249.132.0/22 (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))
  • 85.234.72.0/22 (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))
  • 5.188.132.0/22 (1 024 addresses (/22 prefix))
  • 165.217.132.0/22 (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))
  • 95.85.68.0/23 (512 addresses (/23 prefix))
  • 92.223.120.0/23 (512 addresses (/23 prefix))
  • 5.189.202.0/23 (512 addresses (/23 prefix))
  • 5.252.26.0/23 (512 addresses (/23 prefix))
  • 185.244.208.0/23 (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))
  • 192.135.118.0/23 (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))
  • 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))
  • 5.188.126.0/23 (512 addresses (/23 prefix))
  • 109.61.124.0/23 (512 addresses (/23 prefix))
  • 45.82.162.0/23 (512 addresses (/23 prefix))
  • 109.61.122.0/23 (512 addresses (/23 prefix))
  • 193.57.88.0/23 (512 addresses (/23 prefix))

IPv6 Prefixes (138 total)

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