subnet.im

AS199524Gcore S.A.

LuxembourgRegistryRIPE NCCTypeContent

As of 11th November 2026, AS199524 (Gcore S.A.), a content network registered in Luxembourg with RIPE NCC, originates 448 IPv4 prefixes covering 125k addresses and 136 IPv6 prefixes. By IPv4 address space that makes it the 2,116th-largest of the 80,747 networks we see originating IPv4, and the 5th-largest of 104 in Luxembourg. It is seen behind 120 upstream networks, most often AS1299 (Arelion (fka. Telia Carrier)) and AS6939 (Hurricane Electric LLC), and in front of 639 downstream networks. 93% of its announcements have a valid RPKI ROA; 6 are RPKI-invalid. 98% of its routes reach at least 90% of full-feed peers, and 10 prefixes are also originated by another network.

At a glance

IPv4 prefixes

448

IPv6 prefixes

136

IPv4 addresses

125k

IPv6 /64s

115M

Upstream graph

The networks AS199524 is seen behind, one and two hops out, drawn from real AS paths.

AS199524Toward the internet core
Upstream graph for AS199524: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS199524Gcore S.A.This networkAS174Cogent Communicat…AS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS3491PCCW Global (HK) …AS6939Hurricane Electri…AS13030Init7 (Switzerlan…AS16552Tiggee LLCAS49544i3D.net B.VAS24516Virtutel Pty LtdAS58511Swoop (Anycast Gl…AS20130Depaul UniversityAS132337Axclusive

Networks observed one and two hops upstream of AS199524 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

6,532

adjacent networks

Upstreams
1202%
Peers
5,77388%
Downstreams
63910%

Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 120.

Upstreams of AS199524
NetworkCountryRelationshipPathsVantage pts
AS1299Arelion (fka. Telia Carrier)SEPeer14,806139
AS6939Hurricane Electric LLCUSPeer9,02671
AS3491PCCW Global (HK) Ltd.HKPeer7,828136
AS2914NTT America, Inc.USPeer5,762106
AS174Cogent Communications, LLCUSPeer5,498133
AS3257GTT Communications Inc.USPeer4,33199
AS6453TATA Communications (America) IncUSPeer3,88479
AS3356Lumen (Level 3)USPeer2,278138
AS6762Telecom Italia Sparkle (Seabone)ITPeer1,899102
AS6830Liberty Global Europe Holding B.V.EUPeer1,547138

Prefixes

All 584

The largest blocks AS199524 originates, widest first.

Largest prefixes originated by AS199524
PrefixAddressesVisibility
81.162.208.0/212k54/76
45.158.108.0/221k61/76
69.3.132.0/221k1/76
205.179.220.0/221k76/76
205.179.240.0/221k76/76
205.179.244.0/221k1/76
216.133.104.0/221k1/76
216.133.108.0/221k1/76
5.8.26.0/2351275/76
92.223.10.0/2351276/76

Routing health

How AS199524's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid93.2%544
  • Invalid1.0%6
  • No ROA5.8%34

Propagation

  • Globally propagated90% of full-feed peers or more97.6%570
  • Partially propagated40% to 90%0.9%5
  • Seen by few peersUnder 40%1.5%9

Prefix sizes

IPv4 — 448 prefixes

IPv6 — 136 prefixes

  • /441M × /6479.4%108
  • /4865.5k × /6420.6%28

Recent changes

Announcements that started or stopped since 12th Oct 2026.

22 announced and 31 withdrawn in all; the most recent are shown.

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.