AS199524Gcore S.A.
LuxembourgRegistryRIPE NCCTypeContentAs of 26th September 2026, AS199524 (Gcore S.A.), a content network registered in Luxembourg with RIPE NCC, originates 457 IPv4 prefixes covering 129k addresses and 138 IPv6 prefixes. By IPv4 address space that makes it the 2,048th-largest of the 79,516 networks we see originating IPv4, and the 5th-largest of 104 in Luxembourg. It is seen behind 113 upstream networks, most often AS1299 (Arelion (fka. Telia Carrier)) and AS3491 (PCCW Global (HK) Ltd.), and in front of 632 downstream networks. 91% of its announcements have a valid RPKI ROA; 6 are RPKI-invalid. 99% of its routes reach at least 90% of full-feed peers, and 5 prefixes are also originated by another network.
At a glance
IPv4 prefixes
IPv6 prefixes
IPv4 addresses
IPv6 /64s
Upstream graph
The networks AS199524 is seen behind, one and two hops out, drawn from real AS paths.
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
6,828
adjacent networks
- Upstreams
- 1132%
- Peers
- 6,08389%
- Downstreams
- 6329%
Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 113.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS1299Arelion (fka. Telia Carrier) |  SE | Peer | 15,595 | 145 |
| AS3491PCCW Global (HK) Ltd. |  HK | Peer | 9,038 | 143 |
| AS6939Hurricane Electric LLC |  US | Peer | 8,862 | 73 |
| AS174Cogent Communications, LLC | US | Peer | 6,366 | 139 |
| AS2914NTT America, Inc. | US | Peer | 5,362 | 103 |
| AS3257GTT Communications Inc. | US | Peer | 5,262 | 103 |
| AS6453TATA Communications (America) Inc | US | Peer | 4,525 | 85 |
| AS3356Lumen (Level 3) | US | Peer | 2,249 | 145 |
| AS6762Telecom Italia Sparkle (Seabone) |  IT | Peer | 1,919 | 98 |
| AS14537Continent 8 LLC | US | Peer | 1,624 | 4 |
Prefixes
All 595The largest blocks AS199524 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 69.3.132.0/22 | 1k | 1/81 |
| 165.217.132.0/22 | 1k | 81/81 |
| 199.115.72.0/22 | 1k | 81/81 |
| 205.179.220.0/22 | 1k | 81/81 |
| 205.179.240.0/22 | 1k | 81/81 |
| 205.179.244.0/22 | 1k | 1/81 |
| 216.133.104.0/22 | 1k | 1/81 |
| 216.133.108.0/22 | 1k | 1/81 |
| 5.8.26.0/23 | 512 | 80/81 |
| 74.112.76.0/23 | 512 | 81/81 |
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
- Valid90.9%541
- Invalid1.0%6
- No ROA8.1%48
Propagation
- Globally propagated90% of full-feed peers or more99.0%589
- Partially propagated40% to 90%0.0%0
- Seen by few peersUnder 40%1.0%6
Prefix sizes
IPv4 — 457 prefixes
IPv6 — 138 prefixes
- /441M × /6479.0%109
- /4865.5k × /6421.0%29
Recent changes
Announcements that started or stopped since 27th Aug 2026.
- Announced185.101.138.0/2424th Sept 2026
- Announced2a03:90c0:270::/4424th Sept 2026
- Announced45.82.162.0/2424th Sept 2026
- Announced79.133.108.0/2424th Sept 2026
- Withdrawn185.101.138.0/2424th Sept 2026
- Withdrawn2a03:90c0:270::/4424th Sept 2026
- Withdrawn45.82.162.0/2424th Sept 2026
- Withdrawn79.133.108.0/2424th Sept 2026
- Withdrawn85.234.64.127/3224th Sept 2026
- Announced85.234.64.127/3223rd Sept 2026
- Withdrawn2a03:90c0:6b0::/4422nd Sept 2026
- Withdrawn78.111.103.0/2422nd Sept 2026
12 announced and 10 withdrawn in all; the most recent are shown.
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.