AS21509Apollo Management, L.P.
United StatesRegistryARINAs of 27th September 2026, AS21509 (Apollo Management, L.P.), a network registered in the United States with ARIN, originates 10 IPv4 prefixes covering 2.6k addresses. By IPv4 address space that makes it the 23,024th-largest of the 79,536 networks we see originating IPv4, and the 5,800th-largest of 18,430 in the United States. It is seen behind 6 upstream networks, most often AS3356 (Lumen (Level 3)) and AS3910 (Lumen (ex Qwest Europe)). 10% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.
At a glance
IPv4 prefixes
IPv6 prefixes
IPv4 addresses
IPv6 /64s
Upstream graph
The networks AS21509 is seen behind, one and two hops out, drawn from real AS paths.
Networks observed one and two hops upstream of AS21509 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
14
adjacent networks
- Upstreams
- 643%
- Peers
- 857%
- Downstreams
- 00%
Networks carrying this one's traffic toward the rest of the internet.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS3356Lumen (Level 3) | US | Peer | 455 | 82 |
| AS3910Lumen (ex Qwest Europe) | US | Peer | 164 | 82 |
| AS3257GTT Communications Inc. | US | Peer | 116 | 44 |
| AS9498Bharti Airtel Ltd. |  IN | Peer | 52 | 52 |
| AS17762Tata Teleservices Maharashtra Ltd | IN | Peer | 30 | 30 |
| AS5580GTT Communications (APAC) |  NL | Peer | 2 | 2 |
Prefixes
The largest blocks AS21509 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 49.143.235.0/24 | 256 | 82/82 |
| 63.151.42.0/24 | 256 | 82/82 |
| 63.151.43.0/24 | 256 | 82/82 |
| 63.233.105.0/24 | 256 | 82/82 |
| 63.234.240.0/24 | 256 | 82/82 |
| 65.119.216.0/24 | 256 | 82/82 |
| 67.132.92.0/24 | 256 | 82/82 |
| 89.167.135.0/24 | 256 | 82/82 |
| 208.86.104.0/24 | 256 | 81/82 |
| 208.86.105.0/24 | 256 | 82/82 |
Routing health
How AS21509'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
- Valid10.0%1
- Invalid0.0%0
- No ROA90.0%9
Propagation
- Globally propagated90% of full-feed peers or more100.0%10
- Partially propagated40% to 90%0.0%0
- Seen by few peersUnder 40%0.0%0
Prefix sizes
IPv4 — 10 prefixes
Recent changes
Announcements that started or stopped since 28th Aug 2026.
No announcement by AS21509 started or stopped in this period.
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.