AS18438Brown Brothers Harriman & Company
United StatesRegistryARINAt a glance
IPv4 prefixes
20
IPv6 prefixes
0
IPv4 addresses
5.1k
IPv6 /64s
0
Upstream graph
The networks AS18438 is seen behind, one and two hops out, drawn from real AS paths.
AS18438Toward the internet core
Networks observed one and two hops upstream of AS18438 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
21
adjacent networks
- Upstreams
- 1048%
- Peers
- 1152%
- Downstreams
- 00%
Networks carrying this one's traffic toward the rest of the internet.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS55002F5, Inc. | US | Peer | 880 | 80 |
| AS174Cogent Communications, LLC | US | Peer | 158 | 79 |
| AS46887Zayo Bandwidth | US | Peer | 144 | 72 |
| AS3356Lumen (Level 3) | US | Peer | 125 | 63 |
| AS54004Cablevision Lightpath LLC | US | Peer | 96 | 80 |
| AS2516KDDI Corporation |  JP | Peer | 80 | 80 |
| AS8220COLT |  GB | Peer | 41 | 41 |
| AS6461Zayo Bandwidth | US | Peer | 39 | 39 |
| AS9141P4 Sp. z o.o. |  PL | Peer | 34 | 17 |
| AS1000LINK AMERICAN | US | Peer | 1 | 1 |
Prefixes
The largest blocks AS18438 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 192.200.1.0/24 | 256 | 80/80 |
| 192.200.2.0/24 | 256 | 80/80 |
| 192.200.3.0/24 | 256 | 80/80 |
| 192.200.4.0/24 | 256 | 80/80 |
| 192.200.5.0/24 | 256 | 80/80 |
| 192.200.6.0/24 | 256 | 80/80 |
| 192.200.7.0/24 | 256 | 80/80 |
| 192.200.8.0/24 | 256 | 80/80 |
| 204.136.16.0/24 | 256 | 79/80 |
| 204.136.19.0/24 | 256 | 80/80 |
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.