240e:438:c000::/40
At a glance
Subnets
/40 block
Visibility
61 of 63 vantage points
RPKI
Registry
CNAllocated 14th December 2011
AS paths to this prefix
All pathsOne observed path, hop by hop, from the origin out to Sao Paulo.
Seen from Sao Paulo
- Peer of AS140647seen on 137 paths from 137 vantage points
- Peer of AS4809seen on 25,062 paths from 137 vantage points
- Peer of AS23764seen on 29,311 paths from 133 vantage points
- Peer of AS2914seen on 439,175 paths from 6 vantage points
HK
US
FROne path, hop by hop, from the origin outward to the vantage point that saw it. Counts beside each step are how often we see that pair adjacent anywhere in the table, not how often this path was used — BGP carries no traffic figures.
Every path we see
- Amsterdam1406474809237648298This path
- Singapore140647480923764132337This path
- London, UK140647480923764129935280This path
- Sao Paulo140647480923764291435280Shown above
Each row is one path genuinely present in the routing table at our last snapshot, read outward from the origin to the vantage point that saw it. Open a row to follow that one path hop by hop. A heavier line in the graph means more vantage points reach the prefix that same way.
Route visibility
97%
Seen by 61 of 63 full-feed vantage points
Globally propagatedObserved at 4 of our collectors.
What this percentage counts
The denominator counts only full-feed peers — peers carrying a substantially complete routing table at the moment of the snapshot. IXP route-server peers usually feed partial tables and are excluded, because including them would make a normally propagated prefix look as though half the internet could not see it.
It measures how widely an announcement has spread across the networks we can observe. It says nothing about whether the prefix is reachable from any particular place, or how it performs.
Registry and RPKI
- RIR
- APNIC — Asia-Pacific
- Country
- China
- Allocated
- 14th December 2011
- Allocation block
- 240e:400::/22
- Status
- allocated
- Origin validation
- No ROA
No ROA covers this prefix, so RPKI has nothing to say about it either way. This is still the common case for a large share of the routing table.
Prefix hierarchy
Announcements above, below and beside this one in the real routing table.
Left to right is specificity: a shorter mask covering more address space, then this prefix, then the announcements carved out inside it. Only the first few of each are drawn — the tables below list them all.
Covering announcements
| Prefix | Addresses | Origin | Visibility |
|---|---|---|---|
| 240e:438::/30 | 17.2B × /64 | AS4134China Telecom Backbone | 61/63 |
| 240e::/20 | 17.6T × /64 | AS4134China Telecom Backbone | 60/63 |
More specific announcements
Nothing inside this block is announced separately.
Sibling prefixes
No prefix of the same length in the same parent block is announced.
History
- AS14064712th August 2026 — present
Why these dates start where they do
A first-seen date is the first time we saw that origin, not the first time it appeared in BGP. Our history is forward-only with no backfill, so it says nothing about the period before we started collecting — treat the earliest dates with suspicion.
Routing data derived from RouteViews MRT archives and public registry data.