This data call returns the total amount of prefixes announced by a given ASN per subnet size and IP version.
https://stat.ripe.net/data/prefix-size-distribution/data.<format>?<parameters> 
e.g. https://stat.ripe.net/data/prefix-size-distribution/data.json?resource=AS3333&time=2011-12-05T12:00:00
Parameters
|
Key
|
Value
|
Info
|
Required
|
|
resource
|
AS for the query
|
-
|
YES
|
|
timestamp
|
ISO8601 or Unix timestamp
|
default: now - 2 days
|
NO
|
|
min_peers_seeing
|
integer
|
Minimum number of RIS peers seeing the prefix for it to be included in the results.
Excludes low-visibility/localized announcements.
|
NO (default: 10)
|
Output
Data
|
Key
|
Info
|
|
ipv4
|
contains prefix sizes of all IPv4 prefixes of the queried ASN
|
|
ipv6
|
contains prefix sizes of all IPv6 prefixes of the queried ASN
|
|
count
|
total number of prefixes with the prefix size denoted by size
|
|
size
|
Prefix size
|
|
resource
|
holds the AS number the result is based on
|
|
query_time
|
holds the time of the snapshot the result is based on
|
Example
"data": {
"ipv4": [
{
"count": 1,
"size": 21
},
{
"count": 5,
"size": 23
}
],
"ipv6": [
{
"count": 1,
"size": 42
},
{
"count": 1,
"size": 48
}
],
"resource": "3333",
"query_time": "2011-12-05T12:00:00"
}