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Built-in Measurements

Whenever a host connects a RIPE Atlas probe, it automatically starts executing a set of pre-defined measurements. In our terminology these are called "built-in measurements". The probe's network capabilities determine if these measurements are scheduled over IPv4, IPv6 or both.

The set of built-in measurements contain ping, traceroute, DNS, SSL/TLS and some HTTP types, mostly towards well-known targets such as DNS root servers, but also towards some of the RIPE Atlas infrastructure components.

This page describes what measurements are scheduled, and how one can access the results of these.

Accessing the Results

The host for a particular probe can access the results of the built-in measurements of their own probe(s) via the Built-in Measurements tab on the probe status page. One can find a Log Downloads section at the bottom of the page.

The same data is also accessible via the "result" section of the measurement REST API as well as the streaming API.

Definitions and ID Space Layout for Built-In Measurements

Every measurement has a measurement ID, which is unique to that measurement in the system. The following table lists the general layout of the measurement ID space. Note that the last two digits, the "offsets", are explained in the next table.

Measurement range Measurement ID Meaning / Target Frequency
1000 - 2999 Ping
10xx IPv4 ping 240 seconds
20xx IPv6 ping 240 seconds
5000 - 6999 Traceroute
50xx IPv4 traceroute 1800 seconds
5051 topology4.dyndns.atlas.ripe.net (multi-target, ICMP) 900 seconds
5151 topology4.dyndns.atlas.ripe.net (multi-target, UDP) 900 seconds
60xx IPv6 traceroute 1800 seconds
6052 topology6.dyndns.atlas.ripe.net (multi-target, ICMP) 900 seconds
6152 topology6.dyndns.atlas.ripe.net (multi-target, UDP) 900 seconds
7000 - 7999 Probe connect/disconnect events
7000 Probe connect/disconnect events N/A
10000 - 10999 IPv4 DNS SOA and anycast
100xx IPv4 UDP DNS SOA 1800 seconds
101xx IPv4 TCP DNS SOA 1800 seconds
102xx IPv4 UDP DNS version.bind 43200 seconds
103xx IPv4 UDP DNS hostname.bind 240 seconds
104xx IPv4 UDP DNS id.server 1800 seconds
105xx IPv4 UDP DNS version.server 43200 seconds
11000 - 11999 IPv6 DNS SOA and anycast
110xx IPv6 UDP DNS SOA 1800 seconds
111xx IPv6 TCP DNS SOA 1800 seconds
112xx IPv6 UDP DNS version.bind 43200 seconds
113xx IPv6 UDP DNS hostname.bind 240 seconds
114xx IPv6 UDP DNS id.server 1800 seconds
115xx IPv6 UDP DNS version.server 43200 seconds
12000 - 12999 IPv4 HTTP
12023 IPv4 http://www.ripe.net/favicon.ico 900 seconds
12027 IPv4 http://ip-echo.ripe.net/ 3600 seconds
13000 - 13999 IPv6 HTTP
13023 IPv6 http://www.ripe.net/favicon.ico 900 seconds
13027 IPv6 http://ip-echo.ripe.net/ 3600 seconds
14000 - 14999 IPv4 SSLCert / TLSCert
14001 https://www.ripe.net/ 43200 seconds
14002 https://atlas.ripe.net/ 43200 seconds
15000 - 15999 IPv6 SSLCert / TLSCert
15001 https://www.ripe.net/ 43200 seconds
15002 https://atlas.ripe.net/ 43200 seconds
30000 - 30999 DNS TLDs
30001 DNS A using probe resolvers: random domains 600 seconds
30002 DNS A using probe resolvers: popular domains 600 seconds
1 million+ User-Defined Measurements

Measurement Offsets

Destination name Measurement Offset Ping (freqency: 240) Traceroute (frequency: 1800) DNS
a.root-servers.net 9 IPv4 + IPv6 IPv4 + IPv6 IPv4 + IPv6
b.root-servers.net 10 IPv4 + IPv6 IPv4 + IPv6 IPv4 + IPv6
c.root-servers.net 11 IPv4 + IPv6 IPv4 + IPv6 IPv4 + IPv6
d.root-servers.net 12 IPv4 + IPv6 IPv4 + IPv6 IPv4 + IPv6
e.root-servers.net 13 IPv4 + IPv6 IPv4 + IPv6 IPv4 + IPv6
f.root-servers.net 4 IPv4 + IPv6 IPv4 + IPv6 IPv4 + IPv6
g.root-servers.net 14 (not responding) IPv4 + IPv6 IPv4 + IPv6
h.root-servers.net 15 IPv4 + IPv6 IPv4 + IPv6 IPv4 + IPv6
i.root-servers.net 5 IPv4 + IPv6 IPv4 + IPv6 IPv4 + IPv6
j.root-servers.net 16 IPv4 + IPv6 IPv4 + IPv6 IPv4 + IPv6
k.root-servers.net 1 IPv4 + IPv6 IPv4 + IPv6 IPv4 + IPv6
l.root-servers.net 8 IPv4 + IPv6 IPv4 + IPv6 IPv4 + IPv6
m.root-servers.net 6 IPv4 + IPv6 IPv4 + IPv6 IPv4 + IPv6
ctr-ams02.atlas.ripe.net 30 IPv4 + IPv6 IPv4 + IPv6 N/A
ctr-ams03.atlas.ripe.net 31 IPv4 + IPv6 IPv4 + IPv6 N/A
ctr-ewr01.atlas.ripe.net 29 IPv4 + IPv6 IPv4 + IPv6 N/A
ctr-fnc01.atlas.ripe.net 28 IPv4 + IPv6 IPv4 + IPv6 N/A
ctr-nue13.atlas.ripe.net 17 IPv4 + IPv6 IPv4 + IPv6 N/A
ctr-nue17.atlas.ripe.net 19 IPv4 + IPv6 IPv4 + IPv6 N/A
ctr-sin02.atlas.ripe.net 27 IPv4 + IPv6 IPv4 + IPv6 N/A