Submitted by admin on Sun, 04/30/2017 - 14:54

Collection Period

This year's collection period took place between April 11 to April 13, 2017. Contributions for the AS112 project were also included.

 participant |       mbytes       | queries_millions 
-------------+--------------------+------------------
 a-root      |            630,941 |         10,766
 afilias     |            497,531 |         11,499
 afrinic     |              3,455 |             86
 as112-yow   |              2,847 |             71
 b-root      |            306,263 |          5,746
 c-root      |            482,157 |         11,961
 cznic       |             88,924 |          2,503
 d-root      |            435,585 |         11,141
 e-root      |            384,083 |          7,744
 eesti       |              1,195 |             36
 f-root      |            276,458 |          6,126
 h-root      |            234,686 |          4,797
 hivane      |              5,372 |            149
 i-root      |            505,405 |         13,747
 j-root      |            582,779 |         13,407
 k-root      |            593,001 |         12,124
 l-root      |            608,025 |         16,674
 m-root      |            402,952 |          7,392
 nethelp     |             12,441 |            146
 niccl       |             22,552 |            464
 switch      |             51,784 |            931
 wide        |             10,074 |            248

Coverage Map

This year's coverage map is located here

Notes

e-root

E-root data appears to have many duplicate pcaps within their nodes - this is not the case. Where there is the appearance of duplicates these files are actually unique and represent the true number of nodes within that directory. For example, lhr/ contains 4 such distinct nodes. A script was used to re-sort these uploads into the proper node names for further processing.

i-root

The I-root data from Autonomica has anonymized source IP addresses due to privacy regulations within the country of that data's origin. UNINETT's data has also been anonymized in the same way.

RIPE-NCC/K.root

For DITL 2017, RIPE NCC uploaded pcap files containing queries arriving at
K-root. During the capture window, 60 K-root servers were active and receiving
queries. The pcap files were rotated every 5 minutes. Most servers sent 600
files each, with the following exceptions:

ns3.nl-ams.k.ripe.net 599
ns1.jp-tyo.k.ripe.net 598
ns2.ir-thr.k.ripe.net 557
ns2.kw-kwi.k.ripe.net 597
ns1.uy-mvd.k.ripe.net 599
ns1.us-ric.k.ripe.net 591
ns1.ca-ott.k.ripe.net 599

This was either because the server was rebooted during the capture window, or
there was a brief network outage resulting in no queries coming to the server
(in which case the pcap file is not rotated after 5 minutes).

SWITCH

This data has been both anonymised as well as contains both queries and answers.

ISC/F.root:

The data does not include two nodes, pao1a and pao1b due to data errors.  Also, the ISC-Cloudfare instances were not captured this year.

ICANN/l.root

Some nodes could not keep up with the collection thus some will look incomplete or are missing files. Otherwise the data is complete.

Summary Reports

Summary reports for this year's collection may be found here.

Access To Data

DNS-OARC members can access DITL data on the DNS-OARC analysis servers. Please contact the DNS-OARC Admin for more information.