Column

ODVR statistics

Resolver instances - Statistics of daily QPS averages for each resolver instance during the last 30 days before November 16, 2025

Server Max QPS Min QPS Trend Average
r-01 2 713 1 738 2 224
s-01 2 763 1 722 2 216
b-01 2 717 1 729 2 212
b-03 2 694 1 701 2 194
s-02 1 520 964 1 179
r-02 1 448 856 1 149
b-04 1 395 850 1 122
b-02 1 403 847 1 119

Return codes - Statistics of daily QPS averages for queries responded with a given RCODE during the last 30 days before November 16, 2025

RCODE Max QPS Min QPS Trend Average
NoError 12 916 8 244 10 810
NXDomain 1 797 1 122 1 494
ServFail 2 439 553 881
NotImp 646 67 151
Refused 136 33 80
YXDomain 0 0 0

Query types - Statistics of daily QPS averages for queries with a given QTYPE during the last 30 days before November 16, 2025

QTYPE Max QPS Min QPS Trend Average
A 8 038 5 358 6 930
AAAA 2 008 1 514 1 766
Other 1 663 1 092 1 356
PTR 1 024 697 851
ANY 2 781 334 704
MX 309 22 95

Top domains

Top 1000 domains by client cardinality magnitude on November 15, 2025

DNS magnitude is a number in the range 0–10 expressing “popularity” of a domain based on client cardinality (number of unique client IP addresses). For details see Mayrhofer et al. (2000).

Column

Transport protocols

Daily QPS averages for transport protocols

IP versions

Daily QPS averages for IPv4 and IPv6