Column

ODVR statistics

Resolver instances - Statistics of daily QPS averages for each resolver instance during the last 30 days before September 21, 2025

Server Max QPS Min QPS Trend Average
s-01 3 044 1 930 2 392
b-01 2 922 1 914 2 367
r-01 2 898 1 885 2 353
b-03 2 804 1 819 2 310
s-02 1 715 1 023 1 279
b-02 1 667 1 021 1 255
r-02 1 664 1 037 1 254
b-04 1 613 994 1 244

Return codes - Statistics of daily QPS averages for queries responded with a given RCODE during the last 30 days before September 21, 2025

RCODE Max QPS Min QPS Trend Average
NoError 13 477 8 232 10 736
NXDomain 3 241 1 399 1 792
ServFail 2 556 839 1 543
NotImp 642 118 281
Refused 111 89 102
YXDomain 0 0 0

Query types - Statistics of daily QPS averages for queries with a given QTYPE during the last 30 days before September 21, 2025

QTYPE Max QPS Min QPS Trend Average
A 7 962 5 295 6 842
AAAA 2 488 1 482 1 908
ANY 2 697 577 1 258
NS 3 739 449 960
Other 1 047 724 916
PTR 933 583 747
MX 763 26 246

Top domains

Top 1000 domains by client cardinality magnitude on September 20, 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