Column

ODVR statistics

Resolver instances - Statistics of daily QPS averages for each resolver instance during the last 30 days before May 16, 2026

Server Max QPS Min QPS Trend Average
r-01 3 198 1 751 2 389
b-01 3 152 1 706 2 367
b-03 3 105 1 711 2 356
s-01 3 156 512 2 245
s-02 1 762 1 025 1 410
b-04 1 753 977 1 401
r-02 1 719 389 1 339
b-02 1 798 202 1 327

Return codes - Statistics of daily QPS averages for queries responded with a given RCODE during the last 30 days before May 16, 2026

RCODE Max QPS Min QPS Trend Average
NoError 14 590 6 023 10 635
NXDomain 2 156 1 232 1 702
ServFail 3 713 247 845
NotImp 1 156 2 166
Refused 78 32 58
YXDomain 0 0 0

Query types - Statistics of daily QPS averages for queries with a given QTYPE during the last 30 days before May 16, 2026

QTYPE Max QPS Min QPS Trend Average
A 9 025 4 282 6 988
AAAA 2 742 1 119 1 992
PTR 849 452 697
ANY 4 488 6 648
Other 758 335 489
NS 563 262 443
MX 629 20 302
DNSKEY 419 105 184
TXT 180 36 81

Top domains

Top 1000 domains by client cardinality magnitude on May 15, 2026

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