Column

ODVR statistics

Resolver instances - Statistics of daily QPS averages for each resolver instance during the last 30 days before June 10, 2026

Server Max QPS Min QPS Trend Average
b-01 2 834 1 689 2 289
r-01 2 793 1 692 2 286
b-03 2 710 1 697 2 253
b-04 1 926 1 011 1 419
s-02 1 990 1 010 1 412
r-02 4 4 4

Return codes - Statistics of daily QPS averages for queries responded with a given RCODE during the last 30 days before June 10, 2026

RCODE Max QPS Min QPS Trend Average
NoError 9 544 5 801 8 024
NXDomain 1 678 994 1 256
ServFail 454 247 317
Refused 53 37 46
NotImp 32 4 16
YXDomain 0 0 0

Query types - Statistics of daily QPS averages for queries with a given QTYPE during the last 30 days before June 10, 2026

QTYPE Max QPS Min QPS Trend Average
A 6 294 4 036 5 321
AAAA 1 732 1 082 1 385
PTR 670 461 597
Other 536 343 449
NS 546 265 345
MX 459 14 161
TXT 216 27 93
CNAME 241 60 91

Top domains

Top 1000 domains by client cardinality magnitude on June 9, 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