Column

ODVR statistics

Resolver instances - Statistics of daily QPS averages for each resolver instance during the last 30 days before December 18, 2025

Server Max QPS Min QPS Trend Average
s-01 2 669 1 678 2 229
r-01 2 691 1 667 2 223
b-01 2 605 1 669 2 201
b-03 2 618 1 660 2 195
s-02 1 503 924 1 251
b-04 1 431 904 1 207
r-02 1 488 890 1 202
b-02 1 409 899 1 196

Return codes - Statistics of daily QPS averages for queries responded with a given RCODE during the last 30 days before December 18, 2025

RCODE Max QPS Min QPS Trend Average
NoError 12 932 8 301 11 407
NXDomain 2 217 1 248 1 526
ServFail 1 168 388 646
NotImp 231 23 87
Refused 48 33 39
YXDomain 0 0 0

Query types - Statistics of daily QPS averages for queries with a given QTYPE during the last 30 days before December 18, 2025

QTYPE Max QPS Min QPS Trend Average
A 8 778 5 394 7 226
AAAA 2 171 1 492 1 883
PTR 994 710 850
Other 836 595 719
NS 631 462 549
ANY 939 94 362
MX 416 27 179
TXT 166 40 73

Top domains

Top 1000 domains by client cardinality magnitude on December 17, 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