Row

Resolvers

Country analysis – daily QPS averages for queries originating from resolvers in a given country during the last 30 days before June 13, 2026

Country Max qps Min qps Trend Average
USA 9 047 7 753 8 385
other 7 454 5 381 6 286
Germany 5 161 3 438 4 113
Czechia 3 642 2 661 3 218
Netherlands 3 422 1 486 1 915
Singapore 2 175 1 412 1 795
France 1 510 882 1 296
Ireland 1 380 949 1 177
UK 1 278 1 059 1 151
Brazil 1 051 757 908
China 959 600 818
India 904 613 782
Japan 1 446 380 773
Hong Kong SAR China 1 147 429 712
Russia 1 307 453 675
Canada 1 886 358 591

Query type analysis – daily QPS averages for queries with a given QTYPE during the last 30 days before June 13, 2026

QTYPE Max qps Min qps Trend Average
A 21 191 15 919 18 622
NS 7 208 5 148 5 932
AAAA 4 514 3 382 3 925
DS 3 495 2 828 3 197
MX 996 672 860
DNSKEY 591 500 534
TXT 588 345 480
other 513 304 382
SOA 419 253 298

Traffic flows – average distribution of QPS since 2026-06-06

Authoritative servers

Server analysis – daily QPS averages for queries reaching an authoritative server in a given city during the last 30 days before June 13, 2026

City Max QPS Min QPS Trend Average
Frankfurt am Main 8 884 6 603 7 578
Praha 5 936 4 292 5 348
Reston (VA) 5 477 3 952 4 514
Singapore 4 742 3 216 3 938
London 3 637 3 288 3 493
Tokyo 3 516 1 548 2 265
São Paulo 1 897 741 1 545
Seattle (WA) 1 462 992 1 201
Wien 938 523 804
Bratislava 921 547 728
Kyiv 792 431 614
Johannesburg 673 566 612
undisclosed 507 380 461
Milano 526 293 404
Los Angeles (CA) 543 186 288
Sydney 857 96 284
Stockholm 326 255 283
Santiago de Chile 264 205 233

Response code analysis – daily QPS averages for queries responded with a given RCODE during the last 30 days before June 13, 2026

RCODE Max QPS Min QPS Trend Average
NoError 32 630 26 897 30 011
NXDomain 7 157 2 854 4 570
Refused 65 2 18
NotImp 13 0 1
FormErr 1 0 0
ServFail 1 0 0
NotAuth 1 0 0
BADSIG 0 0 0
BADVERS 0 0 0

Row

IP version

Traffic rate by IP version – time series of daily QPS averages for IPv4 and IPv6

Protocol

Traffic rate by transport protocol – time series of daily QPS averages for UDP and TCP

SLD countries

Location of authoritative DNS servers for second-level domains under .cz – countries (as of June 4, 2026)

IPv4
IPv6
Country Domains Servers Domains Servers
Czechia 1 215 042 3 261 1 116 263 1 131
United States 435 839 4 214 404 761 3 313
other 281 874 8 659 243 388 5 112
Italy 264 467 234 261 458 53
Sweden 225 134 169 224 059 97
United Kingdom 192 189 319 161 954 118
Slovakia 147 352 335 162 360 71
Germany 136 033 2 192 77 352 918

SLD networks

Location of authoritative DNS servers for second-level domains under .cz – autonomous systems (as of June 4, 2026)

IPv4
IPv6
AS Providers Domains Servers Domains Servers
AS14061 DigitalOcean, LLC 107 474 156 103 314 67
AS16509 Amazon.com, Inc.  296 286 2 285 278 566 2 076
AS208414 WEDOS Internet 273 614 8 273 607 5
AS24806 INTERNET CZ 234 890 134 230 328 41
AS25234 ACTIVE 24 189 998 5 189 998 5
AS29134 Webglobe 144 424 36 143 778 12
AS31034 Aruba 230 887 39 228 218 12
other other 1 251 563 16 720 960 958 8 595

Catchment areas

Mapping of countries to a destination DNS server that receives most of the traffic from a given country.

DNSSEC

Traffic rate by DNSSEC – time series of daily QPS averages by DNSSEC support
Whether a DNS query supports DNSSEC or not is determined from the EDNS0 flag DNSSEC OK (DO) [RFC 3225].