Row

Resolvers

Country analysis – daily QPS averages for queries originating from resolvers in a given country during the last 30 days before May 22, 2026

Country Max qps Min qps Trend Average
USA 12 748 6 899 8 664
other 8 717 5 382 6 900
Germany 4 127 3 433 3 829
Czechia 3 745 2 491 3 226
Netherlands 3 491 1 466 2 094
Singapore 2 242 1 417 1 841
Ireland 1 584 870 1 145
France 1 524 794 1 112
UK 1 278 811 1 111
Japan 2 009 399 1 028
Sweden 1 386 234 925
Hong Kong SAR China 1 936 452 922
China 1 026 751 913
Brazil 999 341 789
India 868 583 767
Russia 936 470 556

Query type analysis – daily QPS averages for queries with a given QTYPE during the last 30 days before May 22, 2026

QTYPE Max qps Min qps Trend Average
A 23 118 16 383 19 317
NS 7 114 5 148 6 328
AAAA 4 972 3 172 3 937
DS 3 454 2 682 3 100
MX 1 745 675 977
TXT 1 412 345 576
DNSKEY 575 426 508
SOA 1 142 224 395
other 373 253 324

Traffic flows – average distribution of QPS since 2026-05-15

Authoritative servers

Server analysis – daily QPS averages for queries reaching an authoritative server in a given city during the last 30 days before May 22, 2026

City Max QPS Min QPS Trend Average
Frankfurt am Main 10 213 6 603 8 483
Praha 5 936 4 259 5 145
Singapore 7 885 3 216 4 608
Reston (VA) 5 477 3 822 4 428
London 3 600 2 698 3 351
Tokyo 5 133 1 548 2 804
São Paulo 1 796 0 1 300
Seattle (WA) 1 364 910 1 116
Wien 1 051 523 847
Bratislava 993 319 824
Johannesburg 850 459 638
Kyiv 1 125 442 629
undisclosed 520 390 463
Milano 943 293 403
Los Angeles (CA) 646 187 302
Stockholm 343 252 283
Santiago de Chile 306 189 239
Sydney 249 96 151

Response code analysis – daily QPS averages for queries responded with a given RCODE during the last 30 days before May 22, 2026

RCODE Max QPS Min QPS Trend Average
NoError 34 621 25 085 29 788
NXDomain 10 650 3 226 6 022
Refused 58 2 17
FormErr 1 0 0
ServFail 1 0 0
NotAuth 0 0 0
NotImp 0 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 May 14, 2026)

IPv4
IPv6
Country Domains Servers Domains Servers
Czechia 1 213 890 3 262 1 115 063 1 126
United States 435 329 4 240 404 065 3 320
other 279 057 8 661 220 720 5 105
Italy 263 942 239 260 915 51
Sweden 224 798 163 223 725 92
United Kingdom 190 918 324 161 526 118
Slovakia 147 612 342 164 497 69
Germany 135 401 2 183 77 080 925

SLD networks

Location of authoritative DNS servers for second-level domains under .cz – autonomous systems (as of May 14, 2026)

IPv4
IPv6
AS Providers Domains Servers Domains Servers
AS14061 DigitalOcean, LLC 107 154 158 103 000 66
AS16509 Amazon.com, Inc.  296 246 2 286 278 437 2 081
AS208414 WEDOS Internet 273 468 8 273 461 5
AS24806 INTERNET CZ 234 358 135 229 798 40
AS25234 ACTIVE 24 189 752 5 189 752 5
AS29134 Webglobe 144 485 45 143 734 12
AS31034 Aruba 230 368 39 227 686 9
other other 1 249 513 16 738 935 257 8 588

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].