Row

Resolvers

Country analysis – daily QPS averages for queries originating from resolvers in a given country during the last 30 days before September 4, 2026

Country Max qps Min qps Trend Average
USA 12 319 10 323 11 305
other 7 922 6 573 7 240
Germany 4 549 4 074 4 329
Czechia 3 500 2 331 3 049
Netherlands 3 095 1 718 2 295
Singapore 2 190 1 609 1 938
Brazil 2 007 1 369 1 625
China 1 738 798 1 260
France 1 288 902 1 079
UK 1 168 965 1 070
Ireland 1 243 660 967
Russia 1 351 618 794
Canada 2 685 440 794
India 987 661 791
Hong Kong SAR China 988 487 691
Italy 860 439 535

Query type analysis – daily QPS averages for queries with a given QTYPE during the last 30 days before September 4, 2026

QTYPE Max qps Min qps Trend Average
A 22 894 19 698 21 305
NS 7 931 6 065 6 928
AAAA 4 898 4 142 4 552
DS 4 271 3 590 3 982
MX 1 025 629 819
DNSKEY 614 541 584
TXT 684 394 515
other 429 296 367
SOA 401 304 346

Traffic flows – average distribution of QPS since 2026-08-28

Authoritative servers

Server analysis – daily QPS averages for queries reaching an authoritative server in a given city during the last 30 days before September 4, 2026

City Max QPS Min QPS Trend Average
Frankfurt am Main 7 491 5 887 6 995
Reston (VA) 8 015 6 246 6 934
Praha 7 031 5 085 6 047
Singapore 5 060 3 877 4 403
London 3 310 2 833 3 059
São Paulo 2 731 2 265 2 509
Tokyo 2 387 1 665 1 979
Wien 1 808 938 1 283
Seattle (WA) 1 356 1 060 1 159
Johannesburg 1 287 978 1 083
Kyiv 1 292 552 803
Sydney 932 519 721
Bratislava 695 452 599
Stockholm 627 475 539
Santiago de Chile 598 348 461
undisclosed 493 124 440
Milano 723 178 407
Los Angeles (CA) 645 222 401

Response code analysis – daily QPS averages for queries responded with a given RCODE during the last 30 days before September 4, 2026

RCODE Max QPS Min QPS Trend Average
NoError 38 644 33 410 35 871
NXDomain 6 439 2 836 3 881
Refused 71 2 18
ServFail 2 0 0
FormErr 0 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 September 3, 2026)

IPv4
IPv6
Country Domains Servers Domains Servers
Czechia 1 221 865 3 217 1 126 154 1 121
United States 441 641 4 197 414 513 3 316
other 293 985 8 628 260 334 5 177
Italy 266 386 227 263 433 51
Sweden 224 761 164 223 716 94
United Kingdom 200 390 323 163 034 125
Slovakia 148 014 333 152 467 75
Germany 140 349 2 222 80 345 904

SLD networks

Location of authoritative DNS servers for second-level domains under .cz – autonomous systems (as of September 3, 2026)

IPv4
IPv6
AS Providers Domains Servers Domains Servers
AS14061 DigitalOcean, LLC 108 677 161 104 604 68
AS16509 Amazon.com, Inc.  300 854 2 281 285 434 2 076
AS208414 WEDOS Internet 280 312 11 280 303 9
AS24806 INTERNET CZ 236 925 129 232 540 41
AS25234 ACTIVE 24 189 879 5 189 879 5
AS29134 Webglobe 144 683 40 144 082 12
AS31034 Aruba 233 073 40 230 440 12
other other 1 269 017 16 644 969 529 8 640

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].