Row

Resolvers

Country analysis – daily QPS averages for queries originating from resolvers in a given country during the last 30 days before July 24, 2026

Country Max qps Min qps Trend Average
USA 10 369 8 215 9 413
other 7 983 6 130 6 959
Germany 4 809 3 591 4 045
Czechia 3 676 2 746 3 220
Singapore 2 161 1 670 1 896
Netherlands 2 343 1 411 1 811
Brazil 1 686 1 100 1 424
France 1 369 859 1 086
Ireland 1 475 639 946
UK 1 032 804 943
China 903 720 807
India 1 088 629 783
Russia 1 226 500 678
Hong Kong SAR China 622 422 526
Canada 958 362 509
Poland 638 281 491

Query type analysis – daily QPS averages for queries with a given QTYPE during the last 30 days before July 24, 2026

QTYPE Max qps Min qps Trend Average
A 20 161 17 285 18 717
NS 7 257 5 547 6 171
AAAA 4 562 3 909 4 226
DS 3 780 3 335 3 592
MX 898 612 767
DNSKEY 613 535 572
TXT 607 363 470
other 400 286 347
SOA 441 241 299

Traffic flows – average distribution of QPS since 2026-07-17

Authoritative servers

Server analysis – daily QPS averages for queries reaching an authoritative server in a given city during the last 30 days before July 24, 2026

City Max QPS Min QPS Trend Average
Frankfurt am Main 7 480 5 538 6 539
Praha 6 762 4 499 5 732
Reston (VA) 5 816 4 419 5 148
Singapore 4 458 3 264 3 927
London 3 303 2 754 3 073
São Paulo 2 483 1 847 2 174
Tokyo 2 157 1 660 1 845
Seattle (WA) 1 466 1 030 1 311
Wien 1 331 737 1 017
Johannesburg 1 195 832 938
Bratislava 827 550 669
Kyiv 890 355 632
Sydney 905 519 619
undisclosed 514 387 463
Santiago de Chile 499 259 444
Milano 471 260 367
Stockholm 509 252 354
Los Angeles (CA) 532 196 288

Response code analysis – daily QPS averages for queries responded with a given RCODE during the last 30 days before July 24, 2026

RCODE Max QPS Min QPS Trend Average
NoError 34 528 29 748 32 556
NXDomain 4 319 2 543 2 969
Refused 65 2 19
FormErr 1 0 0
NotImp 1 0 0
ServFail 1 0 0
NotAuth 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 July 16, 2026)

IPv4
IPv6
Country Domains Servers Domains Servers
Czechia 1 215 785 3 231 1 119 480 1 132
United States 435 664 4 199 408 484 3 294
other 286 990 8 633 253 479 5 152
Italy 264 934 228 261 953 53
Sweden 225 235 164 224 163 94
United Kingdom 199 214 322 162 140 120
Slovakia 147 598 336 157 314 76
Germany 135 999 2 193 77 667 909

SLD networks

Location of authoritative DNS servers for second-level domains under .cz – autonomous systems (as of July 16, 2026)

IPv4
IPv6
AS Providers Domains Servers Domains Servers
AS14061 DigitalOcean, LLC 107 854 159 103 734 68
AS16509 Amazon.com, Inc.  296 624 2 277 281 300 2 074
AS208414 WEDOS Internet 276 189 8 276 178 5
AS24806 INTERNET CZ 235 434 133 230 910 40
AS25234 ACTIVE 24 190 274 5 190 274 5
AS29134 Webglobe 144 321 39 143 689 12
AS31034 Aruba 231 486 39 228 830 12
other other 1 258 608 16 646 956 145 8 614

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].