Row

Resolvers

Country analysis – daily QPS averages for queries originating from resolvers in a given country during the last 30 days before July 3, 2026

Country Max qps Min qps Trend Average
USA 9 305 8 163 8 810
other 7 454 5 937 6 566
Germany 5 161 3 683 4 150
Czechia 6 529 2 709 3 338
Singapore 2 177 1 660 1 931
Netherlands 2 443 1 453 1 855
France 1 491 1 037 1 231
Ireland 1 475 909 1 145
Brazil 1 494 883 1 074
UK 1 303 942 1 068
Japan 1 446 391 914
India 997 613 774
Hong Kong SAR China 1 147 412 765
China 885 618 731
Russia 1 307 500 705
Canada 949 368 535

Query type analysis – daily QPS averages for queries with a given QTYPE during the last 30 days before July 3, 2026

QTYPE Max qps Min qps Trend Average
A 23 108 16 878 19 282
NS 6 634 5 331 5 934
AAAA 4 562 3 653 4 055
DS 3 757 3 083 3 343
MX 990 618 830
DNSKEY 613 504 552
TXT 607 388 500
other 513 340 397
SOA 419 281 324

Traffic flows – average distribution of QPS since 2026-06-26

Authoritative servers

Server analysis – daily QPS averages for queries reaching an authoritative server in a given city during the last 30 days before July 3, 2026

City Max QPS Min QPS Trend Average
Frankfurt am Main 8 372 6 846 7 424
Praha 8 461 4 454 5 394
Reston (VA) 5 439 4 189 4 621
Singapore 4 742 3 264 3 976
London 3 656 3 040 3 359
Tokyo 3 516 1 468 2 435
São Paulo 2 483 1 659 1 872
Seattle (WA) 1 585 959 1 208
Wien 1 319 739 957
Bratislava 827 595 730
Johannesburg 1 195 542 713
Sydney 857 161 578
Kyiv 711 393 564
undisclosed 514 380 470
Milano 526 361 416
Santiago de Chile 495 221 296
Los Angeles (CA) 543 180 293
Stockholm 340 248 287

Response code analysis – daily QPS averages for queries responded with a given RCODE during the last 30 days before July 3, 2026

RCODE Max QPS Min QPS Trend Average
NoError 34 134 28 282 31 136
NXDomain 7 157 2 612 4 446
Refused 65 2 18
NotImp 2 0 1
FormErr 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 2, 2026)

IPv4
IPv6
Country Domains Servers Domains Servers
Czechia 1 215 258 3 244 1 118 755 1 127
United States 434 707 4 212 407 539 3 283
other 287 709 8 638 247 991 5 152
Italy 264 701 228 261 706 53
Sweden 225 114 170 224 034 95
United Kingdom 198 944 323 161 907 121
Slovakia 147 393 336 158 786 76
Germany 136 170 2 196 77 776 925

SLD networks

Location of authoritative DNS servers for second-level domains under .cz – autonomous systems (as of July 2, 2026)

IPv4
IPv6
AS Providers Domains Servers Domains Servers
AS14061 DigitalOcean, LLC 107 560 157 103 428 68
AS16509 Amazon.com, Inc.  296 427 2 287 280 833 2 076
AS208414 WEDOS Internet 275 738 8 275 729 5
AS24806 INTERNET CZ 235 186 135 230 643 40
AS25234 ACTIVE 24 190 087 5 190 087 5
AS29134 Webglobe 144 149 39 143 514 12
AS31034 Aruba 231 202 39 228 547 12
other other 1 254 862 16 677 954 136 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].