Row

Resolvers

Country analysis – daily QPS averages for queries originating from resolvers in a given country during the last 30 days before August 14, 2026

Country Max qps Min qps Trend Average
USA 11 553 8 993 10 140
other 7 598 6 488 7 093
Germany 4 838 4 001 4 339
Czechia 3 478 2 656 3 118
Netherlands 2 508 1 643 2 104
Singapore 2 600 1 761 2 032
Brazil 1 710 1 325 1 536
France 1 288 836 1 058
UK 1 411 855 1 047
Ireland 1 406 639 908
China 1 003 757 858
India 842 674 760
Canada 2 685 426 755
Russia 1 351 542 734
Hong Kong SAR China 828 487 596
Japan 605 433 509

Query type analysis – daily QPS averages for queries with a given QTYPE during the last 30 days before August 14, 2026

QTYPE Max qps Min qps Trend Average
A 22 894 18 373 20 003
NS 7 931 5 916 6 666
AAAA 4 707 4 024 4 342
DS 4 012 3 460 3 738
MX 1 171 612 818
other 729 531 623
DNSKEY 614 496 562
TXT 582 363 463

Traffic flows – average distribution of QPS since 2026-08-07

Authoritative servers

Server analysis – daily QPS averages for queries reaching an authoritative server in a given city during the last 30 days before August 14, 2026

City Max QPS Min QPS Trend Average
Frankfurt am Main 7 410 5 895 6 625
Praha 7 413 5 250 6 319
Reston (VA) 8 015 4 224 5 940
Singapore 4 835 3 731 4 173
London 3 246 2 742 2 921
São Paulo 2 632 2 139 2 365
Tokyo 2 408 1 680 1 915
Seattle (WA) 1 466 1 095 1 293
Johannesburg 1 287 867 1 019
Wien 1 539 737 949
Kyiv 1 095 572 780
Sydney 905 519 680
Bratislava 685 452 599
Stockholm 595 349 472
undisclosed 481 124 435
Santiago de Chile 523 376 432
Milano 457 277 348
Los Angeles (CA) 547 222 323

Response code analysis – daily QPS averages for queries responded with a given RCODE during the last 30 days before August 14, 2026

RCODE Max QPS Min QPS Trend Average
NoError 36 247 31 772 34 162
NXDomain 6 439 2 547 3 415
Refused 66 2 18
ServFail 1 0 0
FormErr 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 August 13, 2026)

IPv4
IPv6
Country Domains Servers Domains Servers
Czechia 1 219 294 3 222 1 123 344 1 125
United States 439 530 4 198 412 154 3 305
other 291 083 8 636 255 812 5 174
Italy 265 725 229 262 755 53
Sweden 224 517 164 223 468 94
United Kingdom 199 905 328 162 705 125
Slovakia 147 884 334 154 585 75
Germany 138 408 2 212 80 120 896

SLD networks

Location of authoritative DNS servers for second-level domains under .cz – autonomous systems (as of August 13, 2026)

IPv4
IPv6
AS Providers Domains Servers Domains Servers
AS14061 DigitalOcean, LLC 108 447 164 104 342 69
AS16509 Amazon.com, Inc.  299 666 2 283 284 028 2 076
AS208414 WEDOS Internet 278 902 11 278 893 9
AS24806 INTERNET CZ 236 254 130 231 762 41
AS25234 ACTIVE 24 189 663 5 189 663 5
AS29134 Webglobe 144 606 40 143 977 12
AS31034 Aruba 232 319 40 229 670 12
other other 1 263 622 16 650 961 971 8 623

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].