Row

Resolvers

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

Country Max qps Min qps Trend Average
USA 10 094 7 385 8 404
other 9 159 5 366 6 705
Germany 4 428 3 306 3 879
Czechia 3 778 2 852 3 394
Singapore 2 440 1 520 1 828
Netherlands 2 044 1 273 1 680
UK 1 204 913 1 079
France 1 823 863 1 062
China 1 253 884 1 046
Ireland 1 423 742 1 041
Brazil 1 349 737 895
India 1 072 567 681
Hong Kong SAR China 1 141 378 625
Japan 1 298 373 591
Russia 901 476 556
Canada 1 012 378 522

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

QTYPE Max qps Min qps Trend Average
A 22 067 16 565 18 786
NS 6 570 4 607 5 263
AAAA 4 043 3 052 3 629
DS 3 425 2 672 3 034
MX 981 549 770
ANY 6 440 17 608
DNSKEY 637 462 519
TXT 723 283 447
SOA 499 173 277
other 339 206 271

Traffic flows – average distribution of QPS since 2026-04-17

Authoritative servers

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

City Max QPS Min QPS Trend Average
Frankfurt am Main 9 405 6 407 7 497
Praha 6 175 4 186 5 015
Reston (VA) 5 179 3 981 4 518
Singapore 4 980 3 036 3 693
London 3 581 2 288 3 264
Tokyo 3 635 1 453 2 245
São Paulo 2 339 1 414 1 674
Seattle (WA) 1 336 873 1 109
Wien 1 446 802 932
Bratislava 951 611 725
Johannesburg 1 189 587 716
Kyiv 900 449 621
undisclosed 656 389 474
Los Angeles (CA) 984 185 363
Milano 402 260 338
Stockholm 409 268 319
Santiago de Chile 631 130 308
Sydney 256 122 175

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

RCODE Max QPS Min QPS Trend Average
NoError 36 602 25 630 29 637
NXDomain 6 899 3 072 4 339
Refused 63 2 18
ServFail 11 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 April 9, 2026)

IPv4
IPv6
Country Domains Servers Domains Servers
Czechia 1 212 157 3 275 1 112 769 1 133
United States 431 868 4 256 400 452 3 306
other 278 528 8 691 216 533 5 127
Italy 262 958 240 259 931 51
Sweden 225 002 164 223 915 91
United Kingdom 191 301 330 161 423 123
Slovakia 147 356 335 167 556 64
Germany 135 725 2 211 76 860 928

SLD networks

Location of authoritative DNS servers for second-level domains under .cz – autonomous systems (as of April 9, 2026)

IPv4
IPv6
AS Providers Domains Servers Domains Servers
AS14061 DigitalOcean, LLC 106 841 167 102 650 68
AS16509 Amazon.com, Inc.  294 627 2 288 277 184 2 082
AS208414 WEDOS Internet 272 171 7 272 165 5
AS24806 INTERNET CZ 233 328 136 228 777 41
AS25234 ACTIVE 24 189 764 6 189 764 6
AS29134 Webglobe 144 563 45 143 800 12
AS31034 Aruba 229 330 39 226 656 9
other other 1 246 679 16 814 932 526 8 600

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].