Row

Resolvers

Country analysis – daily QPS averages for queries originating from resolvers in a given country during the last 30 days before October 15, 2026

Country Max qps Min qps Trend Average
USA 11 764 8 681 9 592
other 10 867 7 546 9 291
Germany 11 705 4 518 5 576
Czechia 3 761 2 452 3 109
Netherlands 2 914 2 086 2 424
Brazil 2 524 1 655 2 131
Singapore 2 756 1 711 2 009
India 1 988 763 1 258
China 1 540 745 1 083
France 1 273 841 1 002
Ireland 1 328 765 983
Russia 2 024 702 980
UK 946 784 848
Hong Kong SAR China 1 029 599 720
Italy 873 594 690
Japan 1 484 439 621

Query type analysis – daily QPS averages for queries with a given QTYPE during the last 30 days before October 15, 2026

QTYPE Max qps Min qps Trend Average
A 26 715 20 327 22 732
NS 9 912 6 123 7 718
AAAA 5 283 4 555 4 922
DS 4 917 3 957 4 323
MX 867 487 700
DNSKEY 761 537 595
TXT 483 283 380
other 423 257 304
SOA 421 158 225

Traffic flows – average distribution of QPS since 2026-10-08

Authoritative servers

Server analysis – daily QPS averages for queries reaching an authoritative server in a given city during the last 30 days before October 15, 2026

City Max QPS Min QPS Trend Average
Frankfurt am Main 14 509 7 703 9 143
Praha 7 302 5 441 6 526
Singapore 6 994 4 425 5 418
Reston (VA) 6 942 4 074 4 817
São Paulo 3 433 2 432 2 968
London 3 045 2 533 2 726
Tokyo 3 275 1 987 2 416
Wien 1 762 1 273 1 485
Johannesburg 1 371 1 012 1 151
Seattle (WA) 1 074 672 868
Stockholm 915 670 809
Bratislava 980 660 800
Kyiv 873 0 663
Santiago de Chile 801 497 631
Milano 752 472 602
Sydney 720 284 484
undisclosed 499 369 449
Los Angeles (CA) 644 224 426

Response code analysis – daily QPS averages for queries responded with a given RCODE during the last 30 days before October 15, 2026

RCODE Max QPS Min QPS Trend Average
NoError 45 322 33 968 38 616
NXDomain 9 692 2 521 3 672
Refused 60 2 21
NotImp 327 0 15
FormErr 13 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 October 8, 2026)

IPv4
IPv6
Country Domains Servers Domains Servers
Czechia 1 223 973 3 179 1 137 086 1 120
United States 441 233 4 158 414 364 3 313
other 295 959 8 607 268 981 5 173
Italy 267 389 228 264 449 51
Sweden 225 366 163 224 324 93
United Kingdom 198 149 326 167 459 124
Slovakia 152 408 342 150 498 77
Germany 145 863 2 264 76 799 901

SLD networks

Location of authoritative DNS servers for second-level domains under .cz – autonomous systems (as of October 8, 2026)

IPv4
IPv6
AS Providers Domains Servers Domains Servers
AS14061 DigitalOcean, LLC 109 241 156 105 180 69
AS16509 Amazon.com, Inc.  302 991 2 281 288 197 2 074
AS208414 WEDOS Internet 283 112 11 283 102 9
AS24806 INTERNET CZ 238 094 129 233 738 42
AS25234 ACTIVE 24 190 613 5 190 613 5
AS29134 Webglobe 145 432 43 144 824 12
AS31034 Aruba 234 256 40 231 635 12
other other 1 262 043 16 602 963 417 8 629

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].